1.0.0.3 true CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands false 1 $ true false false false Common Stock us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_CommonStockMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 2 $ true false false false Paid-in Capital us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_AdditionalPaidInCapitalMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 3 $ true false false false Retained Earnings us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_RetainedEarningsMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 4 $ true false false false Accumulated Other Comprehensive Income (Loss) us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_AccumulatedOtherComprehensiveIncomeMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 5 $ true false false false Comprehensive Income us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_ComprehensiveIncomeMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 6 $ true false false false Treasury Stock us-gaap_StatementEquityComponentsAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_TreasuryStockMember us-gaap_StatementEquityComponentsAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 false 7 $ false false shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 USDPerShare Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 5 Balance at Dec. 31, 2006 3 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false true false false true false false 1 true true 734000 734 true false 2 true true 426806000 426806 true false 3 true true 757809000 757809 true false 4 true true 11781000 11781 true false 5 false false 0 0 false false 6 true true -273835000 -273835 true false 7 true true 923295000 923295 false false No definition available. No authoritative reference available. false 6 Cumulative adjustment from adoption of uncertainty in income taxes policy 3 us-gaap_CumulativeEffectOfInitialAdoptionOfFIN48 us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false true -632000 -632 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -632000 -632 false false No definition available. No authoritative reference available. false 8 Comprehensive income: 3 us-gaap_ComprehensiveIncomeNetOfTaxAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 9 Net income 4 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false true 175929000 175929 true false 4 false false 0 0 true false 5 false true 175929000 175929 true false 6 false false 0 0 true false 7 false true 175929000 175929 false false No definition available. No authoritative reference available. false 10 Currency translation adjustment 4 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 10158000 10158 true false 5 false true 10158000 10158 true false 6 false false 0 0 true false 7 false true 10158000 10158 false false No definition available. No authoritative reference available. false 12 Defined benefit pension plans, net of tax: 3 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 13 Actuarial gain (loss) 4 us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 1119000 1119 true false 5 false true 1119000 1119 true false 6 false false 0 0 true false 7 false true 1119000 1119 false false No definition available. No authoritative reference available. false 14 Prior service credit (cost) 4 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 1096000 1096 true false 5 false true 1096000 1096 true false 6 false false 0 0 true false 7 false true 1096000 1096 false false No definition available. No authoritative reference available. false 15 Total comprehensive income 3 us-gaap_ComprehensiveIncomeNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 188302000 188302 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. true 16 Shares issued under various employee benefit and stock compensation plans 3 cvd_SharesIssuedEmployeeBenefitAndStockCompensationPlans cvd false credit duration monetary Value of stock issued during the period under various employee benefit and stock compensation plans, such as share-based... false false false false false false false false false 1 false true 5000 5 true false 2 false true 31909000 31909 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 31914000 31914 false false Value of stock issued during the period under various employee benefit and stock compensation plans, such as share-based compensation plans, employee stock purchase plan, and the company match in the 401(k) plan. No authoritative reference available. false 17 Stock option exercises 3 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 7000 7 true false 2 false true 22239000 22239 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 22246000 22246 false false No definition available. No authoritative reference available. false 18 Tax benefit from stock issued 3 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 11419000 11419 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 11419000 11419 false false No definition available. No authoritative reference available. false 19 Treasury stock, at cost 3 us-gaap_TreasuryStockValueAcquiredCostMethod us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true -66356000 -66356 true false 7 false true -66356000 -66356 false false No definition available. No authoritative reference available. false 20 Balance at Dec. 31, 2007 3 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 false true 746000 746 true false 2 false true 492373000 492373 true false 3 false true 933106000 933106 true false 4 false true 24154000 24154 true false 5 false true 0 0 true false 6 false true -340191000 -340191 true false 7 false true 1110188000 1110188 false false No definition available. No authoritative reference available. false 7 Effect of change in pension and post-retirement plan measurement date 3 us-gaap_EffectOnRetainedEarningsAccumulatedDeficitDueToChangeInMeasurementDateNetOfTax us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false true -297000 -297 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -297000 -297 false false No definition available. No authoritative reference available. false 8 Comprehensive income: 3 us-gaap_ComprehensiveIncomeNetOfTaxAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 9 Net income 4 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false true 196760000 196760 true false 4 false false 0 0 true false 5 false true 196760000 196760 true false 6 false false 0 0 true false 7 false true 196760000 196760 false false No definition available. No authoritative reference available. false 10 Currency translation adjustment 4 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -40544000 -40544 true false 5 false true -40544000 -40544 true false 6 false false 0 0 true false 7 false true -40544000 -40544 false false No definition available. No authoritative reference available. false 11 Unrealized gain on securities, net of tax 4 us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 4359000 4359 true false 5 false true 4359000 4359 true false 6 false false 0 0 true false 7 false true 4359000 4359 false false No definition available. No authoritative reference available. false 12 Defined benefit pension plans, net of tax: 3 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 