10-K Filing

LGL GROUP INC CIK: 61004 FY 2023

Filing Information

Form Type	10-K
Accession Number	`0001437749-24-010393`
Period End Date	20231231
Filing Date	20240401
Fiscal Year	2023
Fiscal Period	FY
XBRL Instance	lglg20231231_10k_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 136 Income Statement 424 Cash Flow Statement 132 Stockholders Equity 52

Balance Sheet 136 line items

Line Item	Tag	Value	Unit	Period
Accounts Receivable, Allowance for Credit Loss, Current	`AllowanceForDoubtfulAccountsReceivableCurrent`	$86.00K	USD	Point-in-time
Accounts Receivable, Allowance for Credit Loss, Current	`AllowanceForDoubtfulAccountsReceivableCurrent`	$86.00K	USD	Point-in-time
Accounts Receivable, Allowance for Credit Loss, Current	`AllowanceForDoubtfulAccountsReceivableCurrent`	$58.00K	USD	Point-in-time
Accounts Receivable, Allowance for Credit Loss, Current	`AllowanceForDoubtfulAccountsReceivableCurrent`	$58.00K	USD	Point-in-time
Common Stock, Par or Stated Value Per Share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common Stock, Par or Stated Value Per Share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common Stock, Par or Stated Value Per Share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common Stock, Par or Stated Value Per Share (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$40.71M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$40.71M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$21.51M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$21.51M	USD	Point-in-time
Marketable securities	`MarketableSecuritiesCurrent`	$16.59M	USD	Point-in-time
Marketable securities	`MarketableSecuritiesCurrent`	$16.59M	USD	Point-in-time
Common Stock, Shares Authorized (in shares)	`CommonStockSharesAuthorized`	30.00M	shares	Point-in-time
Common Stock, Shares Authorized (in shares)	`CommonStockSharesAuthorized`	30.00M	shares	Point-in-time
Marketable securities	`MarketableSecuritiesCurrent`	$22.00K	USD	Point-in-time
Marketable securities	`MarketableSecuritiesCurrent`	$22.00K	USD	Point-in-time
Common Stock, Shares Authorized (in shares)	`CommonStockSharesAuthorized`	30.00M	shares	Point-in-time
Common Stock, Shares Authorized (in shares)	`CommonStockSharesAuthorized`	30.00M	shares	Point-in-time
Common Stock, Shares Authorized (in shares)	`CommonStockSharesAuthorized`	30.00M	shares	Point-in-time
Common Stock, Shares Authorized (in shares)	`CommonStockSharesAuthorized`	30.00M	shares	Point-in-time
Common Stock, Shares, Issued (in shares)	`CommonStockSharesIssued`	5.43M	shares	Point-in-time
Common Stock, Shares, Issued (in shares)	`CommonStockSharesIssued`	5.43M	shares	Point-in-time
Accounts receivable, net of allowance of $58 and $86, respectively	`AccountsReceivableNetCurrent`	$356.00K	USD	Point-in-time
Accounts receivable, net of allowance of $58 and $86, respectively	`AccountsReceivableNetCurrent`	$356.00K	USD	Point-in-time
Accounts receivable, net of allowance of $58 and $86, respectively	`AccountsReceivableNetCurrent`	$543.00K	USD	Point-in-time
Accounts receivable, net of allowance of $58 and $86, respectively	`AccountsReceivableNetCurrent`	$543.00K	USD	Point-in-time
Common Stock, Shares, Issued (in shares)	`CommonStockSharesIssued`	5.45M	shares	Point-in-time
Common Stock, Shares, Issued (in shares)	`CommonStockSharesIssued`	5.45M	shares	Point-in-time
Common Stock, Shares, Outstanding (in shares)	`CommonStockSharesOutstanding`	5.35M	shares	Point-in-time
Common Stock, Shares, Outstanding (in shares)	`CommonStockSharesOutstanding`	5.35M	shares	Point-in-time
Inventories, net	`InventoryNet`	$204.00K	USD	Point-in-time
Inventories, net	`InventoryNet`	$204.00K	USD	Point-in-time
Common Stock, Shares, Outstanding (in shares)	`CommonStockSharesOutstanding`	5.37M	shares	Point-in-time
Common Stock, Shares, Outstanding (in shares)	`CommonStockSharesOutstanding`	5.37M	shares	Point-in-time
Inventories, net	`InventoryNet`	$265.00K	USD	Point-in-time
Inventories, net	`InventoryNet`	$265.00K	USD	Point-in-time
Treasury Stock, Common, Shares (in shares)	`TreasuryStockCommonShares`	81,584.00	shares	Point-in-time
Treasury Stock, Common, Shares (in shares)	`TreasuryStockCommonShares`	81,584.00	shares	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$440.00K	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$440.00K	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$273.00K	USD	Point-in-time
Prepaid expenses and other current assets	`PrepaidExpenseAndOtherAssetsCurrent`	$273.00K	USD	Point-in-time
Treasury Stock, Common, Shares (in shares)	`TreasuryStockCommonShares`	81,584.00	shares	Point-in-time
Treasury Stock, Common, Shares (in shares)	`TreasuryStockCommonShares`	81,584.00	shares	Point-in-time
Total current assets	`AssetsCurrent`	$41.57M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$41.57M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$39.34M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$39.34M	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$1.00K	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$1.00K	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	-	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	-	USD	Point-in-time
Right-of-use lease asset	`OperatingLeaseRightOfUseAsset`	$75.00K	USD	Point-in-time
Right-of-use lease asset	`OperatingLeaseRightOfUseAsset`	$75.00K	USD	Point-in-time
Right-of-use lease asset	`OperatingLeaseRightOfUseAsset`	$132.00K	USD	Point-in-time
Right-of-use lease asset	`OperatingLeaseRightOfUseAsset`	$132.00K	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetIncludingGoodwill`	$57.00K	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetIncludingGoodwill`	$57.00K	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetIncludingGoodwill`	$78.00K	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetIncludingGoodwill`	$78.00K	USD	Point-in-time
Deferred income tax asset, net	`DeferredIncomeTaxAssetsNet`	$152.00K	USD	Point-in-time
Deferred income tax asset, net	`DeferredIncomeTaxAssetsNet`	$152.00K	USD	Point-in-time
Deferred income tax asset, net	`DeferredIncomeTaxAssetsNet`	$234.00K	USD	Point-in-time
Deferred income tax asset, net	`DeferredIncomeTaxAssetsNet`	$234.00K	USD	Point-in-time
Total assets	`Assets`	$39.78M	USD	Point-in-time
Total assets	`Assets`	$39.78M	USD	Point-in-time
Total assets	`Assets`	$41.85M	USD	Point-in-time
Total assets	`Assets`	$41.85M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$310.00K	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$310.00K	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$93.00K	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$93.00K	USD	Point-in-time
Accrued compensation and commissions expense	`EmployeeRelatedLiabilitiesCurrent`	$264.00K	USD	Point-in-time
Accrued compensation and commissions expense	`EmployeeRelatedLiabilitiesCurrent`	$264.00K	USD	Point-in-time
Accrued compensation and commissions expense	`EmployeeRelatedLiabilitiesCurrent`	$170.00K	USD	Point-in-time
Accrued compensation and commissions expense	`EmployeeRelatedLiabilitiesCurrent`	$170.00K	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$1.00K	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$1.00K	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$41.00K	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$41.00K	USD	Point-in-time
Other accrued expenses and liabilities	`OtherAccruedLiabilitiesCurrent`	$76.00K	USD	Point-in-time
Other accrued expenses and liabilities	`OtherAccruedLiabilitiesCurrent`	$76.00K	USD	Point-in-time
Other accrued expenses and liabilities	`OtherAccruedLiabilitiesCurrent`	$106.00K	USD	Point-in-time
Other accrued expenses and liabilities	`OtherAccruedLiabilitiesCurrent`	$106.00K	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$474.00K	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$474.00K	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$587.00K	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$587.00K	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$708.00K	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$708.00K	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$694.00K	USD	Point-in-time
Other liabilities	`OtherLiabilitiesNoncurrent`	$694.00K	USD	Point-in-time
Total liabilities	`Liabilities`	$1.17M	USD	Point-in-time
Total liabilities	`Liabilities`	$1.17M	USD	Point-in-time
Total liabilities	`Liabilities`	$1.29M	USD	Point-in-time
Total liabilities	`Liabilities`	$1.29M	USD	Point-in-time
Contingencies (Note 14)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies (Note 14)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies (Note 14)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Contingencies (Note 14)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock ($0.01 par value; 30,000,000 shares authorized; 5,454,639 and 5,434,521 shares issued as of 2023 and 2022, respectively; 5,373,055 and 5,352,937 shares outstanding as of 2023 and 2022, respectively)	`CommonStockValue`	$53.00K	USD	Point-in-time
Common stock ($0.01 par value; 30,000,000 shares authorized; 5,454,639 and 5,434,521 shares issued as of 2023 and 2022, respectively; 5,373,055 and 5,352,937 shares outstanding as of 2023 and 2022, respectively)	`CommonStockValue`	$53.00K	USD	Point-in-time
Common stock ($0.01 par value; 30,000,000 shares authorized; 5,454,639 and 5,434,521 shares issued as of 2023 and 2022, respectively; 5,373,055 and 5,352,937 shares outstanding as of 2023 and 2022, respectively)	`CommonStockValue`	$53.00K	USD	Point-in-time
Common stock ($0.01 par value; 30,000,000 shares authorized; 5,454,639 and 5,434,521 shares issued as of 2023 and 2022, respectively; 5,373,055 and 5,352,937 shares outstanding as of 2023 and 2022, respectively)	`CommonStockValue`	$53.00K	USD	Point-in-time
Treasury stock, at cost (81,584 shares as of 2023 and 2022, respectively)	`TreasuryStockCommonValue`	$580.00K	USD	Point-in-time
Treasury stock, at cost (81,584 shares as of 2023 and 2022, respectively)	`TreasuryStockCommonValue`	$580.00K	USD	Point-in-time
Treasury stock, at cost (81,584 shares as of 2023 and 2022, respectively)	`TreasuryStockCommonValue`	$580.00K	USD	Point-in-time
Treasury stock, at cost (81,584 shares as of 2023 and 2022, respectively)	`TreasuryStockCommonValue`	$580.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$46.35M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$46.35M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$46.35M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$46.35M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-7.06M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-7.06M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-7.33M	USD	Point-in-time
Accumulated deficit	`RetainedEarningsAccumulatedDeficit`	$-7.33M	USD	Point-in-time
Total LGL Group stockholders' equity	`StockholdersEquity`	$38.76M	USD	Point-in-time
Total LGL Group stockholders' equity	`StockholdersEquity`	$38.76M	USD	Point-in-time
Total LGL Group stockholders' equity	`StockholdersEquity`	$38.49M	USD	Point-in-time
Total LGL Group stockholders' equity	`StockholdersEquity`	$38.49M	USD	Point-in-time
Non-controlling interests	`MinorityInterest`	$1.92M	USD	Point-in-time
Non-controlling interests	`MinorityInterest`	$1.92M	USD	Point-in-time
Non-controlling interests	`MinorityInterest`	-	USD	Point-in-time
Non-controlling interests	`MinorityInterest`	-	USD	Point-in-time
Total stockholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$38.49M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$38.49M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$40.68M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$40.68M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$54.74M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$54.74M	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$39.78M	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$39.78M	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$41.85M	USD	Point-in-time
Total liabilities and stockholders' equity	`LiabilitiesAndStockholdersEquity`	$41.85M	USD	Point-in-time

