10-Q Filing

SEACOR MARINE HOLDINGS INC. CIK: 1690334 Q3 2021

Filing Information

Form Type	10-Q
Accession Number	`0001564590-21-054554`
Period End Date	20210930
Filing Date	20211104
Fiscal Year	2021
Fiscal Period	Q3
XBRL Instance	smhi-10q_20210930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 118 Income Statement 122 Cash Flow Statement 107 Stockholders Equity 40 Comprehensive Income 31

Balance Sheet 118 line items

Line Item	Tag	Value	Unit	Period
Trade receivables, allowance for credit loss	`AllowanceForDoubtfulAccountsReceivableCurrent`	$582.00K	USD	Point-in-time
Trade receivables, allowance for credit loss	`AllowanceForDoubtfulAccountsReceivableCurrent`	$724.00K	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$42.19M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$32.67M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	24.50M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	23.50M	shares	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$3.35M	USD	Point-in-time
Restricted cash	`RestrictedCashAndCashEquivalents`	$4.16M	USD	Point-in-time
Shares held in treasury (in shares)	`TreasuryStockShares`	127,738.00	shares	Point-in-time
Shares held in treasury (in shares)	`TreasuryStockShares`	73,284.00	shares	Point-in-time
Trade, net of allowance for credit loss accounts of $724 and $582 in 2021 and 2020, respectively	`AccountsReceivableNetCurrent`	$45.33M	USD	Point-in-time
Trade, net of allowance for credit loss accounts of $724 and $582 in 2021 and 2020, respectively	`AccountsReceivableNetCurrent`	$50.34M	USD	Point-in-time
Other	`OtherReceivablesNetCurrent`	$13.75M	USD	Point-in-time
Other	`OtherReceivablesNetCurrent`	$10.92M	USD	Point-in-time
Receivable from SEACOR Holdings	`DueFromAffiliateCurrent`	$18.83M	USD	Point-in-time
Tax Receivable	`IncomeTaxesReceivable`	$101.00K	USD	Point-in-time
Tax Receivable	`IncomeTaxesReceivable`	$13.56M	USD	Point-in-time
Inventories	`InventoryNet`	$476.00K	USD	Point-in-time
Inventories	`InventoryNet`	$576.00K	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$3.23M	USD	Point-in-time
Prepaid expenses and other	`PrepaidExpenseAndOtherAssetsCurrent`	$3.85M	USD	Point-in-time
Assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$50.23M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$178.70M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$114.88M	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$989.91M	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$1.01B	USD	Point-in-time
Historical cost	`PropertyPlantAndEquipmentGross`	$996.37M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$303.18M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$280.47M	USD	Point-in-time
Accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$291.54M	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentExcludingConstructionInProgress`	$721.34M	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentExcludingConstructionInProgress`	$686.73M	USD	Point-in-time
Property and equipment	`PropertyPlantAndEquipmentExcludingConstructionInProgress`	$715.90M	USD	Point-in-time
Construction in progress	`ConstructionInProgressGross`	$15.58M	USD	Point-in-time
Construction in progress	`ConstructionInProgressGross`	$32.33M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$753.66M	USD	Point-in-time
Net property and equipment	`PropertyPlantAndEquipmentNet`	$702.31M	USD	Point-in-time
Right-of-Use Asset - Operating Leases	`OperatingLeaseRightOfUseAsset`	$4.67M	USD	Point-in-time
Right-of-Use Asset - Operating Leases	`OperatingLeaseRightOfUseAsset`	$7.13M	USD	Point-in-time
Right-of-Use Asset - Finance Leases	`FinanceLeaseRightOfUseAsset`	$108.00K	USD	Point-in-time
Right-of-Use Asset - Finance Leases	`FinanceLeaseRightOfUseAsset`	$129.00K	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$77.43M	USD	Point-in-time
Investments, at Equity, and Advances to 50% or Less Owned Companies	`InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures`	$75.31M	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$2.73M	USD	Point-in-time
Other Assets	`OtherAssetsNoncurrent`	$2.67M	USD	Point-in-time
Total assets	`Assets`	$902.06M	USD	Point-in-time
Total assets	`Assets`	$1.02B	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$7.03M	USD	Point-in-time
Current portion of operating lease liabilities	`OperatingLeaseLiabilityCurrent`	$1.27M	USD	Point-in-time
Current portion of financing lease liabilities	`FinanceLeaseLiabilityCurrent`	$36.00K	USD	Point-in-time
Current portion of financing lease liabilities	`FinanceLeaseLiabilityCurrent`	$32.00K	USD	Point-in-time
Recourse	`RecourseLongTermDebtCurrent`	$26.73M	USD	Point-in-time
Recourse	`RecourseLongTermDebtCurrent`	$28.88M	USD	Point-in-time
