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Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net Income	$ 63,531us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 50,971us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic	$ 41,918us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic
Other comprehensive income:
Translation adjustment, net of tax benefit (expense) of ($63), $29 and $33 for 2014, 2013 and 2012, respectively	(24,896)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	5,941us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	5,559us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
Unamortized pension adjustments, net of tax benefit (expense) of $67, ($3) and $46 for 2014, 2013 and 2012, respectively	(370)us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	46us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	(243)us-gaap_OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent
Comprehensive income	$ 38,265us-gaap_ComprehensiveIncomeNetOfTax	$ 56,958us-gaap_ComprehensiveIncomeNetOfTax	$ 47,234us-gaap_ComprehensiveIncomeNetOfTax

X

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature, attributable to parent entity.

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