Income Statement 424 line items

Line Item	Tag	Value	Unit	Period
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$370.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$370.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$441.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$441.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$417.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$417.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.73M	USD	Annual
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.73M	USD	Annual
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$524.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$524.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.66M	USD	Annual
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$1.66M	USD	Annual
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$403.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$403.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$438.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$438.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$446.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$446.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$344.00K	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerExcludingAssessedTax`	$344.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$549.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$549.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$198.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$198.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$413.00K	USD	Annual
Net investment income	`InterestIncomeExpenseNet`	$413.00K	USD	Annual
Net investment income	`InterestIncomeExpenseNet`	$-3.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$-3.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$10.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$10.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$544.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$544.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$54.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$54.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$352.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$352.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$275.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$275.00K	USD	1 Quarter
Net investment income	`InterestIncomeExpenseNet`	$1.57M	USD	Annual
Net investment income	`InterestIncomeExpenseNet`	$1.57M	USD	Annual
Net gains (losses)	`GainLossOnInvestments`	$43.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$43.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-2.12M	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-2.12M	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$45.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$45.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-2.37M	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-2.37M	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-4.75M	USD	Annual
Net gains (losses)	`GainLossOnInvestments`	$-4.75M	USD	Annual
Net gains (losses)	`GainLossOnInvestments`	-	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	-	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-4.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-4.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-298.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$-298.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$384.00K	USD	Annual
Net gains (losses)	`GainLossOnInvestments`	$384.00K	USD	Annual
Net gains (losses)	`GainLossOnInvestments`	$345.00K	USD	1 Quarter
Net gains (losses)	`GainLossOnInvestments`	$345.00K	USD	1 Quarter
Total revenues	`Revenues`	$3.68M	USD	Annual
Total revenues	`Revenues`	$3.68M	USD	Annual
Total revenues	`Revenues`	$-2.68M	USD	Annual
Total revenues	`Revenues`	$-2.68M	USD	Annual
Total revenues	`Revenues`	$578.00K	USD	1 Quarter
Total revenues	`Revenues`	$578.00K	USD	1 Quarter
Total revenues	`Revenues`	$721.00K	USD	1 Quarter
Total revenues	`Revenues`	$721.00K	USD	1 Quarter
Total revenues	`Revenues`	$995.00K	USD	1 Quarter
Total revenues	`Revenues`	$995.00K	USD	1 Quarter
Total revenues	`Revenues`	$978.00K	USD	1 Quarter
Total revenues	`Revenues`	$978.00K	USD	1 Quarter
Total revenues	`Revenues`	$459.00K	USD	1 Quarter
Total revenues	`Revenues`	$459.00K	USD	1 Quarter
Total revenues	`Revenues`	$-1.72M	USD	1 Quarter
Total revenues	`Revenues`	$-1.72M	USD	1 Quarter
Total revenues	`Revenues`	$-1.99M	USD	1 Quarter
Total revenues	`Revenues`	$-1.99M	USD	1 Quarter
Total revenues	`Revenues`	$984.00K	USD	1 Quarter
Total revenues	`Revenues`	$984.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$227.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$227.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$796.00K	USD	Annual
Manufacturing cost of sales	`ManufacturingCosts`	$796.00K	USD	Annual
Manufacturing cost of sales	`ManufacturingCosts`	$837.00K	USD	Annual
Manufacturing cost of sales	`ManufacturingCosts`	$837.00K	USD	Annual
Manufacturing cost of sales	`ManufacturingCosts`	$195.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$195.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$165.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$165.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$208.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$208.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$242.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$242.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$203.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$203.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$192.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$192.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$201.00K	USD	1 Quarter
Manufacturing cost of sales	`ManufacturingCosts`	$201.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$465.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$465.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$669.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$669.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$2.24M	USD	Annual
