Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net loss	$ (10,975)	$ (19,319)	$ (17,950)
Other comprehensive income (loss), net of tax
Change in currency translation adjustment, net of tax	(148)	512	158
Changes in unrealized investment gain, net of tax	(29)	23	107
Other comprehensive income (loss)	(177)	535	265
Comprehensive loss	$ (11,152)	$ (18,784)	$ (17,685)