XML 112 R92.htm IDEA: XBRL DOCUMENT v2.4.1.9
Income Taxes (Additional Information) (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Taxes [Line Items]      
Effective Income Tax Rate Reconciliation, Distribution of Profits $ 4,700,000rog_EffectiveIncomeTaxRateReconciliationDistributionofProfits    
Tax loss and credit carryforwards 16,533,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 15,041,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards  
Tax credit carryforwards, foreign 15,500,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign    
Tax credit carryforwards, research 5,200,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch    
Tax credit carryforwards, AMT 500,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax    
Excluded tax credit carryforwards, foreign 8,600,000rog_DeferredTaxAssetsExcludedTaxCreditCarryforwardsForeign    
Excluded tax credit carryforwards, research 1,200,000rog_DeferredTaxAssetsExcludedTaxCreditCarryforwardsResearch    
Excluded tax credit carryforwards, AMT 400,000rog_DeferredTaxAssetsExcludedTaxCreditCarryforwardsAlternativeMinimumTax    
Deferred tax asset valuation allowance 7,691,000us-gaap_DeferredTaxAssetsValuationAllowance 7,302,000us-gaap_DeferredTaxAssetsValuationAllowance  
Decrease in income tax expense if valuation allowance reversed 6,800,000rog_DeferredTaxAssetsPotentialIncreaseDecreaseinIncomeTaxExpense    
Increase in equity if valuation allowance reversed 900,000rog_DeferredTaxAssetsPotentialIncreaseDecreaseInNetAssetsIfRealized    
Income (loss) before income tax expense (benefit) 80,410,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest 48,885,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest 22,650,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Undistributed foreign earnings 169,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries 172,900,000us-gaap_UndistributedEarningsOfForeignSubsidiaries  
Income taxes paid, net of refunds 14,500,000us-gaap_IncomeTaxesPaidNet 11,100,000us-gaap_IncomeTaxesPaidNet 11,600,000us-gaap_IncomeTaxesPaidNet
Unrecognized tax benefits 9,368,000us-gaap_UnrecognizedTaxBenefits 9,148,000us-gaap_UnrecognizedTaxBenefits 17,333,000us-gaap_UnrecognizedTaxBenefits
Unrecognized tax benefits that would impact effective tax rate 100,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate    
Unrecognized tax benefits, interest and penalties accrued 1,200,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 1,100,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued  
Minimum amount of unrecognized tax benefits that could be recognized over next 12 months 3,900,000us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleEstimatedRangeOfChangeLowerBound    
China [Member]      
Income Taxes [Line Items]      
Net operating loss carryforward, foreign 700,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign
/ us-gaap_StatementGeographicalAxis
= country_CN		    
Japan [Member]      
Income Taxes [Line Items]      
Net operating loss carryforward, foreign 100,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign
/ us-gaap_StatementGeographicalAxis
= country_JP		    
Minimum [Member]      
Income Taxes [Line Items]      
State operating loss carryforwards 100,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		    
Maximum [Member]      
Income Taxes [Line Items]      
State operating loss carryforwards 16,200,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
/ us-gaap_RangeAxis
= us-gaap_MaximumMember		    
Arizona | Minimum [Member]      
Income Taxes [Line Items]      
Tax loss and credit carryforwards $ 7,000,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= stpr_AZ
/ us-gaap_RangeAxis
= us-gaap_MinimumMember