Non-recourse	`NonRecourseLongTermDebtCurrent`	$5.64M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$29.97M	USD	Point-in-time
Accounts payable and accrued expenses	`AccountsPayableAndAccruedLiabilitiesCurrent`	$23.58M	USD	Point-in-time
Due to SEACOR Holdings	`DueToAffiliateCurrent`	$276.00K	USD	Point-in-time
Accrued wages and benefits	`EmployeeRelatedLiabilitiesCurrent`	$1.74M	USD	Point-in-time
Accrued wages and benefits	`EmployeeRelatedLiabilitiesCurrent`	$1.53M	USD	Point-in-time
Accrued interest	`InterestAndDividendsPayableCurrent`	$3.24M	USD	Point-in-time
Accrued interest	`InterestAndDividendsPayableCurrent`	$1.66M	USD	Point-in-time
Deferred revenue and unearned revenue	`ContractWithCustomerLiabilityCurrent`	$2.36M	USD	Point-in-time
Deferred revenue and unearned revenue	`ContractWithCustomerLiabilityCurrent`	$4.45M	USD	Point-in-time
Accrued capital, repair, and maintenance expenditures	`AccruedCapitalRepairAndMaintenanceExpendituresCurrent`	$1.36M	USD	Point-in-time
Accrued capital, repair, and maintenance expenditures	`AccruedCapitalRepairAndMaintenanceExpendituresCurrent`	$11.33M	USD	Point-in-time
Accrued insurance deductibles and premiums	`AccruedInsuranceCurrent`	$2.27M	USD	Point-in-time
Accrued insurance deductibles and premiums	`AccruedInsuranceCurrent`	$3.09M	USD	Point-in-time
Accrued professional fees	`AccruedProfessionalFeesCurrent`	$975.00K	USD	Point-in-time
Accrued professional fees	`AccruedProfessionalFeesCurrent`	$1.20M	USD	Point-in-time
Derivatives	`DerivativeLiabilitiesCurrent`	$2.48M	USD	Point-in-time
Derivatives	`DerivativeLiabilitiesCurrent`	$4.59M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$5.87M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$4.44M	USD	Point-in-time
Liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$30.93M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$75.14M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$131.80M	USD	Point-in-time
Long-Term Operating Lease Liabilities	`OperatingLeaseLiabilityNoncurrent`	$4.34M	USD	Point-in-time
Long-Term Operating Lease Liabilities	`OperatingLeaseLiabilityNoncurrent`	$4.00M	USD	Point-in-time
Long-Term Financing Lease Liabilities	`FinanceLeaseLiabilityNoncurrent`	$105.00K	USD	Point-in-time
Long-Term Financing Lease Liabilities	`FinanceLeaseLiabilityNoncurrent`	$84.00K	USD	Point-in-time
Recourse	`RecourseLongTermDebtNoncurrent`	$328.69M	USD	Point-in-time
Recourse	`RecourseLongTermDebtNoncurrent`	$316.19M	USD	Point-in-time
Non-recourse	`NonRecourseLongTermDebtNoncurrent`	$111.82M	USD	Point-in-time
Non-recourse	`NonRecourseLongTermDebtNoncurrent`	$5.46M	USD	Point-in-time
Conversion Option Liability on Convertible Senior Notes	`DerivativeLiabilitiesNoncurrent`	$2.00K	USD	Point-in-time
Conversion Option Liability on Convertible Senior Notes	`DerivativeLiabilitiesNoncurrent`	$5.00K	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$43.46M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$35.82M	USD	Point-in-time
Deferred Gains and Other Liabilities	`OtherLiabilitiesNoncurrent`	$2.92M	USD	Point-in-time
Deferred Gains and Other Liabilities	`OtherLiabilitiesNoncurrent`	$3.24M	USD	Point-in-time
Total liabilities	`Liabilities`	$615.83M	USD	Point-in-time
Total liabilities	`Liabilities`	$447.26M	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 24,503,380 and 23,504,050 shares issued in 2021 and 2020, respectively	`CommonStockValue`	$235.00K	USD	Point-in-time
Common stock, $.01 par value, 60,000,000 shares authorized; 24,503,380 and 23,504,050 shares issued in 2021 and 2020, respectively	`CommonStockValue`	$245.00K	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$451.18M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapitalCommonStock`	$455.37M	USD	Point-in-time
Retained Earnings (Accumulated deficit)	`RetainedEarningsAccumulatedDeficit`	$-51.84M	USD	Point-in-time
Retained Earnings (Accumulated deficit)	`RetainedEarningsAccumulatedDeficit`	$-7.06M	USD	Point-in-time
Shares held in treasury of 127,738 and 73,284, respectively, at cost	`TreasuryStockValue`	$1.12M	USD	Point-in-time
Shares held in treasury of 127,738 and 73,284, respectively, at cost	`TreasuryStockValue`	$848.00K	USD	Point-in-time
Accumulated other comprehensive gain, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$7.04M	USD	Point-in-time
Accumulated other comprehensive gain, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$2.79M	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$454.48M	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$401.52M	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$320.00K	USD	Point-in-time
Noncontrolling interests in subsidiaries	`MinorityInterest`	$319.00K	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$401.84M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$478.92M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$436.65M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$454.80M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$459.40M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$451.36M	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$1.02B	USD	Point-in-time
Total liabilities and equity	`LiabilitiesAndStockholdersEquity`	$902.06M	USD	Point-in-time

Income Statement 122 line items

Line Item	Tag	Value	Unit	Period
Operating Revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$122.97M	USD	3 Qtrs
Operating Revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$36.22M	USD	1 Quarter
Operating Revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$105.82M	USD	3 Qtrs
Operating Revenues	`RevenueFromContractWithCustomerIncludingAssessedTax`	$43.66M	USD	1 Quarter
Operating	`OperatingCostsAndExpenses`	$92.37M	USD	3 Qtrs
Operating	`OperatingCostsAndExpenses`	$33.45M	USD	1 Quarter
Operating	`OperatingCostsAndExpenses`	$24.72M	USD	1 Quarter
Operating	`OperatingCostsAndExpenses`	$65.58M	USD	3 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$31.52M	USD	3 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$9.13M	USD	1 Quarter
Administrative and general	`GeneralAndAdministrativeExpense`	$26.90M	USD	3 Qtrs
Administrative and general	`GeneralAndAdministrativeExpense`	$8.88M	USD	1 Quarter
Lease expense	`LeaseExpense`	$5.73M	USD	3 Qtrs
Lease expense	`LeaseExpense`	$1.11M	USD	1 Quarter
Lease expense	`LeaseExpense`	$3.42M	USD	3 Qtrs
Lease expense	`LeaseExpense`	$1.20M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$43.20M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$41.92M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$14.31M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$14.83M	USD	1 Quarter
Costs and expenses	`CostsAndExpenses`	$58.00M	USD	1 Quarter
Costs and expenses	`CostsAndExpenses`	$144.75M	USD	3 Qtrs
Costs and expenses	`CostsAndExpenses`	$165.88M	USD	3 Qtrs
Costs and expenses	`CostsAndExpenses`	$49.64M	USD	1 Quarter
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$233.00K	USD	1 Quarter
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-15.79M	USD	3 Qtrs
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$20.44M	USD	3 Qtrs
Gains (Losses) on Asset Dispositions and Impairments, Net	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$56.00K	USD	1 Quarter
Operating (Loss)	`OperatingIncomeLoss`	$-22.48M	USD	3 Qtrs
Operating (Loss)	`OperatingIncomeLoss`	$-54.73M	USD	3 Qtrs
Operating (Loss)	`OperatingIncomeLoss`	$-13.18M	USD	1 Quarter
Operating (Loss)	`OperatingIncomeLoss`	$-14.28M	USD	1 Quarter
Interest income	`InvestmentIncomeInterest`	$1.21M	USD	3 Qtrs
Interest income	`InvestmentIncomeInterest`	$1.25M	USD	3 Qtrs
Interest income	`InvestmentIncomeInterest`	$124.00K	USD	1 Quarter
Interest income	`InvestmentIncomeInterest`	$34.00K	USD	1 Quarter
Interest expense	`InterestExpense`	$22.40M	USD	3 Qtrs
Interest expense	`InterestExpense`	$6.40M	USD	1 Quarter
Interest expense	`InterestExpense`	$8.31M	USD	1 Quarter
Interest expense	`InterestExpense`	$21.73M	USD	3 Qtrs
SEACOR Holdings guarantee fees	`GuaranteeFeesRelatedParty`	$7.00K	USD	3 Qtrs
SEACOR Holdings guarantee fees	`GuaranteeFeesRelatedParty`	$36.00K	USD	3 Qtrs
SEACOR Holdings guarantee fees	`GuaranteeFeesRelatedParty`	$11.00K	USD	1 Quarter
Gain on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	$61.99M	USD	3 Qtrs
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	$5.20M	USD	3 Qtrs
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	$5.00K	USD	1 Quarter
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	$2.00K	USD	1 Quarter
Derivative gains, net	`GainLossOnDerivativeInstrumentsNetPretax`	$387.00K	USD	3 Qtrs
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-911.00K	USD	1 Quarter
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$245.00K	USD	1 Quarter
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-878.00K	USD	3 Qtrs
Foreign currency gains (losses), net	`ForeignCurrencyTransactionGainLossBeforeTax`	$-8.00K	USD	3 Qtrs
Gain from return of investments in 50% or less owned companies and other, net	`GainLossFromReturnOfInvestmentsAndOtherNet`	$9.44M	USD	3 Qtrs
Gain from return of investments in 50% or less owned companies and other, net	`GainLossFromReturnOfInvestmentsAndOtherNet`	$9.44M	USD	1 Quarter
Nonoperating income expense	`NonoperatingIncomeExpense`	$-9.20M	USD	1 Quarter
Nonoperating income expense	`NonoperatingIncomeExpense`	$3.41M	USD	1 Quarter
Nonoperating income expense	`NonoperatingIncomeExpense`	$-16.03M	USD	3 Qtrs
