Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net income (loss)	$ 1,164	$ (2,275)	$ 5,175	$ (4,381)
Unrealized gain (loss) on marketable securities, net of taxes of $0	25	6	(4)	12
Total comprehensive income (loss)	$ 1,189	$ (2,269)	$ 5,171	$ (4,369)