10-K Filing

COHU INC CIK: 21535 FY 2020

Filing Information

Form Type	10-K
Accession Number	`0001437749-21-004277`
Period End Date	20201231
Filing Date	20210226
Fiscal Year	2020
Fiscal Period	FY
XBRL Instance	cohu20201226_10k_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 99 Income Statement 157 Cash Flow Statement 175 Stockholders Equity 48 Comprehensive Income 52

Balance Sheet 99 line items

Line Item	Tag	Value	Unit	Period
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Preferred stock, par value (in dollars per share)	`PreferredStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	1.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$164.46M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$149.36M	USD	Point-in-time
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	1.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$155.19M	USD	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Preferred stock, shares issued (in shares)	`PreferredStockSharesIssued`	0.00	shares	Point-in-time
Short-term investments	`AvailableForSaleSecuritiesCurrent`	$904.00K	USD	Point-in-time
Short-term investments	`AvailableForSaleSecuritiesCurrent`	$20.67M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Accounts receivable, net	`AccountsAndOtherReceivablesNetCurrent`	$127.92M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Accounts receivable, net	`AccountsAndOtherReceivablesNetCurrent`	$151.92M	USD	Point-in-time
Inventories	`InventoryNet`	$142.50M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Inventories	`InventoryNet`	$130.71M	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	60.00M	shares	Point-in-time
Prepaid expenses	`PrepaidExpenseCurrent`	$17.48M	USD	Point-in-time
Prepaid expenses	`PrepaidExpenseCurrent`	$18.77M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	41.40M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	42.19M	shares	Point-in-time
Other current assets	`OtherAssetsCurrent`	$1.83M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	42.19M	shares	Point-in-time
Other current assets	`OtherAssetsCurrent`	$3.16M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	41.40M	shares	Point-in-time
Assets held for sale	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	$827.00K	USD	Point-in-time
Assets held for sale	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	-	USD	Point-in-time
Current assets of discontinued operations (Note 14)	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	-	USD	Point-in-time
Current assets of discontinued operations (Note 14)	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$3.50M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$485.05M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$439.70M	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$70.91M	USD	Point-in-time
Property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$66.92M	USD	Point-in-time
Goodwill	`Goodwill`	$252.30M	USD	Point-in-time
Goodwill	`Goodwill`	$242.13M	USD	Point-in-time
Goodwill	`Goodwill`	$238.67M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$233.69M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$275.02M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$20.03M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$23.19M	USD	Point-in-time
Operating lease right of use assets	`OperatingLeaseRightOfUseAsset`	$33.27M	USD	Point-in-time
Operating lease right of use assets	`OperatingLeaseRightOfUseAsset`	$29.20M	USD	Point-in-time
Noncurrent assets of discontinued operations (Note 14)	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	-	USD	Point-in-time
Noncurrent assets of discontinued operations (Note 14)	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$115.00K	USD	Point-in-time
Assets, Total	`Assets`	$1.08B	USD	Point-in-time
Assets, Total	`Assets`	$1.09B	USD	Point-in-time
Assets, Total	`Assets`	$1.13B	USD	Point-in-time
Short-term borrowings	`ShortTermBankLoansAndNotesPayable`	$3.19M	USD	Point-in-time
Short-term borrowings	`ShortTermBankLoansAndNotesPayable`	$5.31M	USD	Point-in-time
Current installments of long-term debt	`LoansPayableToBankCurrent`	$3.08M	USD	Point-in-time
Current installments of long-term debt	`LoansPayableToBankCurrent`	$3.32M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$48.70M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$67.92M	USD	Point-in-time
Customer advances	`ContractWithCustomerLiabilityCurrent`	$12.16M	USD	Point-in-time
Customer advances	`ContractWithCustomerLiabilityCurrent`	$14.41M	USD	Point-in-time
Accrued compensation and benefits	`EmployeeRelatedLiabilitiesCurrent`	$34.86M	USD	Point-in-time
Accrued compensation and benefits	`EmployeeRelatedLiabilitiesCurrent`	$23.74M	USD	Point-in-time
Accrued warranty	`ProductWarrantyAccrualClassifiedCurrent`	$6.07M	USD	Point-in-time
Accrued warranty	`ProductWarrantyAccrualClassifiedCurrent`	$5.89M	USD	Point-in-time
Deferred profit	`DeferredProfit`	$8.67M	USD	Point-in-time
Deferred profit	`DeferredProfit`	$7.64M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$3.89M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$3.86M	USD	Point-in-time
Other accrued liabilities	`OtherAccruedLiabilitiesCurrent`	$39.74M	USD	Point-in-time
Other accrued liabilities	`OtherAccruedLiabilitiesCurrent`	$30.27M	USD	Point-in-time
Current liabilities of discontinued operations (Note 14)	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	-	USD	Point-in-time
