Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net loss	$ (1,473)	$ (3,167)
Foreign currency translation adjustments	160	857
Unrealized gain (loss) on investments	(4,626)	2,426
Other comprehensive income (loss)	(4,466)	3,283
Comprehensive income (loss)	$ (5,939)	$ 116