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, 2013	$ 18,171	$ 37	$ 214,619	$ (196,485)
BALANCE, Shares at Dec. 31, 2013	36,994,318	36,994,000
Exercise of common stock options	6		6
Exercise of common stock options, shares		4,000
Non cash compensation recognized on stock options and ESPP	112		112
Restricted stock grants, net of cancellations	2,983	1	2,982
Restricted stock grants, net of cancellations, shares		1,411,000
Cancellation of shares for payment of withholding tax	(328)		(328)
Cancellation of shares for payment of withholding tax, shares		(224,000)
Employee stock purchase plan (ESPP)	21		21
Employee stock purchase plan (ESPP), shares		27,000
Issuance of common stock in a private placement	5,291	7	5,284
Issuance of common stock in a private placement, shares		6,846,000
Comprehensive loss	(12,004)			(12,004)
BALANCE at Sep. 30, 2014	$ 14,252	$ 45	$ 222,696	$ (208,489)
BALANCE, Shares at Sep. 30, 2014	45,058,093	45,058,000