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Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Statement of Comprehensive Income [Abstract]    
Net income $ 13,634us-gaap_NetIncomeLoss $ 3,510us-gaap_NetIncomeLoss
Other comprehensive income - Cumulative translation adjustment (3,544)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent 78us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent
Comprehensive income $ 10,090us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent $ 3,588us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent