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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 $ 33,484us-gaap_NetIncomeLoss $ 11,147us-gaap_NetIncomeLoss $ 15,599us-gaap_NetIncomeLoss
Other comprehensive income (loss) - Currency translation adjustment (4,468)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent 1,906us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent 1,677us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
Comprehensive income $ 29,016us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent $ 13,053us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent $ 17,276us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent