10-K Filing

COHU INC CIK: 21535 FY 2019

Filing Information

Form Type	10-K
Accession Number	`0001437749-20-004691`
Period End Date	20191231
Filing Date	20200310
Fiscal Year	2019
Fiscal Period	FY
XBRL Instance	cohu-20191228.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 105 Income Statement 153 Cash Flow Statement 157 Stockholders Equity 42 Comprehensive Income 52

Balance Sheet 105 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
Preferred stock, shares authorized (in shares)	`PreferredStockSharesAuthorized`	1.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$155.19M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$134.29M	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`	$560.00K	USD	Point-in-time
Short-term investments	`AvailableForSaleSecuritiesCurrent`	$904.00K	USD	Point-in-time
Accounts receivable, net	`AccountsAndOtherReceivablesNetCurrent`	$127.92M	USD	Point-in-time
Accounts receivable, net	`AccountsAndOtherReceivablesNetCurrent`	$149.28M	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Inventories	`InventoryNet`	$139.31M	USD	Point-in-time
Inventories	`InventoryNet`	$130.71M	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`	40.76M	shares	Point-in-time
Prepaid expenses	`PrepaidExpenseCurrent`	$26.21M	USD	Point-in-time
Prepaid expenses	`PrepaidExpenseCurrent`	$17.48M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	41.40M	shares	Point-in-time
Other current assets	`OtherAssetsCurrent`	$1.68M	USD	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
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	40.76M	shares	Point-in-time
Assets held for sale	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	-	USD	Point-in-time
Assets held for sale	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	$827.00K	USD	Point-in-time
Current assets of discontinued operations (Note 13)	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$3.74M	USD	Point-in-time
Current assets of discontinued operations (Note 13)	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$3.50M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$485.24M	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`	$74.33M	USD	Point-in-time
Goodwill	`Goodwill`	$242.13M	USD	Point-in-time
Goodwill	`Goodwill`	$238.67M	USD	Point-in-time
Goodwill	`Goodwill`	$65.61M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$275.02M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$318.96M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$13.26M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$20.03M	USD	Point-in-time
Operating lease right of use assets	`OperatingLeaseRightOfUseAsset`	-	USD	Point-in-time
Operating lease right of use assets	`OperatingLeaseRightOfUseAsset`	$33.27M	USD	Point-in-time
Noncurrent assets of discontinued operations (Note 13)	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$115.00K	USD	Point-in-time
Noncurrent assets of discontinued operations (Note 13)	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$79.00K	USD	Point-in-time
Assets	`Assets`	$420.46M	USD	Point-in-time
Assets	`Assets`	$1.13B	USD	Point-in-time
Assets	`Assets`	$1.08B	USD	Point-in-time
Short-term borrowings	`ShortTermBankLoansAndNotesPayable`	$3.19M	USD	Point-in-time
Short-term borrowings	`ShortTermBankLoansAndNotesPayable`	$3.12M	USD	Point-in-time
Current installments of long-term debt	`LoansPayableToBankCurrent`	$3.32M	USD	Point-in-time
Current installments of long-term debt	`LoansPayableToBankCurrent`	$3.67M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$48.12M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$48.70M	USD	Point-in-time
Accrued compensation and benefits	`EmployeeRelatedLiabilitiesCurrent`	$29.40M	USD	Point-in-time
Accrued compensation and benefits	`EmployeeRelatedLiabilitiesCurrent`	$23.74M	USD	Point-in-time
Accrued warranty	`ProductWarrantyAccrualClassifiedCurrent`	$7.77M	USD	Point-in-time
Accrued warranty	`ProductWarrantyAccrualClassifiedCurrent`	$5.89M	USD	Point-in-time
Deferred profit	`DeferredProfit`	$7.64M	USD	Point-in-time
Deferred profit	`DeferredProfit`	$6.90M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$11.05M	USD	Point-in-time
Income taxes payable	`AccruedIncomeTaxesCurrent`	$3.89M	USD	Point-in-time
Other accrued liabilities	`OtherAccruedLiabilitiesCurrent`	$51.90M	USD	Point-in-time
Other accrued liabilities	`OtherAccruedLiabilitiesCurrent`	$50.05M	USD	Point-in-time
Current liabilities of discontinued operations (Note 13)	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$518.00K	USD	Point-in-time
Current liabilities of discontinued operations (Note 13)	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$599.00K	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$160.59M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$148.88M	USD	Point-in-time
Long-term debt	`LongTermLoansFromBank`	$346.04M	USD	Point-in-time
Long-term debt	`LongTermLoansFromBank`	$346.52M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$31.31M	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$38.94M	USD	Point-in-time
Long-term lease liabilities	`OperatingLeaseLiabilityNoncurrent`	$28.88M	USD	Point-in-time
Long-term lease liabilities	`OperatingLeaseLiabilityNoncurrent`	-	USD	Point-in-time
Accrued retirement benefits	`PostemploymentBenefitsLiabilityNoncurrent`	$21.93M	USD	Point-in-time
Accrued retirement benefits	`PostemploymentBenefitsLiabilityNoncurrent`	$19.74M	USD	Point-in-time