Nonoperating income expense	`NonoperatingIncomeExpense`	$50.45M	USD	3 Qtrs
(Loss) Income from Continuing Operations Before Income Tax Benefit and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-22.38M	USD	1 Quarter
(Loss) Income from Continuing Operations Before Income Tax Benefit and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-70.76M	USD	3 Qtrs
(Loss) Income from Continuing Operations Before Income Tax Benefit and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-10.87M	USD	1 Quarter
(Loss) Income from Continuing Operations Before Income Tax Benefit and Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$27.98M	USD	3 Qtrs
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$-3.12M	USD	1 Quarter
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$-24.79M	USD	3 Qtrs
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$-725.00K	USD	1 Quarter
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$12.50M	USD	3 Qtrs
(Loss) Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsAndNoncontrollingInterestAfterTax`	$-45.97M	USD	3 Qtrs
(Loss) Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsAndNoncontrollingInterestAfterTax`	$-19.25M	USD	1 Quarter
(Loss) Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsAndNoncontrollingInterestAfterTax`	$15.47M	USD	3 Qtrs
(Loss) Income from Continuing Operations Before Equity in Earnings of 50% or Less Owned Companies	`IncomeLossFromContinuingOperationsBeforeEquityMethodInvestmentsAndNoncontrollingInterestAfterTax`	$-10.14M	USD	1 Quarter
Equity in Earnings Gains (Losses) of 50% or Less Owned Companies	`IncomeLossFromEquityMethodInvestments`	$10.58M	USD	3 Qtrs
Equity in Earnings Gains (Losses) of 50% or Less Owned Companies	`IncomeLossFromEquityMethodInvestments`	$-588.00K	USD	1 Quarter
Equity in Earnings Gains (Losses) of 50% or Less Owned Companies	`IncomeLossFromEquityMethodInvestments`	$4.31M	USD	1 Quarter
Equity in Earnings Gains (Losses) of 50% or Less Owned Companies	`IncomeLossFromEquityMethodInvestments`	$1.52M	USD	3 Qtrs
(Loss) Income from Continuing Operations	`IncomeLossFromContinuingOperations`	$-5.83M	USD	1 Quarter
(Loss) Income from Continuing Operations	`IncomeLossFromContinuingOperations`	$26.06M	USD	3 Qtrs
(Loss) Income from Continuing Operations	`IncomeLossFromContinuingOperations`	$-19.84M	USD	1 Quarter
(Loss) Income from Continuing Operations	`IncomeLossFromContinuingOperations`	$-44.45M	USD	3 Qtrs
Income on Discontinued Operations, Net of Tax (see Note 12)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$1.77M	USD	1 Quarter
Income on Discontinued Operations, Net of Tax (see Note 12)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$22.93M	USD	3 Qtrs
Income on Discontinued Operations, Net of Tax (see Note 12)	`IncomeLossFromDiscontinuedOperationsNetOfTax`	$314.00K	USD	3 Qtrs
Net (Loss) Income	`ProfitLoss`	$-18.08M	USD	1 Quarter
Net (Loss) Income	`ProfitLoss`	$-44.13M	USD	3 Qtrs
Net (Loss) Income	`ProfitLoss`	$-5.83M	USD	1 Quarter
Net (Loss) Income	`ProfitLoss`	$48.98M	USD	3 Qtrs
Net Income (Loss) Attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$-4.04M	USD	3 Qtrs
Net Income (Loss) Attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$1.00K	USD	3 Qtrs
Net Income (Loss) Attributable to Noncontrolling Interests in Subsidiaries	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.00K	USD	1 Quarter
Net (Loss) Income Attributable to SEACOR Marine Holdings Inc.	`NetIncomeLoss`	$-40.10M	USD	3 Qtrs
Net (Loss) Income Attributable to SEACOR Marine Holdings Inc.	`NetIncomeLoss`	$-18.08M	USD	1 Quarter
Net (Loss) Income Attributable to SEACOR Marine Holdings Inc.	`NetIncomeLoss`	$48.98M	USD	3 Qtrs
Net (Loss) Income Attributable to SEACOR Marine Holdings Inc.	`NetIncomeLoss`	$-5.83M	USD	1 Quarter
Basic	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.03	USD	3 Qtrs
Basic	`IncomeLossFromContinuingOperationsPerBasicShare`	$-1.64	USD	3 Qtrs
Basic	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.23	USD	1 Quarter
Basic	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.79	USD	1 Quarter
Diluted	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.23	USD	1 Quarter
Diluted	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.79	USD	1 Quarter
Diluted	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-1.64	USD	3 Qtrs
Diluted	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.02	USD	3 Qtrs
Basic	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.90	USD	3 Qtrs
Basic	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.07	USD	1 Quarter
Basic	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$0.01	USD	3 Qtrs
Diluted	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.01	USD	3 Qtrs
Diluted	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.90	USD	3 Qtrs
Diluted	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$0.07	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$1.93	USD	3 Qtrs
Basic	`EarningsPerShareBasic`	$-0.72	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$-0.23	USD	1 Quarter
Basic	`EarningsPerShareBasic`	$-1.63	USD	3 Qtrs
Diluted	`EarningsPerShareDiluted`	$-0.23	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$-0.72	USD	1 Quarter
Diluted	`EarningsPerShareDiluted`	$-1.63	USD	3 Qtrs
Diluted	`EarningsPerShareDiluted`	$1.92	USD	3 Qtrs
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	24.99M	shares	1 Quarter
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	24.61M	shares	3 Qtrs
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	25.52M	shares	1 Quarter
Basic	`WeightedAverageNumberOfSharesOutstandingBasic`	25.42M	shares	3 Qtrs
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	25.52M	shares	1 Quarter
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	25.43M	shares	3 Qtrs
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	24.99M	shares	1 Quarter
Diluted	`WeightedAverageNumberOfDilutedSharesOutstanding`	24.61M	shares	3 Qtrs

Cash Flow Statement 107 line items

Line Item	Tag	Value	Unit	Period
Net Income (Loss)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$-48.98M	USD	3 Qtrs
Net Income (Loss)	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$44.45M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$43.20M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$41.92M	USD	3 Qtrs
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$14.31M	USD	1 Quarter
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$14.83M	USD	1 Quarter
Deferred financing costs amortization	`AmortizationOfFinancingCosts`	$769.00K	USD	3 Qtrs
Deferred financing costs amortization	`AmortizationOfFinancingCosts`	$841.00K	USD	3 Qtrs
Stock-based compensation expense	`ShareBasedCompensation`	$3.79M	USD	3 Qtrs
Stock-based compensation expense	`ShareBasedCompensation`	$3.92M	USD	3 Qtrs
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$5.25M	USD	3 Qtrs
Debt discount amortization	`AmortizationOfDebtDiscountPremium`	$4.75M	USD	3 Qtrs
Bad debt recoveries	`ProvisionForDoubtfulAccounts`	$376.00K	USD	3 Qtrs
Bad debt recoveries	`ProvisionForDoubtfulAccounts`	$278.00K	USD	3 Qtrs
(Gain) Loss from equipment sales, retirements or impairments	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$233.00K	USD	1 Quarter
(Gain) Loss from equipment sales, retirements or impairments	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-15.79M	USD	3 Qtrs
(Gain) Loss from equipment sales, retirements or impairments	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$20.44M	USD	3 Qtrs
(Gain) Loss from equipment sales, retirements or impairments	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$56.00K	USD	1 Quarter
Gain on the Sale of Windcat Workboats	`GainLossOnDispositionOfAssets1`	$22.76M	USD	3 Qtrs
Gain from return of investments in 50% or less owned companies	`GainLossFromReturnOfInvestments`	$9.44M	USD	3 Qtrs
Gain on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebtBeforeWriteOffOfDeferredDebtIssuanceCost`	$62.75M	USD	3 Qtrs
Derivative gains	`GainLossOnDerivativeInstrumentsNetPretax`	$5.20M	USD	3 Qtrs
Derivative gains	`GainLossOnDerivativeInstrumentsNetPretax`	$5.00K	USD	1 Quarter
Derivative gains	`GainLossOnDerivativeInstrumentsNetPretax`	$2.00K	USD	1 Quarter
Derivative gains	`GainLossOnDerivativeInstrumentsNetPretax`	$387.00K	USD	3 Qtrs
Interest on Finance Lease	`ProceedsFromInterestOnFinanceLeases`	$3.00K	USD	3 Qtrs
Cash settlement payments on derivative transactions, net	`PaymentsForProceedsFromDerivativeInstrumentsOperatingActivities`	$890.00K	USD	3 Qtrs
Cash settlement payments on derivative transactions, net	`PaymentsForProceedsFromDerivativeInstrumentsOperatingActivities`	$1.75M	USD	3 Qtrs
Currency losses	`ForeignCurrencyTransactionGainLossBeforeTax`	$-911.00K	USD	1 Quarter
Currency losses	`ForeignCurrencyTransactionGainLossBeforeTax`	$245.00K	USD	1 Quarter
Currency losses	`ForeignCurrencyTransactionGainLossBeforeTax`	$-878.00K	USD	3 Qtrs
Currency losses	`ForeignCurrencyTransactionGainLossBeforeTax`	$-8.00K	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$7.64M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$2.51M	USD	3 Qtrs
Equity Earnings	`IncomeLossFromEquityMethodInvestments`	$10.58M	USD	3 Qtrs
Equity Earnings	`IncomeLossFromEquityMethodInvestments`	$-588.00K	USD	1 Quarter
Equity Earnings	`IncomeLossFromEquityMethodInvestments`	$4.31M	USD	1 Quarter
Equity Earnings	`IncomeLossFromEquityMethodInvestments`	$1.52M	USD	3 Qtrs
Dividends received from equity investees	`ProceedsFromDividendsReceived`	$4.51M	USD	3 Qtrs
Dividends received from equity investees	`ProceedsFromDividendsReceived`	$2.12M	USD	3 Qtrs
Accounts receivables	`IncreaseDecreaseInReceivables`	$-23.59M	USD	3 Qtrs
Accounts receivables	`IncreaseDecreaseInReceivables`	$37.83M	USD	3 Qtrs
Other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-1.46M	USD	3 Qtrs
Other assets	`IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets`	$-5.92M	USD	3 Qtrs
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-7.44M	USD	3 Qtrs
Accounts payable and accrued liabilities	`IncreaseDecreaseInAccountsPayableAndAccruedLiabilities`	$-15.54M	USD	3 Qtrs
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$4.94M	USD	3 Qtrs
Net cash provided by (used in) operating activities	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$-27.40M	USD	3 Qtrs
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$6.56M	USD	3 Qtrs
Purchases of property and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$18.31M	USD	3 Qtrs
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$30.14M	USD	3 Qtrs
Proceeds from disposition of property and equipment	`ProceedsFromSaleOfPropertyPlantAndEquipment`	$20.67M	USD	3 Qtrs
Construction reserve funds utilized	`PaymentsForProceedsFromOtherInvestingActivities`	$-9.15M	USD	3 Qtrs
Construction reserve funds transferred to short-term cash	`ConstructionReserveFundsTransferredToShortTermCash`	$3.75M	USD	3 Qtrs
Purchase of subsidiary from joint venture	`PaymentsToAcquireProceedsFromDivestitureInterestInJointVenture`	$8.45M	USD	3 Qtrs
Proceeds from sale of Windcat Workboats, net of transaction costs and cash sold	`ProceedsFromSaleOfPropertyNetOfTransactionCostsAndCashSold`	$38.72M	USD	3 Qtrs
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$736.00K	USD	3 Qtrs
Investments in and advances to 50% or less owned companies	`PaymentsToAcquireEquityMethodInvestments`	$958.00K	USD	3 Qtrs
Excess distributions from equity investees	`ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital`	$9.44M	USD	3 Qtrs
Principal payments on notes due from equity investees	`RepaymentOfNotesReceivableFromRelatedParties`	$490.00K	USD	3 Qtrs
Principal payments on notes due from equity investees	`RepaymentOfNotesReceivableFromRelatedParties`	$3.98M	USD	3 Qtrs
Net cash provided by investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$74.97M	USD	3 Qtrs
Net cash provided by investing activities	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$6.35M	USD	3 Qtrs
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$16.82M	USD	3 Qtrs
Payments on long-term debt	`RepaymentsOfLongTermDebt`	$72.14M	USD	3 Qtrs
Payments on debt extinguishment cost	`PaymentsOfDebtExtinguishmentCosts`	$1.00K	USD	3 Qtrs
Payments on debt extinguishment cost	`PaymentsOfDebtExtinguishmentCosts`	$755.00K	USD	3 Qtrs
Payments on finance lease	`FinanceLeasePrincipalPayments`	$21.00K	USD	3 Qtrs
Proceeds from exercise of warrant options	`ProceedsFromWarrantExercises`	$2.00K	USD	3 Qtrs
Issuance of stock	`ProceedsFromIssuanceOfCommonStock`	$10.00K	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-16.82M	USD	3 Qtrs
Net cash used in financing activities	`NetCashProvidedByUsedInFinancingActivitiesContinuingOperations`	$-72.91M	USD	3 Qtrs
Effects of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-21.00K	USD	3 Qtrs
Effects of Exchange Rate Changes on Cash and Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$-949.00K	USD	3 Qtrs
Net Increase (Decrease) in Cash, Restricted Cash and Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseContinuingOperationsIncludingExchangeRateEffect`	$-38.82M	USD	3 Qtrs
Net Increase (Decrease) in Cash, Restricted Cash and Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseContinuingOperationsIncludingExchangeRateEffect`	$6.99M	USD	3 Qtrs
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$6.35M	USD	3 Qtrs
Operating Activities	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$-171.00K	USD	3 Qtrs
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	-	USD	3 Qtrs
Investing Activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-6.88M	USD	3 Qtrs
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	$941.00K	USD	3 Qtrs
Financing Activities	`CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations`	-	USD	3 Qtrs
Effects of Exchange Rate Changes on Cash, Restricted Cash and Cash Equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsDisposalGroupIncludingDiscontinuedOperations`	$-102.00K	USD	3 Qtrs
Net (Decrease) Increase in Cash, Restricted Cash and Cash Equivalents on Discontinued Operations	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperationsIncludingExchangeRateEffect`	$304.00K	USD	3 Qtrs
