$COHU
COHU INC Stock $cohu

$cohu Overview Financials Valuation SEC Filings Company Website

2021 Q2 Form 10-Q Financial Statement

#000143774921018157 Filed on August 02, 2021

Income Statement

Concept	2021 Q2	2020 Q2	2020 Q1
Revenue	$244.8M	$144.1M	$138.9M
YoY Change	69.9%	-3.95%	-6.01%
Cost Of Revenue	$140.1M	$83.13M	$82.84M
YoY Change	68.59%	-5.11%	-11.3%
Gross Profit	$104.7M	$60.96M	$56.08M
YoY Change	71.69%	-2.32%	3.07%
Gross Profit Margin	42.75%	42.31%	40.37%
Selling, General & Admin	$32.83M	$30.95M	$33.35M
YoY Change	6.09%	-15.04%	-12.89%
% of Gross Profit	31.37%	50.77%	59.47%
Research & Development	$23.42M	$20.42M	$22.47M
YoY Change	14.68%	-7.62%	-1.17%
% of Gross Profit	22.38%	33.51%	40.06%
Depreciation & Amortization	$12.43M	$13.08M	$12.96M
YoY Change	-4.99%	-13.38%	-13.88%
% of Gross Profit	11.87%	21.46%	23.1%
Operating Expenses	$56.26M	$51.37M	$55.82M
YoY Change	9.51%	-12.24%	-8.52%
Operating Profit	$114.5M	-$528.0K	-$13.63M
YoY Change	-21788.83%	-96.4%	-24.23%
Interest Expense	$1.831M	$3.456M	$4.427M
YoY Change	-47.02%	-34.57%	-19.61%
% of Operating Profit	1.6%
Other Income/Expense, Net
YoY Change
Pretax Income	$112.8M	-$4.603M	-$18.31M
YoY Change	-2549.6%	-77.32%	-20.57%
Income Tax	$17.66M	$137.0K	-$992.0K
% Of Pretax Income	15.66%
Net Earnings	$95.10M	-$4.740M	-$17.28M
YoY Change	-2106.24%	-75.47%	-23.7%
Net Earnings / Revenue	38.85%	-3.29%	-12.44%
Basic Earnings Per Share	$1.96	-$0.11	-$0.42
Diluted Earnings Per Share	$1.92	-$0.11	-$0.42
COMMON SHARES
Basic Shares Outstanding	48.56M	41.84M	41.50M
Diluted Shares Outstanding	49.47M	41.84M	41.50M

Balance Sheet

Concept	2021 Q2	2020 Q2	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$434.1M	$163.6M	$172.4M
YoY Change	165.34%	13.93%	7.68%
Cash & Equivalents	$353.9M	$162.7M	$171.5M
Short-Term Investments	$80.19M	$900.0K	$900.0K
Other Short-Term Assets	$1.046M	$953.0K	$5.998M
YoY Change	9.76%	-16.7%	2224.81%
Inventory	$155.9M	$141.8M	$134.9M
Prepaid Expenses	$19.60M	$20.43M	$20.77M
Receivables	$216.0M	$122.5M	$111.5M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$826.6M	$456.3M	$453.8M
YoY Change	81.17%	3.04%	2.01%
LONG-TERM ASSETS
Property, Plant & Equipment	$65.02M	$65.81M	$64.69M
YoY Change	-1.19%	-8.32%	-9.9%
Goodwill	$226.6M	$239.0M	$238.0M
YoY Change	-5.18%	-1.04%	-0.53%
Intangibles	$203.4M	$252.2M	$261.3M
YoY Change	-19.35%	-15.14%	-14.41%
Long-Term Investments
YoY Change
Other Assets	$23.27M	$21.90M	$21.76M
YoY Change	6.25%	46.45%	44.01%
Total Long-Term Assets	$545.1M	$610.3M	$618.4M
YoY Change	-10.68%	-7.62%	-6.5%
TOTAL ASSETS
Total Short-Term Assets	$826.6M	$456.3M	$453.8M
Total Long-Term Assets	$545.1M	$610.3M	$618.4M
Total Assets	$1.372B	$1.067B	$1.072B
YoY Change	28.61%	-3.35%	-3.08%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$102.1M	$60.01M	$53.46M
YoY Change	70.15%	10.21%	13.74%
Accrued Expenses	$69.04M	$55.50M	$53.30M
YoY Change	24.39%	-21.94%	-21.39%
Deferred Revenue	$7.687M	$17.75M	$26.59M
YoY Change	-56.69%	6.28%	91.32%
Short-Term Debt	$3.160M	$4.700M	$3.200M
YoY Change	-32.77%	46.88%	0.0%
Long-Term Debt Due	$105.6M	$7.919M	$6.566M
YoY Change	1233.93%	22.07%	-0.24%
Total Short-Term Liabilities	$321.3M	$159.0M	$163.7M
YoY Change	102.03%	8.24%	18.56%
LONG-TERM LIABILITIES
Long-Term Debt	$111.7M	$348.0M	$346.9M
YoY Change	-67.89%	1.77%	1.24%
Other Long-Term Liabilities	$60.81M	$64.90M	$67.10M
YoY Change	-6.31%	-1.52%	15.29%
Total Long-Term Liabilities	$111.7M	$348.0M	$346.9M
YoY Change	-67.89%	1.77%	1.24%
TOTAL LIABILITIES
Total Short-Term Liabilities	$321.3M	$159.0M	$163.7M
Total Long-Term Liabilities	$111.7M	$348.0M	$346.9M
Total Liabilities	$433.1M	$507.1M	$510.6M
YoY Change	-14.6%	3.72%	6.21%
SHAREHOLDERS EQUITY
Retained Earnings	$148.9M	$18.02M	$22.76M
YoY Change	726.72%	-76.02%	-76.53%
Common Stock	$715.5M	$481.8M	$477.1M
YoY Change	48.51%	3.23%	3.18%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$850.2M	$466.8M	$464.9M
YoY Change
Total Liabilities & Shareholders Equity	$1.372B	$1.067B	$1.072B
YoY Change	28.61%	-3.35%	-3.08%

Cashflow Statement

Concept	2021 Q2	2020 Q2	2020 Q1
OPERATING ACTIVITIES
Net Income	$95.10M	-$4.740M	-$17.28M
YoY Change	-2106.24%	-75.47%	-23.7%
Depreciation, Depletion And Amortization	$12.43M	$13.08M	$12.96M
YoY Change	-4.99%	-13.38%	-13.88%
Cash From Operating Activities	$29.57M	-$4.520M	$17.81M
YoY Change	-754.25%	-52.37%	277.39%
INVESTING ACTIVITIES
Capital Expenditures	-$2.849M	-$6.380M	$1.584M
YoY Change	-55.34%	31.01%	-55.08%
Acquisitions
YoY Change
Other Investing Activities	$187.9M	$2.450M	$3.050M
YoY Change	7569.02%	206.25%	30400.0%
Cash From Investing Activities	$185.0M	-$3.930M	$1.465M
YoY Change	-4808.45%	-3.44%	-141.61%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$0.00
YoY Change
Debt Paid & Issued, Net			$1.133M
YoY Change
Cash From Financing Activities	-3.177M	-330.0K	-$2.246M
YoY Change	862.73%	-90.03%	-57.55%
NET CHANGE
Cash From Operating Activities	29.57M	-4.520M	$17.81M
Cash From Investing Activities	185.0M	-3.930M	$1.465M
Cash From Financing Activities	-3.177M	-330.0K	-$2.246M
Net Change In Cash	211.4M	-8.780M	$15.54M
YoY Change	-2508.17%	-47.95%	-439.39%
FREE CASH FLOW
Cash From Operating Activities	$29.57M	-$4.520M	$17.81M
Capital Expenditures	-$2.849M	-$6.380M	$1.584M
Free Cash Flow	$32.42M	$1.860M	$16.23M
YoY Change	1643.06%	-140.26%	1259.21%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2020Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000
CY2021Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
CY2020Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0
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CY2021Q2	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	48596000
CY2021Q2	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	48596000
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	42190000
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	42190000
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0
	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	100000	USD
CY2021Q2	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	7043000	USD
CY2020Q2	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	7256000	USD
	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	14144000	USD
	us-gaap	Cost Depreciation Amortization And Depletion CostDepreciationAmortizationAndDepletion	14522000	USD
CY2021Q2	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	353896000	USD
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	149358000	USD
CY2021Q2	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	80193000	USD
CY2020Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	20669000	USD
CY2021Q2	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	216008000	USD
CY2020Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	151919000	USD
CY2021Q2	us-gaap	Inventory Net InventoryNet	155850000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	142500000	USD
CY2021Q2	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	19604000	USD
CY2020Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	18773000	USD
CY2021Q2	us-gaap	Other Assets Current OtherAssetsCurrent	1046000	USD
CY2020Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1827000	USD
CY2021Q2	us-gaap	Assets Current AssetsCurrent	826597000	USD
CY2020Q4	us-gaap	Assets Current AssetsCurrent	485046000	USD
CY2021Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	65021000	USD
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CY2021Q2	us-gaap	Goodwill Goodwill	226577000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	252304000	USD
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CY2021Q2	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	3160000	USD
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CY2021Q2	us-gaap	Loans Payable To Bank Current LoansPayableToBankCurrent	102474000	USD
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CY2020Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	34862000	USD
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CY2021Q2	us-gaap	Product Warranty Accrual Classified Current ProductWarrantyAccrualClassifiedCurrent	6933000	USD
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CY2021Q2	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	19179000	USD
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CY2021Q2	cohu	Lease Liability Noncurrent LeaseLiabilityNoncurrent	23813000	USD
CY2020Q4	cohu	Lease Liability Noncurrent LeaseLiabilityNoncurrent	25787000	USD
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CY2020Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	8900000	USD
CY2021Q2	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2020Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
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CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-4326000	USD
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	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	65458000	USD
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	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
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CY2021Q2	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	75779000	USD
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	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	75664000	USD
	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	-0	USD
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	us-gaap	Costs And Expenses CostsAndExpenses	320044000	USD
	us-gaap	Costs And Expenses CostsAndExpenses	297159000	USD
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	us-gaap	Operating Income Loss OperatingIncomeLoss	150247000	USD
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	us-gaap	Interest Expense InterestExpense	4406000	USD
	us-gaap	Interest Expense InterestExpense	7883000	USD
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	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1761000	USD
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	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	143937000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-22913000	USD
CY2021Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	17659000	USD
CY2020Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	137000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	21234000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-855000	USD
CY2021Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	95096000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-4740000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	122703000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-22058000	USD