Noncurrent deferred gain on sale of facility	`DeferredGainOnSaleOfProperty`	$8.78M	USD	Point-in-time
Noncurrent deferred gain on sale of facility	`DeferredGainOnSaleOfProperty`	-	USD	Point-in-time
Noncurrent income tax liabilities	`AccruedIncomeTaxesNoncurrent`	$9.71M	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`	$4.26M	USD	Point-in-time
Noncurrent liabilities of discontinued operations (Note 13)	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	-	USD	Point-in-time
Noncurrent liabilities of discontinued operations (Note 13)	`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, 41,395 shares issued and outstanding in 2019 and 40,763 shares in 2018	`CommonStockValue`	$41.40M	USD	Point-in-time
Common stock, $1 par value; 60,000 shares authorized, 41,395 shares issued and outstanding in 2019 and 40,763 shares in 2018	`CommonStockValue`	$40.76M	USD	Point-in-time
Paid-in capital	`AdditionalPaidInCapitalCommonStock`	$433.19M	USD	Point-in-time
Paid-in capital	`AdditionalPaidInCapitalCommonStock`	$419.69M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$42.52M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$111.67M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-25.88M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-34.03M	USD	Point-in-time
Total Cohu stockholders' equity	`StockholdersEquity`	$483.07M	USD	Point-in-time
Total Cohu stockholders' equity	`StockholdersEquity`	$546.24M	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	$-299.00K	USD	Point-in-time
Noncontrolling interest	`MinorityInterest`	-	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$483.07M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$545.94M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$289.09M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$235.47M	USD	Point-in-time
LiabilitiesAndStockholdersEquity	`LiabilitiesAndStockholdersEquity`	$1.08B	USD	Point-in-time
LiabilitiesAndStockholdersEquity	`LiabilitiesAndStockholdersEquity`	$1.13B	USD	Point-in-time

Income Statement 153 line items

Line Item	Tag	Value	Unit	Period
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$583.33M	USD	Annual
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$99.82M	USD	1 Quarter
Cost of sales, Amortization	`CostOfGoodsAndServicesSoldAmortization`	$2.69M	USD	Annual
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$150.01M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$95.15M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$142.01M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$143.50M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$451.77M	USD	Annual
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$170.64M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$352.70M	USD	Annual
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$86.16M	USD	1 Quarter
Net sales	`RevenueFromContractWithCustomerIncludingAssessedTax`	$147.81M	USD	1 Quarter
Cost of sales, Amortization	`CostOfGoodsAndServicesSoldAmortization`	$30.13M	USD	Annual
Cost of sales, Amortization	`CostOfGoodsAndServicesSoldAmortization`	$13.59M	USD	Annual
Cost of sales (1)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$292.46M	USD	Annual
Cost of sales (1)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$353.50M	USD	Annual
Cost of sales (1)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$209.30M	USD	Annual
Research and development	`ResearchAndDevelopmentExpense`	$40.74M	USD	Annual
Research and development	`ResearchAndDevelopmentExpense`	$86.15M	USD	Annual
Research and development	`ResearchAndDevelopmentExpense`	$56.43M	USD	Annual
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$60.74M	USD	Annual
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$142.94M	USD	Annual
Selling, general and administrative	`SellingGeneralAndAdministrativeExpense`	$96.75M	USD	Annual
Amortization of purchased intangible assets	`AmortizationOfIntangibleAssets`	$17.20M	USD	Annual
Amortization of purchased intangible assets	`AmortizationOfIntangibleAssets`	$39.59M	USD	Annual
Amortization of purchased intangible assets	`AmortizationOfIntangibleAssets`	$4.21M	USD	Annual
Restructuring charges (Note 5)	`RestructuringCharges`	$18.70M	USD	1 Quarter
Restructuring charges (Note 5)	`RestructuringCharges`	$18.70M	USD	Annual
Restructuring charges (Note 5)	`RestructuringCharges`	$13.48M	USD	Annual
Restructuring charges (Note 5)	`RestructuringCharges`	$8.50M	USD	1 Quarter
Restructuring charges (Note 5)	`RestructuringCharges`	-	USD	Annual
CostsAndExpenses	`CostsAndExpenses`	$314.98M	USD	Annual
CostsAndExpenses	`CostsAndExpenses`	$481.55M	USD	Annual
CostsAndExpenses	`CostsAndExpenses`	$635.66M	USD	Annual
Income (loss) from operations	`OperatingIncomeLoss`	$-29.78M	USD	Annual
Income (loss) from operations	`OperatingIncomeLoss`	$37.73M	USD	Annual
Income (loss) from operations	`OperatingIncomeLoss`	$-52.33M	USD	Annual
Interest expense	`InterestExpense`	$4.98M	USD	Annual
Interest expense	`InterestExpense`	$54.00K	USD	Annual
Interest expense	`InterestExpense`	$20.56M	USD	Annual
Interest income	`InvestmentIncomeInterestAndDividend`	$671.00K	USD	Annual
Interest income	`InvestmentIncomeInterestAndDividend`	$764.00K	USD	Annual
Interest income	`InvestmentIncomeInterestAndDividend`	$1.19M	USD	Annual
Foreign transaction gain (loss) and other	`ForeignCurrencyTransactionGainLossBeforeTax`	$-2.98M	USD	Annual