Current liabilities of discontinued operations (Note 14)	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$599.00K	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$148.88M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$174.45M	USD	Point-in-time
Long-term debt	`LongTermLoansFromBank`	$346.52M	USD	Point-in-time
Long-term debt	`LongTermLoansFromBank`	$311.55M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$31.31M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$28.82M	USD	Point-in-time
Long-term lease liabilities	`LeaseLiabilityNoncurrent`	$25.79M	USD	Point-in-time
Long-term lease liabilities	`LeaseLiabilityNoncurrent`	$28.88M	USD	Point-in-time
Accrued retirement benefits	`PostemploymentBenefitsLiabilityNoncurrent`	$21.66M	USD	Point-in-time
Accrued retirement benefits	`PostemploymentBenefitsLiabilityNoncurrent`	$21.93M	USD	Point-in-time
Noncurrent income tax liabilities	`AccruedIncomeTaxesNoncurrent`	$6.89M	USD	Point-in-time
Noncurrent income tax liabilities	`AccruedIncomeTaxesNoncurrent`	$8.44M	USD	Point-in-time
Other accrued liabilities	`OtherAccruedLiabilitiesNoncurrent`	$8.66M	USD	Point-in-time
Other accrued liabilities	`OtherAccruedLiabilitiesNoncurrent`	$8.90M	USD	Point-in-time
Noncurrent liabilities of discontinued operations (Note 14)	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	-	USD	Point-in-time
Noncurrent liabilities of discontinued operations (Note 14)	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	$24.00K	USD	Point-in-time
Preferred stock, $1 par value; 1,000 shares authorized, none issued	`PreferredStockValue`	-	USD	Point-in-time
Preferred stock, $1 par value; 1,000 shares authorized, none issued	`PreferredStockValue`	-	USD	Point-in-time
Common stock, $1 par value; 60,000 shares authorized, 42,190 shares issued and outstanding in 2020 and 41,395 shares in 2019	`CommonStockValue`	$41.40M	USD	Point-in-time
Common stock, $1 par value; 60,000 shares authorized, 42,190 shares issued and outstanding in 2020 and 41,395 shares in 2019	`CommonStockValue`	$42.19M	USD	Point-in-time
Paid-in capital	`AdditionalPaidInCapitalCommonStock`	$448.19M	USD	Point-in-time
Paid-in capital	`AdditionalPaidInCapitalCommonStock`	$433.19M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$42.52M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$26.23M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-34.03M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-4.33M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$483.07M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$512.29M	USD	Point-in-time
Liabilities and Equity, Total	`LiabilitiesAndStockholdersEquity`	$1.08B	USD	Point-in-time
Liabilities and Equity, Total	`LiabilitiesAndStockholdersEquity`	$1.09B	USD	Point-in-time

Income Statement 157 line items

Line Item	Tag	Value	Unit	Period
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$147.81M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$202.35M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$451.77M	USD	Annual
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$636.01M	USD	Annual
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$142.01M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$150.65M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$583.33M	USD	Annual
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$143.50M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$138.92M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$144.08M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$150.01M	USD	1 Quarter
Cost of sales (1)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$292.46M	USD	Annual
Cost of sales (1)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$364.23M	USD	Annual
Cost of sales (1)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$353.50M	USD	Annual
Research and development	`ResearchAndDevelopmentExpense`	$86.15M	USD	Annual
Research and development	`ResearchAndDevelopmentExpense`	$56.43M	USD	Annual
Research and development	`ResearchAndDevelopmentExpense`	$86.15M	USD	Annual
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$96.75M	USD	Annual
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$129.25M	USD	Annual
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$142.94M	USD	Annual
Amortization of purchased intangible assets	`AmortizationOfIntangibleAssets`	$39.59M	USD	Annual
Amortization of purchased intangible assets	`AmortizationOfIntangibleAssets`	$38.75M	USD	Annual
Amortization of purchased intangible assets	`AmortizationOfIntangibleAssets`	$17.20M	USD	Annual
Restructuring charges (Note 5)	`RestructuringCharges`	$18.70M	USD	Annual
Restructuring charges (Note 5)	`RestructuringCharges`	$7.62M	USD	Annual
Restructuring charges (Note 5)	`RestructuringCharges`	$13.48M	USD	Annual
Impairment charges	`ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill`	-	USD	Annual
Impairment charges	`ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill`	$11.25M	USD	Annual
Impairment charges	`ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill`	-	USD	Annual
Gain on sale of facilities	`GainLossOnSaleOfPropertyPlantEquipment`	-	USD	Annual
Gain on sale of facilities	`GainLossOnSaleOfPropertyPlantEquipment`	-	USD	Annual
Gain on sale of facilities	`GainLossOnSaleOfPropertyPlantEquipment`	$4.50M	USD	Annual
Costs and Expenses, Total	`CostsAndExpenses`	$635.66M	USD	Annual
Costs and Expenses, Total	`CostsAndExpenses`	$481.55M	USD	Annual
Costs and Expenses, Total	`CostsAndExpenses`	$632.75M	USD	Annual