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$2.24M	USD	Annual
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$623.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$623.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$2.89M	USD	Annual
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$2.89M	USD	Annual
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$1.02M	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$1.02M	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$645.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$645.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$576.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$576.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$584.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$584.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$542.00K	USD	1 Quarter
Engineering, selling and administrative	`EngineeringSellingAndAdministrative`	$542.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$666.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$666.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$3.73M	USD	Annual
Total expenses	`CostsAndExpenses`	$3.73M	USD	Annual
Total expenses	`CostsAndExpenses`	$872.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$872.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$734.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$734.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$3.03M	USD	Annual
Total expenses	`CostsAndExpenses`	$3.03M	USD	Annual
Total expenses	`CostsAndExpenses`	$1.26M	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$1.26M	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$741.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$741.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$779.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$779.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$850.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$850.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$853.00K	USD	1 Quarter
Total expenses	`CostsAndExpenses`	$853.00K	USD	1 Quarter
Income (loss) from continuing operations before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$646.00K	USD	Annual
Income (loss) from continuing operations before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$646.00K	USD	Annual
Income (loss) from continuing operations before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-6.41M	USD	Annual
Income (loss) from continuing operations before income tax expense	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-6.41M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-1.53M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-1.53M	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-164.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-164.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$65.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$65.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-588.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-588.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-611.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-611.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-166.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-166.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-2.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$-2.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$69.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$69.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$301.00K	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$301.00K	USD	Annual
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$169.00K	USD	1 Quarter
Income tax expense (benefit)	`IncomeTaxExpenseBenefit`	$169.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$1.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$1.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-1.98M	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-1.98M	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-2.25M	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-2.25M	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$160.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$160.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$185.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$185.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-639.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-639.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-4.88M	USD	Annual
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-4.88M	USD	Annual
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$130.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$130.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$345.00K	USD	Annual
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$345.00K	USD	Annual
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-130.00K	USD	1 Quarter
Net income (loss) from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-130.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$132.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$132.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$457.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$457.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-28.00K	USD	Annual
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-28.00K	USD	Annual
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-28.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$-28.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$1.89M	USD	Annual
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$1.89M	USD	Annual
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$808.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$808.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	-	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$488.00K	USD	1 Quarter