Foreign transaction gain (loss) and other	`ForeignCurrencyTransactionGainLossBeforeTax`	$1.66M	USD	Annual
Foreign transaction gain (loss) and other	`ForeignCurrencyTransactionGainLossBeforeTax`	$43.00K	USD	Annual
Income (loss) from continuing operations before taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-72.08M	USD	Annual
Income (loss) from continuing operations before taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-31.91M	USD	Annual
Income (loss) from continuing operations before taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$35.37M	USD	Annual
Income tax provision (benefit)	`IncomeTaxExpenseBenefit`	$631.00K	USD	Annual
Income tax provision (benefit)	`IncomeTaxExpenseBenefit`	$-3.08M	USD	Annual
Income tax provision (benefit)	`IncomeTaxExpenseBenefit`	$2.24M	USD	Annual
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$-16.28M	USD	1 Quarter
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$-10.48M	USD	1 Quarter
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$-22.85M	USD	1 Quarter
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$-69.00M	USD	Annual
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$8.12M	USD	1 Quarter
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$-19.38M	USD	1 Quarter
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$33.12M	USD	Annual
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$-32.54M	USD	Annual
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$11.65M	USD	1 Quarter
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$-57.12M	USD	1 Quarter
Income (loss) from continuing operations	`IncomeLossFromContinuingOperations`	$4.80M	USD	1 Quarter
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-278.00K	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$119.00K	USD	Annual
Income (loss) from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-697.00K	USD	Annual
Net income (loss)	`ProfitLoss`	$32.84M	USD	Annual
Net income (loss)	`ProfitLoss`	$-57.00M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$11.65M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-10.33M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$8.12M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-22.69M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-17.32M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-69.69M	USD	Annual
Net income (loss)	`ProfitLoss`	$4.80M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-19.36M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-32.42M	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	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 Cohu	`NetIncomeLoss`	$8.12M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$11.65M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-22.64M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$32.84M	USD	Annual
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-19.32M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-56.75M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-10.47M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$4.80M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-17.27M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-32.18M	USD	Annual
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-69.70M	USD	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	31.78M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	27.84M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	41.16M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	31.78M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	41.16M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	28.92M	shares	Annual
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-1.68	USD	Annual
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$1.19	USD	Annual
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.17	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.47	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.25	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.39	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.40	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-0.56	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-1.40	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$-1.02	USD	Annual
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.28	USD	1 Quarter
Income (loss) from discontinued operations (in dollars per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare`	$-0.01	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
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`	-	USD	Annual
Net income (loss) attributable to noncontrolling interest (in dollars per share)	`NetIncomeLossAttributableToNoncontrollingInterestPerBasicShare`	$0.01	USD	Annual
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.55	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$0.40	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-1.01	USD	Annual
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$0.28	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.25	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.42	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$0.17	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-0.47	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$1.18	USD	Annual
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-1.40	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareBasic`	$-1.69	USD	Annual