CY2021Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2020Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	42000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	95096000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-4740000	USD
	us-gaap	Net Income Loss NetIncomeLoss	122703000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-22016000	USD
CY2021Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.96
CY2020Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.11
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.66
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.53
CY2021Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2020Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2021Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.96
CY2020Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.11
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.66
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.53
CY2021Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.92
CY2020Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.11
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.58
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.53
CY2021Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2020Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2021Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.92
CY2020Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.11
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.58
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.53
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48555000
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41844000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46155000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41673000
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49474000
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41844000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47478000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41673000
CY2021Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
CY2020Q2	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0
	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.06
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	95096000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-4740000	USD
	us-gaap	Net Income Loss NetIncomeLoss	122703000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-22016000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	2890000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	1897000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-7356000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	968000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-151000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-0	USD
CY2021Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-8000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-14000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	2515000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-0	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	2515000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	-0	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	518000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1897000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-9914000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	968000	USD
CY2021Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	95614000	USD
CY2020Q2	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-2843000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	112789000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-21048000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	749474000	USD
CY2021Q2	us-gaap	Net Income Loss NetIncomeLoss	95096000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	2890000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-151000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-8000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	237000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1749000	USD
CY2021Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2021Q2	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	977000	USD
CY2021Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	2515000	USD
CY2021Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4134000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	850231000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	512288000	USD
	us-gaap	Net Income Loss NetIncomeLoss	122703000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	-7356000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	29000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-14000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2159000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1749000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	9530000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Reclassification Adjustment From Aoci Realized Upon Sale Or Liquidation Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax	2515000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7657000	USD
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	223119000	USD
CY2021Q2	us-gaap	Stockholders Equity StockholdersEquity	850231000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	464884000	USD
CY2020Q2	us-gaap	Net Income Loss NetIncomeLoss	-4740000	USD
CY2020Q2	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	1897000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1602000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
CY2020Q2	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	288000	USD
CY2020Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3403000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	466758000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	483072000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-22016000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	968000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	2486000	USD
	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	289000	USD
	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1602000	USD
	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	0	USD
	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1685000	USD
	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7014000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	466758000	USD
	us-gaap	Net Income Loss NetIncomeLoss	122703000	USD
