Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 4,533	$ 3,580	$ 860
Unrealized loss on marketable securities	(4)	(1)	(1)
Foreign currency translation adjustment	388	562	(415)
Unrealized gain (loss) on derivative instruments	210	(31)	(267)
Other comprehensive income (loss), net of tax	594	530	(683)
Total comprehensive income	$ 5,127	$ 4,110	$ 177