Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 3,480		$ 1,194		$ 4,695		$ 2,805
Other comprehensive income (loss):
Foreign currency translation adjustments	162	[1]	(420)	[1]	439	[1]	(316)	[1]
Unrealized gains (losses) from marketable securities, net of tax	2		11		(10)		0
Total other comprehensive income (loss)	164		(409)		429		(316)
Comprehensive income	$ 3,644		$ 785		$ 5,124		$ 2,489

[1] In all periods presented, there were no tax impacts related to rate changes and no amounts were reclassified to earnings.