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.47	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.56	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.39	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-1.02	USD	Annual
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.39	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$1.15	USD	Annual
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-1.68	USD	Annual
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-0.25	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.16	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.28	USD	1 Quarter
Income (loss) from continuing operations before non-controlling interest (in dollars per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$-1.40	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`	$-0.01	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`	-	USD	Annual
Net income (loss) attributable to noncontrolling interest (in dollars per share)	`NetIncomeLossAttributableToNoncontrollingInterestPerDilutedShare`	$0.01	USD	Annual
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.25	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$0.28	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-1.01	USD	Annual
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$0.16	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.55	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$1.14	USD	Annual
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-1.40	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.42	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-1.69	USD	Annual
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$0.39	USD	1 Quarter
Net income (loss) attributable to Cohu (in dollars per share)	`EarningsPerShareDiluted`	$-0.47	USD	1 Quarter

Cash Flow Statement 157 line items

Line Item	Tag	Value	Unit	Period
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$8.12M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$11.65M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-22.64M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$32.84M	USD	Annual
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-19.32M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-56.75M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-10.47M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$4.80M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-17.27M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-32.18M	USD	Annual
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-69.70M	USD	Annual
Net income (loss) from noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net income (loss) from noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$8.00K	USD	Annual
Net income (loss) from noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$-243.00K	USD	Annual
Loss on impairment and disposal of segments held for sale (Note 13)	`DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax`	$-278.00K	USD	Annual
Loss on impairment and disposal of segments held for sale (Note 13)	`DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax`	-	USD	Annual
Loss on impairment and disposal of segments held for sale (Note 13)	`DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax`	$-1.14M	USD	Annual
Interest capitalized associated with cloud computing implementation	`InterestCapitalizedAssociatedWithCloudComputingImplementation`	$168.00K	USD	Annual
Interest capitalized associated with cloud computing implementation	`InterestCapitalizedAssociatedWithCloudComputingImplementation`	-	USD	Annual
Interest capitalized associated with cloud computing implementation	`InterestCapitalizedAssociatedWithCloudComputingImplementation`	-	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
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$26.05M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$58.87M	USD	Annual
Depreciation and amortization	`DepreciationDepletionAndAmortization`	$9.20M	USD	Annual
Share-based compensation expense including restructuring charges	`SharebasedCompensationExpenseIncludingRestructuringCharges`	$14.15M	USD	Annual
Share-based compensation expense including restructuring charges	`SharebasedCompensationExpenseIncludingRestructuringCharges`	$7.01M	USD	Annual
Share-based compensation expense including restructuring charges	`SharebasedCompensationExpenseIncludingRestructuringCharges`	$18.28M	USD	Annual
Amortization of inventory step-up and inventory related charges	`AmortizationOfInventoryStepupAndInventoryRelatedCharges`	$1.40M	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`	$24.18M	USD	Annual
Amortization of debt discounts and issuance costs	`AmortizationOfFinancingCostsAndDiscounts`	-	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`	$322.00K	USD	Annual
Accrued retiree benefits	`PensionAndOtherPostretirementBenefitExpense`	$-560.00K	USD	Annual
Accrued retiree benefits	`PensionAndOtherPostretirementBenefitExpense`	$1.02M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-8.21M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-5.38M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-3.79M	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`	$1.42M	USD	Annual
Changes in other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$2.96M	USD	Annual
Changes in other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$3.04M	USD	Annual
