Consolidated Statements of Stockholder's Equity and Comprehensive Loss (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2010	$ 40	$ 173,262	$ (239)	$ (157,650)	$ 15,413
Balance (in Shares) at Dec. 31, 2010	3,959,000
Net loss				(7,311)	(7,311)
Other comprehensive			(477)		(477)
Proceeds from equity offering, net of costs of $1,271	31	10,150			10,181
Proceeds from equity offering, net of costs of $1,271 (in Shares)	3,054,000
Commitment shares issued to Lincoln Park Capital		134			134
Commitment shares issued to Lincoln Park Capital (in Shares)	40,000
Consultant stock-based compensation expense		56			56
Stock based compensation plans	1	1,438			1,439
Stock based compensation plans (in Shares)	116,000
Exercise of stock warrants		433			433
Exercise of stock warrants (in Shares)	50,000
Balance at Dec. 31, 2011	72	185,473	(716)	(164,961)	19,868
Balance (in Shares) at Dec. 31, 2011	7,219,000
Net loss				(9,660)	(9,660)
Other comprehensive			604		604
Issuance of warrants with shareholder note		70			70
Consultant stock-based compensation expense		(6)			(6)
Consultant stock-based compensation expense (in Shares)	23,000
Stock based compensation plans	1	569			570
Stock based compensation plans (in Shares)	12,000
Balance at Dec. 31, 2012	$ 73	$ 186,106	$ (112)	$ (174,621)	$ 11,446
Balance (in Shares) at Dec. 31, 2012	7,254,000