Consolidated Statements Of Stockholders' Equity (USD $) In Thousands	Series B Preferred Stock [Member]	Series E Preferred Stock [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accum Deficit [Member]	Total
Balances at Dec. 31, 2009	$ 0	$ 6,855	$ 230	$ 118,093	$ (109,630)	$ 15,548
Balances,shares at Dec. 31, 2009	44	1,731	23,045
Declared and paid dividends on preferred stock	0	0	0	138	(138)	0
Declared and paid dividends on preferred stock, shares	0	0	25
Common stock issued from exercise of stock options	0	0	0	35	0	35
Common stock issued from exercise of stock options, shares	0	0	8
Common stock issued from exercise of warrants	0	0	1	(1)	0	0
Common stock issued from exercise of warrants, shares	0	0	37
Common stock issued from exercise of Option Matching Rights	0	0	1	35	0	36
Common stock issued from exercise of Option Matching Rights, shares	0	0	45
Issuance of warrants	0	0	0	5,618	0	5,618
Stock-based compensation	0	0	0	2,627	0	2,627
Net loss	0	0	0	0	(17,573)	(17,573)
Balances at Dec. 31, 2010	0	6,855	232	126,545	(127,341)	6,291
Balances,shares at Dec. 31, 2010	44	1,731	23,160
Declared and paid dividends on preferred stock	0	0	0	114	(114)	0
Declared and paid dividends on preferred stock, shares	0	0	59
Stock issuance costs	0	0	0	(177)	0	(177)
Common stock issued from exercise of Option Matching Rights	0	0	66	17,508	0	17,574
Common stock issued from exercise of Option Matching Rights, shares			6,629
Stock-based compensation	0	0	1	1,214	0	1,215
Share based compensation, shares			83
Net loss	0	0	0	0	(24)	(24)
Balances at Dec. 31, 2011	$ 0	$ 6,855	$ 299	$ 145,204	$ (127,479)	$ 24,879
Balances,shares at Dec. 31, 2011	44	1,731	29,931