Changes in other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-1.50M	USD	Annual
(Gain) loss on disposal of fixed assets	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-173.00K	USD	Annual
(Gain) loss on disposal of fixed assets	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$42.00K	USD	Annual
(Gain) loss on disposal of fixed assets	`GainLossOnSalesOfAssetsAndAssetImpairmentCharges`	$-293.00K	USD	Annual
Changes in other accrued liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$198.00K	USD	Annual
Changes in other accrued liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$5.35M	USD	Annual
Changes in other accrued liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$979.00K	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$3.26M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-5.79M	USD	Annual
Accounts receivable	`IncreaseDecreaseInAccountsReceivable`	$-21.15M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-26.00K	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$12.20M	USD	Annual
Inventories	`IncreaseDecreaseInInventories`	$-2.04M	USD	Annual
Accrued compensation, warranty and other liabilities	`IncreaseDecreaseInAccruedCompensationWarrantyAndOtherLiabilities`	$937.00K	USD	Annual
Accrued compensation, warranty and other liabilities	`IncreaseDecreaseInAccruedCompensationWarrantyAndOtherLiabilities`	$3.98M	USD	Annual
Accrued compensation, warranty and other liabilities	`IncreaseDecreaseInAccruedCompensationWarrantyAndOtherLiabilities`	$2.14M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-7.10M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-3.12M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$4.16M	USD	Annual
Deferred profit	`IncreaseDecreaseInDeferredProfit`	$-442.00K	USD	Annual
Deferred profit	`IncreaseDecreaseInDeferredProfit`	$997.00K	USD	Annual
Deferred profit	`IncreaseDecreaseInDeferredProfit`	$37.00K	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$6.00M	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$-148.00K	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$-952.00K	USD	Annual
Income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$4.04M	USD	Annual
Income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-10.72M	USD	Annual
Income taxes payable	`IncreaseDecreaseInAccruedIncomeTaxesPayable`	$-1.52M	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`	-	USD	Annual
Current and long-term operating lease liabilities	`IncreaseDecreaseInCurrentAndNoncurrentOperatingLeaseLiabilities`	$-6.08M	USD	Annual
Current and long-term operating lease liabilities	`IncreaseDecreaseInCurrentAndNoncurrentOperatingLeaseLiabilities`	-	USD	Annual
Current and long-term operating lease liabilities	`IncreaseDecreaseInCurrentAndNoncurrentOperatingLeaseLiabilities`	-	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$17.27M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$34.44M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$39.75M	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$4.97M	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$18.00M	USD	Annual
Purchases of property, plant and equipment	`PaymentsToAcquirePropertyPlantAndEquipment`	$6.09M	USD	Annual
Net cash received from sale of land, facility and assets	`SaleLeasebackTransactionNetProceedsInvestingActivities`	$104.00K	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`	$1.77M	USD	Annual
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$37.01M	USD	Annual
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$38.70M	USD	Annual
Purchases of short-term investments	`PaymentsToAcquireShortTermInvestments`	$315.00K	USD	Annual
Sales and maturities of short-term investments	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$59.47M	USD	Annual
Sales and maturities of short-term investments	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	$47.67M	USD	Annual
Sales and maturities of short-term investments	`ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities`	-	USD	Annual
Net cash used in investing activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-16.55M	USD	Annual
Net cash used in investing activities	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-7.04M	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`	$6.58M	USD	Annual
Cash dividends paid	`PaymentsOfDividendsCommonStock`	$6.95M	USD	Annual
Proceeds from construction loan	`ProceedsFromConstructionLoansPayable`	-	USD	Annual
Proceeds from construction loan	`ProceedsFromConstructionLoansPayable`	$5.48M	USD	Annual
Proceeds from construction loan	`ProceedsFromConstructionLoansPayable`	-	USD	Annual
Repayments of long-term debt	`ProceedsFromRepaymentsOfBankDebt`	$-1.63M	USD	Annual
Repayments of long-term debt	`ProceedsFromRepaymentsOfBankDebt`	$-3.82M	USD	Annual
Repayments of long-term debt	`ProceedsFromRepaymentsOfBankDebt`	$-2.32M	USD	Annual
Issuance (repurchases) of common stock, net including awards settled in cash	`ProceedsFromRepurchaseOfEquity`	$-16.00K	USD	Annual
Issuance (repurchases) of common stock, net including awards settled in cash	`ProceedsFromRepurchaseOfEquity`	$10.35M	USD	Annual
Issuance (repurchases) of common stock, net including awards settled in cash	`ProceedsFromRepurchaseOfEquity`	$-8.98M	USD	Annual
Proceeds from Term B Loan	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Proceeds from Term B Loan	`ProceedsFromIssuanceOfLongTermDebt`	$348.25M	USD	Annual
Proceeds from Term B Loan	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	-	USD	Annual
Payment of debt issuance costs	`PaymentsOfDebtIssuanceCosts`	$7.07M	USD	Annual
Payment of contingent consideration	`PaymentForContingentConsiderationLiabilityFinancingActivities`	-	USD	Annual
Payment of contingent consideration	`PaymentForContingentConsiderationLiabilityFinancingActivities`	$823.00K	USD	Annual
Payment of contingent consideration	`PaymentForContingentConsiderationLiabilityFinancingActivities`	-	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$2.15M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$322.11M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-8.18M	USD	Annual
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-1.53M	USD	Annual
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	$-3.60M	USD	Annual
Effect of exchange rate changes on cash and cash equivalents	`EffectOfExchangeRateOnCashAndCashEquivalents`	$3.39M	USD	Annual
Net increase (decrease) in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-8.99M	USD	Annual
Net increase (decrease) in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$30.64M	USD	Annual
Net increase (decrease) in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$38.24M	USD	Annual
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$155.93M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$164.92M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$134.29M	USD	Point-in-time
Cash and cash equivalents at beginning of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$96.05M	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`	$164.92M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$134.29M	USD	Point-in-time
Cash and cash equivalents at end of year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations`	$96.05M	USD	Point-in-time
Cash held by discontinued operations (Note 13)	`DisposalGroupIncludingDiscontinuedOperationCash`	$736.00K	USD	Point-in-time
Cash held by discontinued operations (Note 13)	`DisposalGroupIncludingDiscontinuedOperationCash`	-	USD	Point-in-time
Cash held by discontinued operations (Note 13)	`DisposalGroupIncludingDiscontinuedOperationCash`	$461.00K	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`	$155.19M	USD	Point-in-time
Cash and cash equivalents at end of year from continuing operations	`CashAndCashEquivalentsAtCarryingValue`	$134.29M	USD	Point-in-time
Cash paid during the year for income taxes	`IncomeTaxesPaidNet`	$6.24M	USD	Annual
Cash paid during the year for income taxes	`IncomeTaxesPaidNet`	$14.94M	USD	Annual
Cash paid during the year for income taxes	`IncomeTaxesPaidNet`	$7.09M	USD	Annual
Cash paid for interest	`InterestPaidNet`	$4.98M	USD	Annual
Cash paid for interest	`InterestPaidNet`	$14.85M	USD	Annual
Cash paid for interest	`InterestPaidNet`	-	USD	Annual
Dividends declared but not yet paid	`DividendsPayableCurrentAndNoncurrent`	$2.48M	USD	Point-in-time
Dividends declared but not yet paid	`DividendsPayableCurrentAndNoncurrent`	$1.71M	USD	Point-in-time
Dividends declared but not yet paid	`DividendsPayableCurrentAndNoncurrent`	$2.44M	USD	Point-in-time
Property, plant and equipment purchases included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$1.60M	USD	Annual
Property, plant and equipment purchases included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$260.00K	USD	Annual
Property, plant and equipment purchases included in accounts payable	`CapitalExpendituresIncurredButNotYetPaid`	$599.00K	USD	Annual
Inventory capitalized as capital assets	`InventoryCapitalizedAsPropertyPlantAndEquipment`	$300.00K	USD	Annual
Inventory capitalized as capital assets	`InventoryCapitalizedAsPropertyPlantAndEquipment`	$190.00K	USD	Annual
Inventory capitalized as capital assets	`InventoryCapitalizedAsPropertyPlantAndEquipment`	$857.00K	USD	Annual

Stockholders Equity 42 line items

Line Item	Tag	Value	Unit	Period
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$483.07M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$545.94M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$289.09M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$235.47M	USD	Point-in-time
Net income (loss)	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$-32.42M	USD	Annual
Net income (loss)	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$32.84M	USD	Annual
Net income (loss)	`NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest`	$-69.69M	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	`OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax`	$11.35M	USD	Annual
Adjustments related to postretirement benefits, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.25M	USD	Annual
Adjustments related to postretirement benefits, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$628.00K	USD	Annual
Adjustments related to postretirement benefits, net of tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-805.00K	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`	$-2.00K	USD	Annual
Changes in unrealized gains and losses on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	-	USD	Annual
Cash dividends - $0.24 per share	`DividendsCommonStockCash`	$9.87M	USD	Annual
Cash dividends - $0.24 per share	`DividendsCommonStockCash`	$6.68M	USD	Annual
Cash dividends - $0.24 per share	`DividendsCommonStockCash`	$7.69M	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$409.00K	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$680.00K	USD	Annual
