Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 6,318us-gaap_NetIncomeLoss	$ 6,194us-gaap_NetIncomeLoss
Other comprehensive income (loss), net of reclassification adjustments:
Foreign currency translation adjustments	(877)	33
Other comprehensive income (loss)	(877)	33
Comprehensive income	$ 5,441us-gaap_ComprehensiveIncomeNetOfTax	$ 6,227us-gaap_ComprehensiveIncomeNetOfTax

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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