	us-gaap	Net Income Loss NetIncomeLoss	-22016000	USD
	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	75664000	USD
	us-gaap	Disposal Group Not Discontinued Operation Gain Loss On Disposal DisposalGroupNotDiscontinuedOperationGainLossOnDisposal	35000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1761000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-0	USD
	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	0	USD
	us-gaap	Impairment Of Intangible Assets Indefinitelived Excluding Goodwill ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill	3949000	USD
	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	55000	USD
	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-112000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	24997000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	26038000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7029000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	7014000	USD
	cohu	Amortization Of Inventory Stepup And Inventory Related Charges AmortizationOfInventoryStepupAndInventoryRelatedCharges	2690000	USD
	cohu	Amortization Of Inventory Stepup And Inventory Related Charges AmortizationOfInventoryStepupAndInventoryRelatedCharges	1675000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	459000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4855000	USD
	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	45000	USD
	us-gaap	Pension And Other Postretirement Benefit Expense PensionAndOtherPostretirementBenefitExpense	452000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-72000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-291000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	219000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets IncreaseDecreaseInOtherNoncurrentAssets	-1246000	USD
	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	748000	USD
	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	513000	USD
	cohu	Interest Capitalized Associated With Cloud Computing Implementation InterestCapitalizedAssociatedWithCloudComputingImplementation	85000	USD
	cohu	Interest Capitalized Associated With Cloud Computing Implementation InterestCapitalizedAssociatedWithCloudComputingImplementation	76000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	441000	USD
	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	592000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-3776000	USD
	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	5588000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	80118000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-6439000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	25633000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	13130000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	1852000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	359000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	39611000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	6788000	USD
	cohu	Increase Decrease In Deferred Profit IncreaseDecreaseInDeferredProfit	8912000	USD
	cohu	Increase Decrease In Deferred Profit IncreaseDecreaseInDeferredProfit	1934000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	15731000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-181000	USD
	cohu	Increase Decrease In Accrued Compensation Warranty And Other Liabilities IncreaseDecreaseInAccruedCompensationWarrantyAndOtherLiabilities	368000	USD
	cohu	Increase Decrease In Accrued Compensation Warranty And Other Liabilities IncreaseDecreaseInAccruedCompensationWarrantyAndOtherLiabilities	-7994000	USD
	cohu	Increase Decrease In Operating Lease Right Of Use Assets IncreaseDecreaseInOperatingLeaseRightOfUseAssets	-3919000	USD
	cohu	Increase Decrease In Operating Lease Right Of Use Assets IncreaseDecreaseInOperatingLeaseRightOfUseAssets	-3517000	USD
	cohu	Increase Decrease In Current And Noncurrent Operating Lease Liabilities IncreaseDecreaseInCurrentAndNoncurrentOperatingLeaseLiabilities	-6319000	USD
	cohu	Increase Decrease In Current And Noncurrent Operating Lease Liabilities IncreaseDecreaseInCurrentAndNoncurrentOperatingLeaseLiabilities	-3631000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	35621000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	13289000	USD
	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	120137000	USD
	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	2975000	USD
	us-gaap	Proceeds From Sales Of Assets Investing Activities ProceedsFromSalesOfAssetsInvestingActivities	106000	USD
	us-gaap	Proceeds From Sales Of Assets Investing Activities ProceedsFromSalesOfAssetsInvestingActivities	2525000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	136526000	USD
	us-gaap	Payments To Acquire Short Term Investments PaymentsToAcquireShortTermInvestments	-0	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	77014000	USD
	us-gaap	Proceeds From Sale And Maturity Of Available For Sale Securities ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities	0	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	5549000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	7963000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	55182000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2463000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	-0	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	4971000	USD
	cohu	Issuance Repurchase Of Common Stock Net IssuanceRepurchaseOfCommonStockNet	-5622000	USD
	cohu	Issuance Repurchase Of Common Stock Net IssuanceRepurchaseOfCommonStockNet	206000	USD
	us-gaap	Proceeds From Construction Loans Payable ProceedsFromConstructionLoansPayable	818000	USD
	us-gaap	Proceeds From Construction Loans Payable ProceedsFromConstructionLoansPayable	4345000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	223119000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	104811000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2162000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	113504000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2582000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	231000	USD
	us-gaap	Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	-1446000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	204538000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	6798000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	149358000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	155930000	USD
CY2021Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	353896000	USD
CY2020Q2	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations	162728000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3747000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2103000	USD
	cohu	Inventory Capitalized As Property Plant And Equipment InventoryCapitalizedAsPropertyPlantAndEquipment	997000	USD
	cohu	Inventory Capitalized As Property Plant And Equipment InventoryCapitalizedAsPropertyPlantAndEquipment	339000	USD
	cohu	Business Divestiture Expenses Included In Other Liabilities BusinessDivestitureExpensesIncludedInOtherLiabilities	5266000	USD
	cohu	Business Divestiture Expenses Included In Other Liabilities BusinessDivestitureExpensesIncludedInOtherLiabilities	0	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	690000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2327000	USD
	cohu	Capitalized Cloud Computing Service Costs But Not Yet Paid CapitalizedCloudComputingServiceCostsButNotYetPaid	1192000	USD
	cohu	Capitalized Cloud Computing Service Costs But Not Yet Paid CapitalizedCloudComputingServiceCostsButNotYetPaid	2265000	USD
	us-gaap	Interest Paid Net InterestPaidNet	4180000	USD
	us-gaap	Interest Paid Net InterestPaidNet	10842000	USD
	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<p style="font-family: "Times New Roman"; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 27pt;"><b>Concentration of Credit Risk</b></p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt 0pt 0pt 28pt;">Financial instruments that potentially subject us to significant credit risk consist principally of cash equivalents, short-term investments and trade accounts receivable. We invest in a variety of financial instruments and, by policy, limit the amount of credit exposure with any <em style="font: inherit;">one</em> issuer.</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt 0pt 0pt 28pt;">Our trade accounts receivable are presented net of an allowance for credit losses, which is determined in accordance with the guidance provided by Accounting Standards Update (“ASU”) <em style="font: inherit;">2016</em>-<em style="font: inherit;">13,</em> <i>Financial Instruments-Credit Losses (Topic <em style="font: inherit;">326</em>): Measurement of Credit Losses on Financial Instruments</i>. At <em style="font: inherit;"> June 26, 2021 </em>and <em style="font: inherit;"> December 26, 2020 </em>our allowance for credit losses was $0.4 million and $0.1 million, respectively. Our customers include semiconductor manufacturers and semiconductor test subcontractors throughout many areas of the world. While we believe that our allowance for credit losses is adequate and represents our best estimate at <em style="font: inherit;"> June 26, 2021, </em>we will continue to monitor customer liquidity and other economic conditions, including the impact of the COVID-<em style="font: inherit;">19</em> pandemic, which <em style="font: inherit;"> may </em>result in changes to our estimates regarding expected credit losses.</p>
CY2021Q2	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	400000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	100000	USD
CY2021Q2	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	89037000	USD
CY2020Q4	us-gaap	Inventory Raw Materials And Supplies Net Of Reserves InventoryRawMaterialsAndSuppliesNetOfReserves	83755000	USD
CY2021Q2	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	48663000	USD
CY2020Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	44315000	USD
CY2021Q2	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	18150000	USD
CY2020Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	14430000	USD
CY2021Q2	us-gaap	Inventory Net InventoryNet	155850000	USD
CY2020Q4	us-gaap	Inventory Net InventoryNet	142500000	USD
CY2021Q2	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	108287000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	114636000	USD
CY2021Q2	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	43266000	USD
CY2020Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	47720000	USD
CY2021Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	65021000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	66916000	USD
CY2021Q2	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	pure
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	pure
CY2021Q2	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	12900000	USD
CY2020Q4	us-gaap	Capitalized Computer Software Gross CapitalizedComputerSoftwareGross	13500000	USD
CY2021Q2	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	300000	USD
	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	700000	USD
CY2020Q2	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	300000	USD
	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	500000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	pure
CY2020Q4	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2021Q2	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	200000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	500000	USD
CY2020Q2	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	300000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	600000	USD
CY2021Q2	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-25000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-300000	USD
CY2020Q2	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-600000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Realized ForeignCurrencyTransactionGainLossRealized	-1000000.0	USD
CY2021Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3506000	USD
CY2020Q2	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3403000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7029000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7014000	USD
CY2021Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	180000	USD
CY2020Q2	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	223000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	414000	USD
	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	395000	USD
CY2021Q2	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	3326000	USD
CY2020Q2	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	3180000	USD
	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	6615000	USD
	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	6619000	USD
CY2021Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	240000
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	120000
CY2020Q2	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	286000
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	172000
CY2021Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48555000
CY2020Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41844000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	46155000
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41673000
CY2021Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	919000
CY2020Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1323000
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0
CY2021Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49474000
CY2020Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41844000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	47478000
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41673000
CY2021Q2	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	8000000.0	USD
CY2021Q2	us-gaap	Deferred Revenue DeferredRevenue	36200000	USD
CY2021Q2	cohu	Deferred Profit DeferredProfit	17500000	USD
CY2021Q2	cohu	Deferred Profit Longterm DeferredProfitLongterm	6400000	USD
CY2020Q4	us-gaap	Deferred Revenue DeferredRevenue	17100000	USD
CY2020Q4	cohu	Deferred Profit DeferredProfit	8700000	USD
CY2020Q4	cohu	Deferred Profit Longterm DeferredProfitLongterm	6700000	USD
CY2021Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	244803000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	144084000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	470291000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	283005000	USD
CY2021Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	244803000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	144084000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	470291000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	283005000	USD
CY2021Q2	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-14200000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-4300000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	238669000	USD
CY2020	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	13635000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	252304000	USD
	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	21899000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-3828000	USD
CY2021Q2	us-gaap	Goodwill Goodwill	226577000	USD
CY2021Q2	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	80178000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	328088000	USD
CY2021Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	126571000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	338279000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	112412000	USD
	cohu	Transfer From In Process Technology To Developed Technology TransferFromInProcessTechnologyToDevelopedTechnology	5600000	USD
CY2021Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9000000.0	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	18300000	USD
CY2020Q2	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	9500000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	19100000	USD
CY2021Q2	us-gaap	Line Of Credit LineOfCredit	3160000	USD
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	5314000	USD
CY2021Q2	cohu	Debt Longterm And Shortterm Combined Amount Gross DebtLongtermAndShorttermCombinedAmountGross	220744000	USD
CY2020Q4	cohu	Debt Longterm And Shortterm Combined Amount Gross DebtLongtermAndShorttermCombinedAmountGross	325508000	USD
CY2021Q2	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	3366000	USD
CY2020Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	5568000	USD
CY2021Q2	us-gaap	Long Term Debt Current LongTermDebtCurrent	105634000	USD
CY2020Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	8389000	USD
CY2021Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	111744000	USD
CY2020Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	311551000	USD
CY2021Q2	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	16000	USD
CY2021Q2	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1000	USD
CY2021Q2	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	80193000	USD
CY2020Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	20668000	USD
CY2020Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Gain Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax	2000	USD
CY2020Q4	us-gaap	Available For Sale Securities Accumulated Gross Unrealized Loss Before Tax AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax	1000	USD
CY2020Q4	us-gaap	Available For Sale Securities Current AvailableForSaleSecuritiesCurrent	20669000	USD
CY2021Q2	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	6700000	USD
CY2020Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue	8700000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	79224000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	79239000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	20668000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Fair Value AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue	20669000	USD
CY2021Q2	cohu	Availableforsale Securities Debt Maturities Year Two Through Three Amortized Cost Basis AvailableforsaleSecuritiesDebtMaturitiesYearTwoThroughThreeAmortizedCostBasis	954000	USD
CY2021Q2	cohu	Available For Sale Securities Debt Maturities Due After One Year Through Three Years Estimated Fair Value AvailableForSaleSecuritiesDebtMaturitiesDueAfterOneYearThroughThreeYearsEstimatedFairValue	954000	USD
CY2020Q4	cohu	Availableforsale Securities Debt Maturities Year Two Through Three Amortized Cost Basis AvailableforsaleSecuritiesDebtMaturitiesYearTwoThroughThreeAmortizedCostBasis	0	USD
CY2020Q4	cohu	Available For Sale Securities Debt Maturities Due After One Year Through Three Years Estimated Fair Value AvailableForSaleSecuritiesDebtMaturitiesDueAfterOneYearThroughThreeYearsEstimatedFairValue	0	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	80178000	USD
CY2021Q2	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	80193000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date Amortized Cost Basis AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis	20668000	USD
CY2020Q4	us-gaap	Available For Sale Securities Debt Maturities Single Maturity Date AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate	20669000	USD
	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	214193
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	48442
CY2021Q2	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	9.67
CY2021Q2	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	1200000	USD
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y6M
	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	75664000	USD
	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2021Q2	us-gaap	Interest Expense InterestExpense	1831000	USD
CY2020Q2	us-gaap	Interest Expense InterestExpense	3456000	USD
	us-gaap	Interest Expense InterestExpense	4406000	USD
	us-gaap	Interest Expense InterestExpense	7883000	USD
CY2021Q2	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	94000	USD
CY2020Q2	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	21000	USD
	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	144000	USD
	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	168000	USD
CY2021Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2020Q2	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2020Q4	us-gaap	Assets Assets	1090346000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Renewal Term LesseeOperatingLeaseRenewalTerm	P25Y
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.148	pure
CY2020Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.030	pure
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.037	pure
CY2021Q2	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
CY2020Q2	us-gaap	Unrecognized Tax Benefits Period Increase Decrease UnrecognizedTaxBenefitsPeriodIncreaseDecrease	0	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1761000	USD
	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2021Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	112755000	USD
CY2020Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-4603000	USD
CY2021Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	244803000	USD
CY2020Q2	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	144084000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	470291000	USD
	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	283005000	USD
CY2021Q2	cohu	Profit Loss From Operating Segment ProfitLossFromOperatingSegment	42079000	USD
CY2020Q2	cohu	Profit Loss From Operating Segment ProfitLossFromOperatingSegment	-320000	USD
	cohu	Profit Loss From Operating Segment ProfitLossFromOperatingSegment	81135000	USD
	cohu	Profit Loss From Operating Segment ProfitLossFromOperatingSegment	-10899000	USD
CY2021Q2	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	75779000	USD
CY2020Q2	us-gaap	Gain Loss On Sale Of Business GainLossOnSaleOfBusiness	0	USD
CY2021Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.157	pure
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	143937000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-22913000	USD
CY2021Q2	us-gaap	Assets Assets	1371732000	USD
CY2021Q2	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	26850000	USD
CY2020Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	29203000	USD
CY2021Q2	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	486000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	1079000	USD
CY2020Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	486000	USD
CY2021Q2	cohu	Lease Rightofuse Asset LeaseRightofuseAsset	27336000	USD
CY2020Q4	cohu	Lease Rightofuse Asset LeaseRightofuseAsset	29689000	USD
CY2021Q2	cohu	Lease Liability LeaseLiability	28794000	USD
CY2020Q4	cohu	Lease Liability LeaseLiability	31253000	USD
CY2021Q2	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P7Y3M18D
CY2021Q2	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y2M12D
CY2020Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y3M18D
CY2021Q2	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.063	pure
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.063	pure
CY2021Q2	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.006	pure
CY2020Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.000	pure
CY2021Q2	us-gaap	Finance Lease Right Of Use Asset Accumulated Amortization FinanceLeaseRightOfUseAssetAccumulatedAmortization	100000	USD
CY2021Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	2027000	USD
CY2020Q2	us-gaap	Operating Lease Cost OperatingLeaseCost	2112000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	4067000	USD
	us-gaap	Operating Lease Cost OperatingLeaseCost	4263000	USD
CY2021Q2	us-gaap	Variable Lease Cost VariableLeaseCost	574000	USD
CY2020Q2	us-gaap	Variable Lease Cost VariableLeaseCost	547000	USD
	us-gaap	Variable Lease Cost VariableLeaseCost	1126000	USD
CY2021Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	34000	USD
CY2020Q2	us-gaap	Short Term Lease Cost ShortTermLeaseCost	19000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	67000	USD
	us-gaap	Short Term Lease Cost ShortTermLeaseCost	38000	USD
CY2021Q2	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	24000	USD
CY2020Q2	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	28000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	45000	USD
	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	48000	USD
CY2021Q2	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1000	USD
CY2020Q2	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	29000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1000	USD
	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	57000	USD
CY2021Q2	us-gaap	Sublease Income SubleaseIncome	21000	USD
CY2020Q2	us-gaap	Sublease Income SubleaseIncome	31000	USD
	us-gaap	Sublease Income SubleaseIncome	40000	USD
	us-gaap	Sublease Income SubleaseIncome	63000	USD
CY2021Q2	us-gaap	Lease Cost LeaseCost	2639000	USD
CY2020Q2	us-gaap	Lease Cost LeaseCost	2704000	USD
	us-gaap	Lease Cost LeaseCost	5266000	USD
	us-gaap	Lease Cost LeaseCost	5422000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Remainder Of Fiscal Year LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear	3200000	USD
CY2021Q2	us-gaap	Finance Lease Liability Payments Remainder Of Fiscal Year FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear	93000	USD
CY2021Q2	cohu	Lessee Lease Liability Payments Remainder Of Fiscal Year LesseeLeaseLiabilityPaymentsRemainderOfFiscalYear	3293000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	6120000	USD
CY2021Q2	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	pure
	us-gaap	Operating Lease Payments OperatingLeasePayments	4308000	USD
	us-gaap	Operating Lease Payments OperatingLeasePayments	4123000	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	0	USD
	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	57000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	91000	USD
	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	68000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	54000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Finance Lease Liability RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability	360000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	2827000	USD