Exercise of stock options	`StockIssuedDuringPeriodValueStockOptionsExercised`	$12.78M	USD	Annual
Shares issued under ESPP	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$1.24M	USD	Annual
Shares issued under ESPP	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$1.52M	USD	Annual
Shares issued under ESPP	`StockIssuedDuringPeriodValueEmployeeStockPurchasePlan`	$2.35M	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`	$11.60M	USD	Annual
Repurchase and retirement of stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$2.77M	USD	Annual
Repurchase and retirement of stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$3.67M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$18.28M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$7.01M	USD	Annual
Share-based compensation expense	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$14.15M	USD	Annual
Noncontrolling interest	`MinorityInterestPeriodIncreaseDecrease`	-	USD	Annual
Noncontrolling interest	`MinorityInterestPeriodIncreaseDecrease`	$-299.00K	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`	$483.07M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$545.94M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$289.09M	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$235.47M	USD	Point-in-time

Comprehensive Income 52 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$32.84M	USD	Annual
Net income (loss)	`ProfitLoss`	$-57.00M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$11.65M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-10.33M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$8.12M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-22.69M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-17.32M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-69.69M	USD	Annual
Net income (loss)	`ProfitLoss`	$4.80M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-19.36M	USD	1 Quarter
Net income (loss)	`ProfitLoss`	$-32.42M	USD	Annual
Net income (loss) attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	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 Cohu	`NetIncomeLoss`	$8.12M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$11.65M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-22.64M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$32.84M	USD	Annual
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-19.32M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-56.75M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-10.47M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$4.80M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-17.27M	USD	1 Quarter
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-32.18M	USD	Annual
Net income (loss) attributable to Cohu	`NetIncomeLoss`	$-69.70M	USD	Annual
Foreign currency translation adjustments, net of tax	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-8.90M	USD	Annual
Foreign currency translation adjustments, net of tax	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$11.35M	USD	Annual
Foreign currency translation adjustments, net of tax	`OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent`	$-7.52M	USD	Annual
Adjustments related to postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.25M	USD	Annual
Adjustments related to postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$628.00K	USD	Annual
Adjustments related to postretirement benefits	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-805.00K	USD	Annual
Change in unrealized gain/loss on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$7.00K	USD	Annual
Change in unrealized gain/loss on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	$-2.00K	USD	Annual
Change in unrealized gain/loss on investments, net of tax	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax`	-	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-8.15M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$10.10M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-8.09M	USD	Annual
Other comprehensive income (loss) attributable to noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	-	USD	Annual
Other comprehensive income (loss) attributable to noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-4.00K	USD	Annual
Other comprehensive income (loss) attributable to noncontrolling interest	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest`	$-5.00K	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
Other comprehensive income (loss) attributable to Cohu	`OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent`	$10.10M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-77.84M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$42.94M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-40.52M	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$4.00K	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	-	USD	Annual
Comprehensive income (loss) attributable to noncontrolling interest	`ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest`	$-248.00K	USD	Annual
Comprehensive income (loss) attributable to Cohu	`ComprehensiveIncomeNetOfTax`	$-77.85M	USD	Annual
Comprehensive income (loss) attributable to Cohu	`ComprehensiveIncomeNetOfTax`	$42.94M	USD	Annual
Comprehensive income (loss) attributable to Cohu	`ComprehensiveIncomeNetOfTax`	$-40.27M	USD	Annual

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