(Loss) income from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$488.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-130.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-130.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$130.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$130.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$169.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$169.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-2.99M	USD	Annual
Net income (loss)	`ProfitLoss`	$-2.99M	USD	Annual
Net income (loss)	`ProfitLoss`	$-1.80M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-1.80M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$317.00K	USD	Annual
Net income (loss)	`ProfitLoss`	$317.00K	USD	Annual
Net income (loss)	`ProfitLoss`	$160.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$160.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-1.50M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-1.50M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$133.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$133.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$157.00K	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$157.00K	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$26.00K	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$26.00K	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$48.00K	USD	Annual
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$48.00K	USD	Annual
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$22.00K	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$22.00K	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	1 Quarter
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Less: Net income attributable to non-controlling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$133.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$133.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$-2.99M	USD	Annual
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$-2.99M	USD	Annual
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$134.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$134.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$-1.80M	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$-1.80M	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$157.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$157.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$108.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$108.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$-1.50M	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$-1.50M	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$169.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$169.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$-130.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$-130.00K	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$269.00K	USD	Annual
Net income (loss) attributable to LGL Group common stockholders	`NetIncomeLoss`	$269.00K	USD	Annual
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.03	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.03	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.42	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.42	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.91	USD	Annual
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.91	USD	Annual
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.03	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.03	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.06	USD	Annual
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.06	USD	Annual
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	-	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	-	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.37	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.37	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.12	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.12	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.01	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.01	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.09	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.09	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.09	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.09	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.35	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.35	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.15	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.15	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.01	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.01	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.02	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$-0.56	USD	Annual
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$-0.56	USD	Annual
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$-0.28	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$-0.28	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.05	USD	Annual
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.05	USD	Annual
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$-0.34	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$-0.34	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$-0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$-0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareBasic`	$0.03	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.42	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.42	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.03	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.03	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	-	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	-	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.02	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.37	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.37	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.06	USD	Annual
