Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net loss	$ (4,799)	$ (715)	$ (5,390)	$ (3,391)
Other comprehensive (loss) income:
Unrealized (loss) gain on available-for-sale investment securities	(684)	(68)	(735)	427
Income tax effect	241	0	241	0
Other comprehensive (loss) income	(443)	(68)	(494)	(2,964)
Total comprehensive loss	$ (5,242)	$ (783)	$ (5,884)	$ (2,964)