Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net income	$ 1,543	$ 1,339
Other comprehensive income:
Foreign currency translation adjustments	34	61
Unrealized gain from marketable securities, net of tax	15
Total other comprehensive income	49	61
Comprehensive income	$ 1,592	$ 1,400