13 Actuarial gain (loss) 4 us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -1867000 -1867 true false 5 false true -1867000 -1867 true false 6 false false 0 0 true false 7 false true -1867000 -1867 false false No definition available. No authoritative reference available. false 14 Prior service credit (cost) 4 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -77000 -77 true false 5 false true -77000 -77 true false 6 false false 0 0 true false 7 false true -77000 -77 false false No definition available. No authoritative reference available. false 15 Total comprehensive income 3 us-gaap_ComprehensiveIncomeNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 158631000 158631 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. true 16 Shares issued under various employee benefit and stock compensation plans 3 cvd_SharesIssuedEmployeeBenefitAndStockCompensationPlans cvd false credit duration monetary Value of stock issued during the period under various employee benefit and stock compensation plans, such as share-based... false false false false false false false false false 1 false true 3000 3 true false 2 false true 32075000 32075 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 32078000 32078 false false Value of stock issued during the period under various employee benefit and stock compensation plans, such as share-based compensation plans, employee stock purchase plan, and the company match in the 401(k) plan. No authoritative reference available. false 17 Stock option exercises 3 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 5000 5 true false 2 false true 17884000 17884 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 17889000 17889 false false No definition available. No authoritative reference available. false 18 Tax benefit from stock issued 3 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true 9266000 9266 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 9266000 9266 false false No definition available. No authoritative reference available. false 19 Treasury stock, at cost 3 us-gaap_TreasuryStockValueAcquiredCostMethod us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true -132906000 -132906 true false 7 false true -132906000 -132906 false false No definition available. No authoritative reference available. false 20 Balance at Dec. 31, 2008 3 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 false true 754000 754 true false 2 false true 551598000 551598 true false 3 false true 1129569000 1129569 true false 4 false true -13975000 -13975 true false 5 false true 0 0 true false 6 false true -473097000 -473097 true false 7 false true 1194849000 1194849 false false No definition available. No authoritative reference available. false 8 Comprehensive income: 3 us-gaap_ComprehensiveIncomeNetOfTaxAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 9 Net income 4 us-gaap_NetIncomeLoss us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false true 175882000 175882 true false 4 false false 0 0 true false 5 false true 175882000 175882 true false 6 false false 0 0 true false 7 false true 175882000 175882 false false No definition available. No authoritative reference available. false 10 Currency translation adjustment 4 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 14605000 14605 true false 5 false true 14605000 14605 true false 6 false false 0 0 true false 7 false true 14605000 14605 false false No definition available. No authoritative reference available. false 11 Unrealized gain on securities, net of tax 4 us-gaap_OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease us-gaap true na duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true 805000 805 true false 5 false true 805000 805 true false 6 false false 0 0 true false 7 false true 805000 805 false false No definition available. No authoritative reference available. false 12 Defined benefit pension plans, net of tax: 3 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecreaseAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. false 13 Actuarial gain (loss) 4 us-gaap_OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -6645000 -6645 true false 5 false true -6645000 -6645 true false 6 false false 0 0 true false 7 false true -6645000 -6645 false false No definition available. No authoritative reference available. false 14 Prior service credit (cost) 4 us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false true -71000 -71 true false 5 false true -71000 -71 true false 6 false false 0 0 true false 7 false true -71000 -71 false false No definition available. No authoritative reference available. false 15 Total comprehensive income 3 us-gaap_ComprehensiveIncomeNetOfTax us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false true 184576000 184576 true false 6 false false 0 0 true false 7 false false 0 0 false false No definition available. No authoritative reference available. true 16 Shares issued under various employee benefit and stock compensation plans 3 cvd_SharesIssuedEmployeeBenefitAndStockCompensationPlans cvd false credit duration monetary Value of stock issued during the period under various employee benefit and stock compensation plans, such as share-based... false false false false false false false false false 1 false true 9000 9 true false 2 false true 33768000 33768 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 33777000 33777 false false Value of stock issued during the period under various employee benefit and stock compensation plans, such as share-based compensation plans, employee stock purchase plan, and the company match in the 401(k) plan. No authoritative reference available. false 17 Stock option exercises 3 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 1000 1 true false 2 false true 3091000 3091 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true 3092000 3092 false false No definition available. No authoritative reference available. false 18 Tax benefit from stock issued 3 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false true -462000 -462 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false false 0 0 true false 7 false true -462000 -462 false false No definition available. No authoritative reference available. false 19 Treasury stock, at cost 3 us-gaap_TreasuryStockValueAcquiredCostMethod us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false false 0 0 true false 2 false false 0 0 true false 3 false false 0 0 true false 4 false false 0 0 true false 5 false false 0 0 true false 6 false true -4828000 -4828 true false 7 false true -4828000 -4828 false false No definition available. No authoritative reference available. false 20 Balance at Dec. 31, 2009 3 us-gaap_StockholdersEquity us-gaap true credit instant monetary No definition available. false false false true false false false true false 1 true true 764000 764 true false 2 true true 587995000 587995 true false 3 true true 1305451000 1305451 true false 4 true true -5281000 -5281 true false 5 true true 0 0 true false 6 true true -477925000 -477925 true false 7 true true 1411004000 1411004 false false No definition available. No authoritative reference available. false false 7 41 false Thousands UnKnown UnKnown false true