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.06	USD	Annual
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.12	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.12	USD	1 Quarter
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.91	USD	Annual
Income (loss) from continuing operations (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.91	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.09	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.09	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.01	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.01	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.35	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.35	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.01	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.01	USD	Annual
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.02	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.02	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.15	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.15	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.09	USD	1 Quarter
(Loss) income from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.09	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$-0.28	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$-0.28	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$-0.56	USD	Annual
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$-0.56	USD	Annual
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.05	USD	Annual
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.05	USD	Annual
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.03	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$-0.34	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$-0.34	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$-0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$-0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.02	USD	1 Quarter
Net income (loss) attributable to LGL Group common stockholders (in dollars per share)	`EarningsPerShareDiluted`	$0.02	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.34M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.34M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.33M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.33M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.35M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.32M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	5.32M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.36M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.36M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.36M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.36M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.38M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.38M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.33M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.33M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.38M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.38M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	5.35M	shares	1 Quarter

Cash Flow Statement 132 line items

Line Item	Tag	Value	Unit	Period
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-130.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-130.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$130.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$130.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$169.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$169.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-2.99M	USD	Annual
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-2.99M	USD	Annual
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-1.80M	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-1.80M	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$317.00K	USD	Annual
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$317.00K	USD	Annual
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$160.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$160.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-1.50M	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-1.50M	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$133.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$133.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$157.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$157.00K	USD	1 Quarter
Depreciation	`Depreciation`	$496.00K	USD	Annual
Depreciation	`Depreciation`	$496.00K	USD	Annual
Depreciation	`Depreciation`	$1.00K	USD	Annual
Depreciation	`Depreciation`	$1.00K	USD	Annual
Amortization of finite-lived intangible assets	`AmortizationOfIntangibleAssets`	$21.00K	USD	Annual
Amortization of finite-lived intangible assets	`AmortizationOfIntangibleAssets`	$21.00K	USD	Annual
Amortization of finite-lived intangible assets	`AmortizationOfIntangibleAssets`	$62.00K	USD	Annual
Amortization of finite-lived intangible assets	`AmortizationOfIntangibleAssets`	$62.00K	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$388.00K	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$388.00K	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$3.00K	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$3.00K	USD	Annual
Realized loss on sale of marketable securities	`MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments`	$-22.87M	USD	Annual
Realized loss on sale of marketable securities	`MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments`	$-22.87M	USD	Annual
Realized loss on sale of marketable securities	`MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments`	$-4.32M	USD	Annual
Realized loss on sale of marketable securities	`MarketableSecuritiesRealizedGainLossExcludingOtherThanTemporaryImpairments`	$-4.32M	USD	Annual
Unrealized gain on marketable securities	`MarketableSecuritiesUnrealizedGainLoss`	$4.70M	USD	Annual
Unrealized gain on marketable securities	`MarketableSecuritiesUnrealizedGainLoss`	$4.70M	USD	Annual
Unrealized gain on marketable securities	`MarketableSecuritiesUnrealizedGainLoss`	$18.12M	USD	Annual
Unrealized gain on marketable securities	`MarketableSecuritiesUnrealizedGainLoss`	$18.12M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$-1.52M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$-1.52M	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$82.00K	USD	Annual
Deferred income tax expense (benefit)	`DeferredIncomeTaxExpenseBenefit`	$82.00K	USD	Annual
Decrease (increase) in accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$613.00K	USD	Annual
Decrease (increase) in accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$613.00K	USD	Annual
Decrease (increase) in accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$-187.00K	USD	Annual
Decrease (increase) in accounts receivable, net	`IncreaseDecreaseInAccountsReceivable`	$-187.00K	USD	Annual
Decrease (increase) in inventories, net	`IncreaseDecreaseInInventories`	$-61.00K	USD	Annual
Decrease (increase) in inventories, net	`IncreaseDecreaseInInventories`	$-61.00K	USD	Annual
Decrease (increase) in inventories, net	`IncreaseDecreaseInInventories`	$2.33M	USD	Annual
Decrease (increase) in inventories, net	`IncreaseDecreaseInInventories`	$2.33M	USD	Annual
Decrease (increase) in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$135.00K	USD	Annual
Decrease (increase) in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$135.00K	USD	Annual
Decrease (increase) in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-167.00K	USD	Annual
Decrease (increase) in prepaid expenses and other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-167.00K	USD	Annual
Decrease in income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$40.00K	USD	Annual
Decrease in income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$40.00K	USD	Annual
Decrease in income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-476.00K	USD	Annual
Decrease in income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-476.00K	USD	Annual
(Decrease) increase in accounts payable, accrued compensation and commissions expense and other	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-110.00K	USD	Annual
(Decrease) increase in accounts payable, accrued compensation and commissions expense and other	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-110.00K	USD	Annual
(Decrease) increase in accounts payable, accrued compensation and commissions expense and other	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$1.55M	USD	Annual
(Decrease) increase in accounts payable, accrued compensation and commissions expense and other	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$1.55M	USD	Annual
Total adjustments	`AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities`	$68.00K	USD	Annual
Total adjustments	`AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities`	$68.00K	USD	Annual
Total adjustments	`AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities`	$2.17M	USD	Annual
Total adjustments	`AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities`	$2.17M	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$385.00K	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$385.00K	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-817.00K	USD	Annual
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivities`	$-817.00K	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	-	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	-	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$662.00K	USD	Annual
Capital expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$662.00K	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleAndMaturityOfMarketableSecurities`	$16.95M	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleAndMaturityOfMarketableSecurities`	$16.95M	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleAndMaturityOfMarketableSecurities`	$2.06M	USD	Annual
Proceeds from sale of marketable securities	`ProceedsFromSaleAndMaturityOfMarketableSecurities`	$2.06M	USD	Annual
Purchase of marketable securities	`PaymentsToAcquireMarketableSecurities`	$7.23M	USD	Annual
Purchase of marketable securities	`PaymentsToAcquireMarketableSecurities`	$7.23M	USD	Annual
Purchase of marketable securities	`PaymentsToAcquireMarketableSecurities`	-	USD	Annual
Purchase of marketable securities	`PaymentsToAcquireMarketableSecurities`	-	USD	Annual
Consolidation of noncontrolling interests	`ProceedsFromConsolidationOfNoncontrollingInterest`	$1.87M	USD	Annual
Consolidation of noncontrolling interests	`ProceedsFromConsolidationOfNoncontrollingInterest`	$1.87M	USD	Annual
Consolidation of noncontrolling interests	`ProceedsFromConsolidationOfNoncontrollingInterest`	-	USD	Annual
Consolidation of noncontrolling interests	`ProceedsFromConsolidationOfNoncontrollingInterest`	-	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$18.82M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$18.82M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-5.83M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-5.83M	USD	Annual
Transfer to M-tron Industries, Inc. related to Separation	`SpinOffTransfer`	-	USD	Annual
Transfer to M-tron Industries, Inc. related to Separation	`SpinOffTransfer`	-	USD	Annual
Transfer to M-tron Industries, Inc. related to Separation	`SpinOffTransfer`	$1.00M	USD	Annual
Transfer to M-tron Industries, Inc. related to Separation	`SpinOffTransfer`	$1.00M	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	$191.00K	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	$191.00K	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	-	USD	Annual
Exercise of stock options	`ProceedsFromStockOptionsExercised`	-	USD	Annual
Payment for taxes related to net share settlement of equity awards	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	-	USD	Annual
Payment for taxes related to net share settlement of equity awards	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	-	USD	Annual
