CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 4,493	$ 3,043	$ 7,514	$ 5,251
Other comprehensive income (loss):
Foreign currency translation	126	153	(112)	(628)
Other comprehensive income (loss)	126	153	(112)	(628)
Comprehensive income	$ 4,619	$ 3,196	$ 7,402	$ 4,623