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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
NET INCOME $ 10,474us-gaap_NetIncomeLoss $ 7,296us-gaap_NetIncomeLoss
Other comprehensive income (loss):    
Foreign currency translation adjustment (303)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax 161us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Total other comprehensive income (loss) (303)us-gaap_OtherComprehensiveIncomeLossNetOfTax 161us-gaap_OtherComprehensiveIncomeLossNetOfTax
COMPREHENSIVE INCOME $ 10,171us-gaap_ComprehensiveIncomeNetOfTax $ 7,457us-gaap_ComprehensiveIncomeNetOfTax