Net (Decrease) Increase in Cash, Restricted Cash and Cash Equivalents on Discontinued Operations	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseDiscontinuedOperationsIncludingExchangeRateEffect`	$-171.00K	USD	3 Qtrs
Net Increase (Decrease) in Cash, Restricted Cash and Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-38.52M	USD	3 Qtrs
Net Increase (Decrease) in Cash, Restricted Cash and Cash Equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$6.82M	USD	3 Qtrs
Cash, Restricted Cash and Cash Equivalents, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$87.05M	USD	Point-in-time
Cash, Restricted Cash and Cash Equivalents, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$46.35M	USD	Point-in-time
Cash, Restricted Cash and Cash Equivalents, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$48.53M	USD	Point-in-time
Cash, Restricted Cash and Cash Equivalents, Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$39.54M	USD	Point-in-time
Cash, Restricted Cash and Cash Equivalents, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$87.05M	USD	Point-in-time
Cash, Restricted Cash and Cash Equivalents, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$46.35M	USD	Point-in-time
Cash, Restricted Cash and Cash Equivalents, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$48.53M	USD	Point-in-time
Cash, Restricted Cash and Cash Equivalents, End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$39.54M	USD	Point-in-time
Cash paid for interest, excluding capitalized interest	`InterestPaidNet`	$15.23M	USD	3 Qtrs
Cash paid for interest, excluding capitalized interest	`InterestPaidNet`	$15.39M	USD	3 Qtrs
Income taxes refunded, net	`IncomeTaxesPaidNet`	$32.76M	USD	3 Qtrs
Income taxes refunded, net	`IncomeTaxesPaidNet`	$456.00K	USD	3 Qtrs
Increase in property, plant and equipment related to an acquisition	`NoncashOrPartNoncashAcquisitionFixedAssetsAcquired1`	$142.28M	USD	3 Qtrs
Decrease in joint venture investments related to an acquisition	`NoncashDecreaseInJointVentureInvestmentsRelatedToAcquisition`	$22.22M	USD	3 Qtrs
Increase in long-term debt related to an acquisition	`NoncashOrPartNoncashAcquisitionDebtAssumed1`	$75.57M	USD	3 Qtrs
Increase in long-term debt related to asset purchases	`NoncashIncreaseInLongTermDebtRelatedToAssetPurchases`	$6.50M	USD	3 Qtrs
Increase in long-term debt related to asset purchases	`NoncashIncreaseInLongTermDebtRelatedToAssetPurchases`	$21.25M	USD	3 Qtrs
Decrease in debt related to debt settlement	`IncreaseDecreaseInDebtRelatedToDebtSettlement`	$-62.75M	USD	3 Qtrs
Decrease in capital expenditures in accounts payable and accrued liabilities	`IncreaseDecreaseInCapitalExpendituresInAccountsPayableAndAccruedLiabilities`	$-5.44M	USD	3 Qtrs
Decrease in capital expenditures in accounts payable and accrued liabilities	`IncreaseDecreaseInCapitalExpendituresInAccountsPayableAndAccruedLiabilities`	$-10.38M	USD	3 Qtrs

Stockholders Equity 40 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$401.84M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$478.92M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$436.65M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$454.80M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$459.40M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$451.36M	USD	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	24.50M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	23.50M	shares	Point-in-time
Issuance of Common Stock	`StockIssuedDuringPeriodValueNewIssues`	$3.36M	USD	3 Qtrs
Restricted stock grants	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$3.00K	USD	3 Qtrs
Restricted stock grants	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	$8.00K	USD	3 Qtrs
Amortization of employee share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$1.20M	USD	1 Quarter
Amortization of employee share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.76M	USD	3 Qtrs
Amortization of employee share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$1.29M	USD	1 Quarter
Amortization of employee share awards	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.21M	USD	3 Qtrs
Exercise of Warrants	`StockRepurchasedDuringPeriodValueExerciseOfWarrants`	$2.00K	USD	3 Qtrs
Exercise of Warrants	`StockRepurchasedDuringPeriodValueExerciseOfWarrants`	$2.00K	USD	1 Quarter
Restricted stock vesting	`TreasuryStockValueAcquiredCostMethod`	$272.00K	USD	3 Qtrs
Restricted stock vesting	`TreasuryStockValueAcquiredCostMethod`	$178.00K	USD	3 Qtrs
Restricted stock vesting (in shares)	`TreasuryStockSharesAcquired`	54,454.00	shares	3 Qtrs
Director share awards	`StockIssuedDuringPeriodValueIssuedForServices`	$755.00K	USD	3 Qtrs
Director share awards	`StockIssuedDuringPeriodValueIssuedForServices`	$437.00K	USD	3 Qtrs
Sale of Windcat Workboats	`SaleOfWindcatWorkboats`	$4.20M	USD	3 Qtrs
Acquisition of consolidated joint venture	`StockGrantedDuringPeriodValueSharebasedCompensation`	$3.36M	USD	3 Qtrs
Net (loss) income	`ProfitLoss`	$-18.08M	USD	1 Quarter
Net (loss) income	`ProfitLoss`	$-44.13M	USD	3 Qtrs
Net (loss) income	`ProfitLoss`	$-5.83M	USD	1 Quarter
Net (loss) income	`ProfitLoss`	$48.98M	USD	3 Qtrs
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$4.25M	USD	3 Qtrs
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-63.00K	USD	1 Quarter
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$2.16M	USD	1 Quarter
Other comprehensive loss	`OtherComprehensiveIncomeLossNetOfTax`	$-1.93M	USD	3 Qtrs
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$401.84M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$478.92M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$436.65M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$454.80M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$459.40M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$451.36M	USD	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	24.50M	shares	Point-in-time
Balance (in shares)	`CommonStockSharesIssued`	23.50M	shares	Point-in-time

Comprehensive Income 31 line items

Line Item	Tag	Value	Unit	Period
Reclassification of derivative losses on cash flow hedges to equity in earnings	`PercentageOfOwnedCompaniesDerivativeLossesOnCashFlowHedgesReclassificationToEquityInEarnings`	0.50	pure	1 Quarter
Reclassification of derivative losses on cash flow hedges to equity in earnings	`PercentageOfOwnedCompaniesDerivativeLossesOnCashFlowHedgesReclassificationToEquityInEarnings`	0.50	pure	3 Qtrs
Reclassification of derivative losses on cash flow hedges to equity in earnings	`PercentageOfOwnedCompaniesDerivativeLossesOnCashFlowHedgesReclassificationToEquityInEarnings`	0.50	pure	3 Qtrs
Reclassification of derivative losses on cash flow hedges to equity in earnings	`PercentageOfOwnedCompaniesDerivativeLossesOnCashFlowHedgesReclassificationToEquityInEarnings`	0.50	pure	1 Quarter
Net (Loss) Income	`ProfitLoss`	$-18.08M	USD	1 Quarter
Net (Loss) Income	`ProfitLoss`	$-44.13M	USD	3 Qtrs
Net (Loss) Income	`ProfitLoss`	$-5.83M	USD	1 Quarter
Net (Loss) Income	`ProfitLoss`	$48.98M	USD	3 Qtrs
Foreign currency translation (losses) gains	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$3.82M	USD	3 Qtrs
Foreign currency translation (losses) gains	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$-504.00K	USD	1 Quarter
Foreign currency translation (losses) gains	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$2.07M	USD	1 Quarter
Foreign currency translation (losses) gains	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax`	$-385.00K	USD	3 Qtrs
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-22.00K	USD	3 Qtrs
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-2.03M	USD	3 Qtrs
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-54.00K	USD	1 Quarter
Derivative losses on cash flow hedges	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-82.00K	USD	1 Quarter
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossBeforeTax`	$2.16M	USD	1 Quarter
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossBeforeTax`	$4.25M	USD	3 Qtrs
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossBeforeTax`	$-1.93M	USD	3 Qtrs
Other comprehensive income (loss)	`OtherComprehensiveIncomeLossBeforeTax`	$-63.00K	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-15.92M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-5.89M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-46.06M	USD	3 Qtrs
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$53.24M	USD	3 Qtrs
Comprehensive Income (Loss) Attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-4.04M	USD	3 Qtrs
Comprehensive Income (Loss) Attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$1.00K	USD	3 Qtrs
Comprehensive Income (Loss) Attributable to Noncontrolling Interests in Subsidiaries	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$4.00K	USD	1 Quarter
Comprehensive (Loss) Income attributable to SEACOR Marine Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$-15.92M	USD	1 Quarter
Comprehensive (Loss) Income attributable to SEACOR Marine Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$53.24M	USD	3 Qtrs
Comprehensive (Loss) Income attributable to SEACOR Marine Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$-42.03M	USD	3 Qtrs
Comprehensive (Loss) Income attributable to SEACOR Marine Holdings Inc.	`ComprehensiveIncomeNetOfTax`	$-5.89M	USD	1 Quarter

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