Income (loss) from operations	`OperatingIncomeLoss`	$3.26M	USD	Annual
Income (loss) from operations	`OperatingIncomeLoss`	$-52.33M	USD	Annual
Income (loss) from operations	`OperatingIncomeLoss`	$-29.78M	USD	Annual
Interest expense	`InterestExpense`	$4.98M	USD	Annual
Interest expense	`InterestExpense`	$13.76M	USD	Annual
Interest expense	`InterestExpense`	$20.56M	USD	Annual
Interest income	`InvestmentIncomeInterestAndDividend`	$224.00K	USD	Annual
Interest income	`InvestmentIncomeInterestAndDividend`	$1.19M	USD	Annual
Interest income	`InvestmentIncomeInterestAndDividend`	$764.00K	USD	Annual
Foreign transaction gain (loss)	`ForeignCurrencyTransactionGainLossBeforeTax`	$-3.17M	USD	Annual
Foreign transaction gain (loss)	`ForeignCurrencyTransactionGainLossBeforeTax`	$1.66M	USD	Annual
Foreign transaction gain (loss)	`ForeignCurrencyTransactionGainLossBeforeTax`	$43.00K	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$268.00K	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Loss from continuing operations before taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-13.18M	USD	Annual
Loss from continuing operations before taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-72.08M	USD	Annual
Loss from continuing operations before taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-31.91M	USD	Annual
Income tax provision (benefit)	`IncomeTaxExpenseBenefit`	$-3.08M	USD	Annual
Income tax provision (benefit)	`IncomeTaxExpenseBenefit`	$631.00K	USD	Annual
Income tax provision (benefit)	`IncomeTaxExpenseBenefit`	$666.00K	USD	Annual
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-32.54M	USD	Annual
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-10.48M	USD	1 Quarter
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-22.85M	USD	1 Quarter
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-13.84M	USD	Annual
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-17.32M	USD	1 Quarter
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-19.38M	USD	1 Quarter
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-69.00M	USD	Annual
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-4.74M	USD	1 Quarter
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-16.28M	USD	1 Quarter
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$14.86M	USD	1 Quarter
Loss from continuing operations	`IncomeLossFromContinuingOperations`	$-6.65M	USD	1 Quarter
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$119.00K	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$42.00K	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-697.00K	USD	Annual
Net loss	`ProfitLoss`	$-32.42M	USD	Annual
Net loss	`ProfitLoss`	$-4.74M	USD	1 Quarter
Net loss	`ProfitLoss`	$-19.36M	USD	1 Quarter
Net loss	`ProfitLoss`	$-69.69M	USD	Annual
Net loss	`ProfitLoss`	$14.86M	USD	1 Quarter
Net loss	`ProfitLoss`	$-17.28M	USD	1 Quarter
Net loss	`ProfitLoss`	$-10.33M	USD	1 Quarter
Net loss	`ProfitLoss`	$-6.65M	USD	1 Quarter
Net loss	`ProfitLoss`	$-22.69M	USD	1 Quarter
Net loss	`ProfitLoss`	$-17.32M	USD	1 Quarter
Net loss	`ProfitLoss`	$-13.80M	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-243.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-32.18M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-17.27M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-69.70M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-19.32M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-10.47M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-4.74M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-6.65M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$14.86M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-17.28M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-13.80M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-22.64M	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.11	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.39	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.25	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.56	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-1.68	USD	Annual
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.16	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.35	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.47	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.42	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.33	USD	Annual
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-1.02	USD	Annual
Income (loss) from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.01	USD	Annual
Income (loss) from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	Annual
Income (loss) from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	-	USD	Annual
Net income (loss) attributable to noncontrolling interest (in dollars per share)	`NetIncomeLossAttributableToNoncontrollingInterestPerBasicShare`	-	USD	Annual
Net income (loss) attributable to noncontrolling interest (in dollars per share)	`NetIncomeLossAttributableToNoncontrollingInterestPerBasicShare`	$0.01	USD	Annual
Net income (loss) attributable to noncontrolling interest (in dollars per share)	`NetIncomeLossAttributableToNoncontrollingInterestPerBasicShare`	-	USD	Annual
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.42	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-1.01	USD	Annual
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-1.69	USD	Annual
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.33	USD	Annual
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$0.35	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.25	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.16	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.11	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.55	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.42	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.47	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.47	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-1.68	USD	Annual
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.34	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.11	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-1.02	USD	Annual
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.56	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.39	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.42	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.33	USD	Annual
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.16	USD	1 Quarter
Loss from continuing operations before noncontrolling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.25	USD	1 Quarter
Income (loss) from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.01	USD	Annual
Income (loss) from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	Annual
Income (loss) from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	-	USD	Annual
Net income (loss) attributable to noncontrolling interest (in dollars per share)	`NetIncomeLossAttributableToNoncontrollingInterestPerDilutedShare`	-	USD	Annual
Net income (loss) attributable to noncontrolling interest (in dollars per share)	`NetIncomeLossAttributableToNoncontrollingInterestPerDilutedShare`	$0.01	USD	Annual
Net income (loss) attributable to noncontrolling interest (in dollars per share)	`NetIncomeLossAttributableToNoncontrollingInterestPerDilutedShare`	-	USD	Annual
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.55	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.42	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.11	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.16	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.33	USD	Annual
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.42	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.47	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$0.34	USD	1 Quarter
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-1.01	USD	Annual
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-1.69	USD	Annual
Net loss attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.25	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	41.16M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	41.85M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	31.78M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	41.85M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	31.78M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	41.16M	shares	Annual

Cash Flow Statement 175 line items

Line Item	Tag	Value	Unit	Period
Net loss attributable to Cohu	`NetIncomeLoss`	$-32.18M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-17.27M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-69.70M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-19.32M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-10.47M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-4.74M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-6.65M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$14.86M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-17.28M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-13.80M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-22.64M	USD	1 Quarter
Net income (loss) from noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00K	USD	Annual
Net income (loss) from noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-243.00K	USD	Annual
Net income (loss) from noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
(Gain) loss on disposal of discontinued operations (Note 14)	`DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax`	$-1.14M	USD	Annual
(Gain) loss on disposal of discontinued operations (Note 14)	`DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax`	-	USD	Annual
(Gain) loss on disposal of discontinued operations (Note 14)	`DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax`	$35.00K	USD	Annual
Interest capitalized associated with cloud computing implementation	`InterestCapitalizedAssociatedWithCloudComputingImplementation`	$124.00K	USD	Annual
Interest capitalized associated with cloud computing implementation	`InterestCapitalizedAssociatedWithCloudComputingImplementation`	-	USD	Annual
Interest capitalized associated with cloud computing implementation	`InterestCapitalizedAssociatedWithCloudComputingImplementation`	$168.00K	USD	Annual
Gain on divestiture of consolidated entity	`DeconsolidationGainOrLossAmount`	-	USD	Annual
Gain on divestiture of consolidated entity	`DeconsolidationGainOrLossAmount`	$149.00K	USD	Annual
Gain on divestiture of consolidated entity	`DeconsolidationGainOrLossAmount`	-	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	$268.00K	USD	Annual
Gain on extinguishment of debt	`GainsLossesOnExtinguishmentOfDebt`	-	USD	Annual
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	`ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill`	-	USD	Annual
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	`ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill`	$11.25M	USD	Annual