	us-gaap	Right Of Use Asset Obtained In Exchange For Operating Lease Liability RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability	1576000	USD
CY2021Q2	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	186000	USD
CY2021Q2	cohu	Lessee Lease Liability Payments Due Next Twelve Months LesseeLeaseLiabilityPaymentsDueNextTwelveMonths	6306000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	5177000	USD
CY2021Q2	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	52000	USD
CY2021Q2	cohu	Lessee Lease Liability Payments Due Year Two LesseeLeaseLiabilityPaymentsDueYearTwo	5229000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4898000	USD
CY2021Q2	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	11000	USD
CY2021Q2	cohu	Lessee Lease Liability Payments Due Year Three LesseeLeaseLiabilityPaymentsDueYearThree	4909000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	4823000	USD
CY2021Q2	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	11000	USD
CY2021Q2	cohu	Lessee Lease Liability Payments Due Year Four LesseeLeaseLiabilityPaymentsDueYearFour	4834000	USD
CY2021Q2	cohu	Lessee Operating Lease Liability To Be Paid After Year Four LesseeOperatingLeaseLiabilityToBePaidAfterYearFour	12181000	USD
CY2021Q2	cohu	Finance Lease Liability To Be Paid After Year Four FinanceLeaseLiabilityToBePaidAfterYearFour	4000	USD
CY2021Q2	cohu	Lessee Lease Liability Payments Due After Year Four LesseeLeaseLiabilityPaymentsDueAfterYearFour	12185000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	36399000	USD
CY2021Q2	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	357000	USD
CY2021Q2	cohu	Lessee Lease Liability Payments Due LesseeLeaseLiabilityPaymentsDue	36756000	USD
CY2021Q2	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	7957000	USD
CY2021Q2	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	5000	USD
CY2021Q2	cohu	Lessee Lease Liability Undiscounted Excess Amount LesseeLeaseLiabilityUndiscountedExcessAmount	7962000	USD
CY2021Q2	us-gaap	Finance Lease Liability FinanceLeaseLiability	352000	USD
CY2021Q2	cohu	Lease Liability LeaseLiability	28794000	USD
CY2021Q2	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	100000	USD
	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	432000	USD
	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	11000	USD
	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	35000	USD
	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	46000	USD
	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	4000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	42000	USD
	us-gaap	Loss Contingency Disclosures LossContingencyDisclosures	<table border="0" cellpadding="0" cellspacing="0" style="width: 100%; text-indent: 0px;"><tbody><tr style="vertical-align: top;"><td style="width: 27pt;"> <p style="margin: 0pt; text-align: justify; font-family: "Times New Roman"; font-size: 10pt;"><b><em style="font: inherit;">13.</em></b></p> </td><td style="width: auto;"> <p style="margin: 0pt; text-align: justify; font-family: "Times New Roman"; font-size: 10pt;"><b>Contingencies</b></p> </td></tr> </tbody></table> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"> </p> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt 0pt 0pt 28pt;">From time-to-time we are involved in various legal proceedings, examinations by various tax authorities and claims that have arisen in the ordinary course of our business. The outcome of any litigation is inherently uncertain. While there can be <em style="font: inherit;">no</em> assurance, we do <em style="font: inherit;">not</em> believe at the present time that the resolution of these matters will have a material adverse effect on our assets, financial position or results of operations.</p>
CY2021Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7138000	USD
CY2020Q1	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6268000	USD
CY2020Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6382000	USD
CY2019Q4	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	6155000	USD
CY2021Q2	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	3243000	USD
CY2020Q2	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	1044000	USD
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	5652000	USD
	us-gaap	Product Warranty Accrual Warranties Issued ProductWarrantyAccrualWarrantiesIssued	2935000	USD
CY2021Q2	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	1895000	USD
CY2020Q2	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	1316000	USD
	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	3548000	USD
	us-gaap	Product Warranty Accrual Payments ProductWarrantyAccrualPayments	3094000	USD
CY2021Q2	cohu	Standard And Extended Product Warranty Accrual Decrease For Disposals StandardAndExtendedProductWarrantyAccrualDecreaseForDisposals	945000	USD
CY2020Q2	cohu	Standard And Extended Product Warranty Accrual Decrease For Disposals StandardAndExtendedProductWarrantyAccrualDecreaseForDisposals	-0	USD
	cohu	Standard And Extended Product Warranty Accrual Decrease For Disposals StandardAndExtendedProductWarrantyAccrualDecreaseForDisposals	945000	USD
	cohu	Standard And Extended Product Warranty Accrual Decrease For Disposals StandardAndExtendedProductWarrantyAccrualDecreaseForDisposals	-0	USD
CY2021Q2	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7541000	USD
CY2020Q2	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	5996000	USD
CY2021Q2	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	7541000	USD
CY2020Q2	us-gaap	Product Warranty Accrual ProductWarrantyAccrual	5996000	USD

Files In Submission

Name	View Source	Status
0001437749-21-018157-index-headers.html	Edgar Link	pending
0001437749-21-018157-index.html	Edgar Link	pending
0001437749-21-018157.txt	Edgar Link	pending
0001437749-21-018157-xbrl.zip	Edgar Link	pending
cohu-20210626.xsd	Edgar Link	pending
cohu-20210626_cal.xml	Edgar Link	unprocessable
cohu-20210626_def.xml	Edgar Link	unprocessable
cohu-20210626_lab.xml	Edgar Link	unprocessable
cohu-20210626_pre.xml	Edgar Link	unprocessable
cohu20210630_10q.htm	Edgar Link	pending
cohu20210630_10q_htm.xml	Edgar Link	completed
ex_269066.htm	Edgar Link	pending
ex_269067.htm	Edgar Link	pending
ex_269068.htm	Edgar Link	pending
ex_269069.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$COHU
COHU INC Stock $cohu

2021 Q2 Form 10-Q Financial Statement

#000143774921018157 Filed on August 02, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COHU COHU INC Stock $cohu

2021 Q2 Form 10-Q Financial Statement

#000143774921018157 Filed on August 02, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$COHU
COHU INC Stock $cohu