Payment for taxes related to net share settlement of equity awards	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$50.00K	USD	Annual
Payment for taxes related to net share settlement of equity awards	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$50.00K	USD	Annual
Net cash (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-859.00K	USD	Annual
Net cash (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-859.00K	USD	Annual
Net cash (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	-	USD	Annual
Net cash (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	-	USD	Annual
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$19.20M	USD	Annual
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$19.20M	USD	Annual
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-7.51M	USD	Annual
Increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-7.51M	USD	Annual
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$40.71M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$40.71M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$29.02M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$29.02M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$21.51M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$21.51M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$40.71M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$40.71M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$29.02M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$29.02M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$21.51M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$21.51M	USD	Point-in-time
Distribution of M-tron Industries, Inc. related to Separation	`NonCashDistributionOfIronNetSecuritiesBySponsor`	-	USD	Annual
Distribution of M-tron Industries, Inc. related to Separation	`NonCashDistributionOfIronNetSecuritiesBySponsor`	-	USD	Annual
Distribution of M-tron Industries, Inc. related to Separation	`NonCashDistributionOfIronNetSecuritiesBySponsor`	$12.79M	USD	Annual
Distribution of M-tron Industries, Inc. related to Separation	`NonCashDistributionOfIronNetSecuritiesBySponsor`	$12.79M	USD	Annual
Income taxes paid	`IncomeTaxesPaid`	$207.00K	USD	Annual
Income taxes paid	`IncomeTaxesPaid`	$207.00K	USD	Annual
Income taxes paid	`IncomeTaxesPaid`	$741.00K	USD	Annual
Income taxes paid	`IncomeTaxesPaid`	$741.00K	USD	Annual

Stockholders Equity 52 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$38.49M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$38.49M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$40.68M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$40.68M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$54.74M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$54.74M	USD	Point-in-time
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-130.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-130.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$130.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$130.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$169.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$169.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-2.99M	USD	Annual
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-2.99M	USD	Annual
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-1.80M	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-1.80M	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$317.00K	USD	Annual
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$317.00K	USD	Annual
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$160.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$160.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-1.50M	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$-1.50M	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$133.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$133.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$157.00K	USD	1 Quarter
Net loss attributable to LGL Group or non-controlling interests	`ProfitLoss`	$157.00K	USD	1 Quarter
Consolidation of non-controlling interests	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$1.87M	USD	Annual
Consolidation of non-controlling interests	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	$1.87M	USD	Annual
Consolidation of non-controlling interests	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	-	USD	Annual
Consolidation of non-controlling interests	`NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance`	-	USD	Annual
MtronPTI Spin-off	`StockholdersEquityNoteSpinoffTransaction`	$-13.79M	USD	Annual
MtronPTI Spin-off	`StockholdersEquityNoteSpinoffTransaction`	$-13.79M	USD	Annual
MtronPTI Spin-off	`StockholdersEquityNoteSpinoffTransaction`	-	USD	Annual
MtronPTI Spin-off	`StockholdersEquityNoteSpinoffTransaction`	-	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$191.00K	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$191.00K	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	-	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	-	USD	Annual
Repurchase of shares exercised	`TreasuryStockValueAcquiredCostMethod`	-	USD	Annual
Repurchase of shares exercised	`TreasuryStockValueAcquiredCostMethod`	-	USD	Annual
Repurchase of shares exercised	`TreasuryStockValueAcquiredCostMethod`	$50.00K	USD	Annual
Repurchase of shares exercised	`TreasuryStockValueAcquiredCostMethod`	$50.00K	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$388.00K	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$388.00K	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.00K	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.00K	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$38.49M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$38.49M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$40.68M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$40.68M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$54.74M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$54.74M	USD	Point-in-time

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.