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	`ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill`	-	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$52.75M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$58.87M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$26.05M	USD	Annual
Share-based compensation expense including restructuring charges	`SharebasedCompensationExpenseIncludingRestructuringCharges`	$14.15M	USD	Annual
Share-based compensation expense including restructuring charges	`SharebasedCompensationExpenseIncludingRestructuringCharges`	$14.23M	USD	Annual
Share-based compensation expense including restructuring charges	`SharebasedCompensationExpenseIncludingRestructuringCharges`	$18.28M	USD	Annual
Amortization of inventory step-up and inventory related charges	`AmortizationOfInventoryStepupAndInventoryRelatedCharges`	$24.18M	USD	Annual
Amortization of inventory step-up and inventory related charges	`AmortizationOfInventoryStepupAndInventoryRelatedCharges`	$8.35M	USD	Annual
Amortization of inventory step-up and inventory related charges	`AmortizationOfInventoryStepupAndInventoryRelatedCharges`	$3.73M	USD	Annual
Amortization of debt discounts and issuance costs	`AmortizationOfFinancingCostsAndDiscounts`	$1.18M	USD	Annual
Amortization of debt discounts and issuance costs	`AmortizationOfFinancingCostsAndDiscounts`	$1.11M	USD	Annual
Amortization of debt discounts and issuance costs	`AmortizationOfFinancingCostsAndDiscounts`	-	USD	Annual
Accrued retiree benefits	`PensionAndOtherPostretirementBenefitExpense`	$-560.00K	USD	Annual
Accrued retiree benefits	`PensionAndOtherPostretirementBenefitExpense`	$1.02M	USD	Annual
Accrued retiree benefits	`PensionAndOtherPostretirementBenefitExpense`	$1.68M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-5.38M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-5.30M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-8.21M	USD	Annual
Adjustment to contingent consideration liability	`BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1`	$657.00K	USD	Annual
Adjustment to contingent consideration liability	`BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1`	-	USD	Annual
Adjustment to contingent consideration liability	`BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1`	-	USD	Annual
Changes in other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-285.00K	USD	Annual
Changes in other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$3.04M	USD	Annual
Changes in other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$2.96M	USD	Annual
Amortization of cloud-based software implementation costs	`CapitalizedComputerSoftwareAmortization1`	-	USD	Annual
Amortization of cloud-based software implementation costs	`CapitalizedComputerSoftwareAmortization1`	$1.19M	USD	Annual
Amortization of cloud-based software implementation costs	`CapitalizedComputerSoftwareAmortization1`	-	USD	Annual
(Gain) loss from sale of property, plant and equipment	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$4.17M	USD	Annual
(Gain) loss from sale of property, plant and equipment	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-293.00K	USD	Annual
(Gain) loss from sale of property, plant and equipment	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-173.00K	USD	Annual
Changes in other accrued liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$91.00K	USD	Annual
Changes in other accrued liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$198.00K	USD	Annual
Changes in other accrued liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$5.35M	USD	Annual
Customer advances	`IncreaseDecreaseInContractWithCustomerLiability`	$2.51M	USD	Annual
Customer advances	`IncreaseDecreaseInContractWithCustomerLiability`	$2.19M	USD	Annual
Customer advances	`IncreaseDecreaseInContractWithCustomerLiability`	$11.55M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$20.21M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-21.15M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-5.79M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-2.04M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-26.00K	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$14.98M	USD	Annual
Accrued compensation, warranty and other liabilities	`IncreaseDecreaseInAccruedCompensationWarrantyAndOtherLiabilities`	$1.47M	USD	Annual
Accrued compensation, warranty and other liabilities	`IncreaseDecreaseInAccruedCompensationWarrantyAndOtherLiabilities`	$4.68M	USD	Annual
Accrued compensation, warranty and other liabilities	`IncreaseDecreaseInAccruedCompensationWarrantyAndOtherLiabilities`	$-9.40M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-3.12M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-7.10M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$15.06M	USD	Annual
Deferred profit	`IncreaseDecreaseInDeferredProfit`	$871.00K	USD	Annual
Deferred profit	`IncreaseDecreaseInDeferredProfit`	$37.00K	USD	Annual
Deferred profit	`IncreaseDecreaseInDeferredProfit`	$997.00K	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$-148.00K	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$6.00M	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$-1.15M	USD	Annual
Income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$4.04M	USD	Annual
Income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-10.72M	USD	Annual
