CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data	Total	Common stock [Member]	Additional paid-in capital [Member]	Accumulated comprehensive deficit [Member]
BALANCE at Dec. 31, 2012	$ 42,662	$ 36	$ 211,165	$ (168,539)
BALANCE, Shares at Dec. 31, 2012		35,873,000
Non cash compensation recognized on stock options and ESPP	80		80
Restricted stock grants, net of cancellations	1,846	1	1,845
Restricted stock grants, net of cancellations, shares		1,186,000
Cancellation of shares for payment of withholding tax	(48)		(48)
Cancellation of shares for payment of withholding tax, shares		(35,000)
Employee stock purchase plan (ESPP)	21		21
Employee stock purchase plan (ESPP), shares		18,594
Comprehensive loss	(13,401)			(13,401)
BALANCE at Jun. 30, 2013	$ 31,160	$ 37	$ 213,063	$ (181,940)
BALANCE, Shares at Jun. 30, 2013		37,043,000