Income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-2.09M	USD	Annual
Operating lease right-of-use assets	`IncreaseDecreaseInOperatingLeaseRightOfUseAssets`	$-7.16M	USD	Annual
Operating lease right-of-use assets	`IncreaseDecreaseInOperatingLeaseRightOfUseAssets`	-	USD	Annual
Operating lease right-of-use assets	`IncreaseDecreaseInOperatingLeaseRightOfUseAssets`	$-6.83M	USD	Annual
Current and long-term operating lease liabilities	`IncreaseDecreaseInCurrentAndNoncurrentOperatingLeaseLiabilities`	-	USD	Annual
Current and long-term operating lease liabilities	`IncreaseDecreaseInCurrentAndNoncurrentOperatingLeaseLiabilities`	$-6.08M	USD	Annual
Current and long-term operating lease liabilities	`IncreaseDecreaseInCurrentAndNoncurrentOperatingLeaseLiabilities`	$-6.44M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$49.73M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$34.44M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$17.27M	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$4.97M	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$18.66M	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$18.00M	USD	Annual
Net cash received from sale of land, facility and assets	`SaleLeasebackTransactionNetProceedsInvestingActivities`	$1.77M	USD	Annual
Net cash received from sale of land, facility and assets	`SaleLeasebackTransactionNetProceedsInvestingActivities`	$1.00M	USD	Annual
Net cash received from sale of land, facility and assets	`SaleLeasebackTransactionNetProceedsInvestingActivities`	$17.02M	USD	Annual
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$38.70M	USD	Annual
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$315.00K	USD	Annual
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$19.70M	USD	Annual
Payment for purchase of Xcerra, net of cash received	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Payment for purchase of Xcerra, net of cash received	`PaymentsToAcquireBusinessesNetOfCashAcquired`	-	USD	Annual
Payment for purchase of Xcerra, net of cash received	`PaymentsToAcquireBusinessesNetOfCashAcquired`	$339.12M	USD	Annual
Sales and maturities of short-term investments	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	-	USD	Annual
Sales and maturities of short-term investments	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	-	USD	Annual
Sales and maturities of short-term investments	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$59.47M	USD	Annual
Net cash received from sale of fixtures services business	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$2.98M	USD	Annual
Net cash received from sale of fixtures services business	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	-	USD	Annual
Net cash received from sale of fixtures services business	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	-	USD	Annual
Net cash used in investing activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-18.36M	USD	Annual
Net cash used in investing activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-16.55M	USD	Annual
Net cash used in investing activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-322.31M	USD	Annual
Cash dividends paid	`PaymentsOfDividendsCommonStock`	$9.83M	USD	Annual
Cash dividends paid	`PaymentsOfDividendsCommonStock`	$4.97M	USD	Annual
Cash dividends paid	`PaymentsOfDividendsCommonStock`	$6.95M	USD	Annual
Proceeds from revolving line of credit and construction loans	`ProceedsFromConstructionLoansPayable`	$5.48M	USD	Annual
Proceeds from revolving line of credit and construction loans	`ProceedsFromConstructionLoansPayable`	$5.88M	USD	Annual
Proceeds from revolving line of credit and construction loans	`ProceedsFromConstructionLoansPayable`	-	USD	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	$2.32M	USD	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	$3.82M	USD	Annual
Repayments of long-term debt	`RepaymentsOfLongTermDebt`	$41.06M	USD	Annual
Net issuance (repurchases) of stock, including awards settled in cash	`ProceedsFromRepurchaseOfEquity`	$-8.98M	USD	Annual
Net issuance (repurchases) of stock, including awards settled in cash	`ProceedsFromRepurchaseOfEquity`	$-16.00K	USD	Annual
Net issuance (repurchases) of stock, including awards settled in cash	`ProceedsFromRepurchaseOfEquity`	$2.08M	USD	Annual
Proceeds from Term Loan B	`ProceedsFromIssuanceOfLongTermDebt`	$348.25M	USD	Annual
Proceeds from Term Loan B	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Proceeds from Term Loan B	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$7.07M	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Payment of contingent consideration	`PaymentForContingentConsiderationLiabilityFinancingActivities`	-	USD	Annual
Payment of contingent consideration	`PaymentForContingentConsiderationLiabilityFinancingActivities`	-	USD	Annual
Payment of contingent consideration	`PaymentForContingentConsiderationLiabilityFinancingActivities`	$823.00K	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-8.18M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-38.07M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$322.11M	USD	Annual
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$129.00K	USD	Annual
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$-3.60M	USD	Annual
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$-1.53M	USD	Annual
Net increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$30.64M	USD	Annual
Net increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-6.57M	USD	Annual
Net increase (decrease) in cash and cash equivalents	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$-8.99M	USD	Annual
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$164.92M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$149.36M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$155.93M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$134.29M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$164.92M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$149.36M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$155.93M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$134.29M	USD	Point-in-time
Cash held by discontinued operations (Note 14)	`DisposalGroupIncludingDiscontinuedOperationCash`	$461.00K	USD	Point-in-time
Cash held by discontinued operations (Note 14)	`DisposalGroupIncludingDiscontinuedOperationCash`	-	USD	Point-in-time
Cash held by discontinued operations (Note 14)	`DisposalGroupIncludingDiscontinuedOperationCash`	$736.00K	USD	Point-in-time
Cash and cash equivalents at end of year from continuing operations	`CashAndCashEquivalentsAtCarryingValue`	$164.46M	USD	Point-in-time
Cash and cash equivalents at end of year from continuing operations	`CashAndCashEquivalentsAtCarryingValue`	$149.36M	USD	Point-in-time
Cash and cash equivalents at end of year from continuing operations	`CashAndCashEquivalentsAtCarryingValue`	$155.19M	USD	Point-in-time
Cash paid for income taxes	`IncomeTaxesPaidNet`	$14.94M	USD	Annual
Cash paid for income taxes	`IncomeTaxesPaidNet`	$6.24M	USD	Annual
Cash paid for income taxes	`IncomeTaxesPaidNet`	$5.77M	USD	Annual
Cash paid for interest	`InterestPaidNet`	$16.32M	USD	Annual
Cash paid for interest	`InterestPaidNet`	$14.85M	USD	Annual
Cash paid for interest	`InterestPaidNet`	$4.98M	USD	Annual
Dividends declared but not yet paid	`DividendsPayableCurrentAndNoncurrent`	$2.48M	USD	Point-in-time
Dividends declared but not yet paid	`DividendsPayableCurrentAndNoncurrent`	$2.44M	USD	Point-in-time
Dividends declared but not yet paid	`DividendsPayableCurrentAndNoncurrent`	-	USD	Point-in-time
Property, plant and equipment purchases included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$1.06M	USD	Annual
Property, plant and equipment purchases included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$599.00K	USD	Annual
Property, plant and equipment purchases included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$1.60M	USD	Annual
Inventory capitalized as capital assets	`InventoryCapitalizedAsPropertyPlantAndEquipment`	$300.00K	USD	Annual
Inventory capitalized as capital assets	`InventoryCapitalizedAsPropertyPlantAndEquipment`	$1.05M	USD	Annual
Inventory capitalized as capital assets	`InventoryCapitalizedAsPropertyPlantAndEquipment`	$857.00K	USD	Annual

Stockholders Equity 48 line items

Line Item	Tag	Value	Unit	Period
Cash dividend, per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.24	USD	Annual
Cash dividend, per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.24	USD	Annual
Cash dividend, per share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.06	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$289.09M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$483.07M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$545.94M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$512.29M	USD	Point-in-time
Net income (loss)	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$-32.42M	USD	Annual
Net income (loss)	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$-13.80M	USD	Annual
Net income (loss)	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$-69.69M	USD	Annual
Changes in cumulative translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$27.32M	USD	Annual
Changes in cumulative translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-8.90M	USD	Annual
Changes in cumulative translation adjustment	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$-7.53M	USD	Annual
Changes in cumulative translation adjustment, attributable to parent	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-7.52M	USD	Annual
Changes in cumulative translation adjustment, attributable to parent	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$27.32M	USD	Annual
Changes in cumulative translation adjustment, attributable to parent	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-8.90M	USD	Annual
Adjustments related to postretirement benefits, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-2.38M	USD	Annual
Adjustments related to postretirement benefits, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-805.00K	USD	Annual
Adjustments related to postretirement benefits, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$628.00K	USD	Annual
Changes in unrealized gains and losses on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$7.00K	USD	Annual
Changes in unrealized gains and losses on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	-	USD	Annual
Changes in unrealized gains and losses on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	-	USD	Annual
Cash dividends	`DividendsCommonStockCash`	$2.49M	USD	Annual
Cash dividends	`DividendsCommonStockCash`	$7.69M	USD	Annual
Cash dividends	`DividendsCommonStockCash`	$9.87M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$680.00K	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$409.00K	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$1.10M	USD	Annual
Shares issued under ESPP	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$2.35M	USD	Annual
Shares issued under ESPP	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$1.52M	USD	Annual
Shares issued under ESPP	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$3.27M	USD	Annual
Shares issued for restricted stock units vested	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	-	USD	Annual
Shares issued for restricted stock units vested	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	-	USD	Annual
Shares issued for restricted stock units vested	`StockIssuedDuringPeriodValueRestrictedStockAwardGross`	-	USD	Annual
Repurchase and retirement of stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$2.77M	USD	Annual
Repurchase and retirement of stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$11.60M	USD	Annual
Repurchase and retirement of stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$2.81M	USD	Annual
Noncontrolling interest	`MinorityInterestPeriodIncreaseDecrease`	$-299.00K	USD	Annual
Noncontrolling interest	`MinorityInterestPeriodIncreaseDecrease`	-	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$18.28M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$14.15M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$14.23M	USD	Annual
Shares issued for acquisition of Xcerra	`StockIssuedDuringPeriodValueAcquisitions`	$295.42M	USD	Annual
Divestiture of interest in consolidated entity	`NoncontrollingInterestDecreaseFromDeconsolidation`	$356.00K	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$289.09M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$483.07M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$545.94M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$512.29M	USD	Point-in-time

Comprehensive Income 52 line items

Line Item	Tag	Value	Unit	Period
Net loss	`ProfitLoss`	$-32.42M	USD	Annual
Net loss	`ProfitLoss`	$-4.74M	USD	1 Quarter
Net loss	`ProfitLoss`	$-19.36M	USD	1 Quarter
Net loss	`ProfitLoss`	$-69.69M	USD	Annual
Net loss	`ProfitLoss`	$14.86M	USD	1 Quarter
Net loss	`ProfitLoss`	$-17.28M	USD	1 Quarter
Net loss	`ProfitLoss`	$-10.33M	USD	1 Quarter
Net loss	`ProfitLoss`	$-6.65M	USD	1 Quarter
Net loss	`ProfitLoss`	$-22.69M	USD	1 Quarter
Net loss	`ProfitLoss`	$-17.32M	USD	1 Quarter
Net loss	`ProfitLoss`	$-13.80M	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-243.00K	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-32.18M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-17.27M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-69.70M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-19.32M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-10.47M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-4.74M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-6.65M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$14.86M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-17.28M	USD	1 Quarter
Net loss attributable to Cohu	`NetIncomeLoss`	$-13.80M	USD	Annual
Net loss attributable to Cohu	`NetIncomeLoss`	$-22.64M	USD	1 Quarter
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-7.52M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$27.32M	USD	Annual
Foreign currency translation adjustments	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-8.90M	USD	Annual
Adjustments related to postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-2.38M	USD	Annual
Adjustments related to postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-805.00K	USD	Annual
Adjustments related to postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$628.00K	USD	Annual
Change in unrealized gain/loss on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$7.00K	USD	Annual
Change in unrealized gain/loss on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	-	USD	Annual
Change in unrealized gain/loss on investments	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	-	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-8.15M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$29.70M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-8.09M	USD	Annual
Other comprehensive income (loss) attributable to noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-5.00K	USD	Annual
Other comprehensive income (loss) attributable to noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-4.00K	USD	Annual
Other comprehensive income (loss) attributable to noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	Annual
Other comprehensive income (loss) attributable to Cohu	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$29.70M	USD	Annual
Other comprehensive income (loss) attributable to Cohu	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-8.09M	USD	Annual
Other comprehensive income (loss) attributable to Cohu	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$-8.15M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$15.90M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-40.52M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-77.84M	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$4.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-248.00K	USD	Annual
Comprehensive income (loss) attributable to Cohu	`ComprehensiveIncomeNetOfTax`	$-40.27M	USD	Annual
Comprehensive income (loss) attributable to Cohu	`ComprehensiveIncomeNetOfTax`	$15.90M	USD	Annual
Comprehensive income (loss) attributable to Cohu	`ComprehensiveIncomeNetOfTax`	$-77.85M	USD	Annual

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