Consolidated Statements Of Stockholders' Equity (Deficit) (USD $) In Thousands, except Share data	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Total
Balance, in value at Dec. 31, 2009	$ 760	$ 362,861	$ (332,878)	$ 30,743
Balance, in shares at Dec. 31, 2009	76,014,000
Stock options exercised, in shares	351,000
Stock options exercised, in value	4	228		232
Issuance of shares, in shares	5,084,000
Issuance of shares, in value	51	9,594		9,645
Vesting of awards granted, in shares	38,000
Vesting of awards granted, in value		1,230		1,230
Stock-based bonuses and match to 401(k) Plan, in shares	196,000			74,960
Stock-based bonuses and match to 401(k) Plan, in value	2	484		486
Net income (loss)			(9,536)	(9,536)
Balance, in value at Dec. 31, 2010	817	374,397	(342,414)	32,800
Balance, in shares at Dec. 31, 2010	81,683,000
Stock options exercised, in shares	53,000
Stock options exercised, in value		34		34
Issuance of shares, in shares	15,900,000
Issuance of shares, in value	159	23,379		23,538
Vesting of awards granted, in shares	15,000
Vesting of awards granted, in value		74		74
Stock-based bonuses and match to 401(k) Plan, in shares	297,000			121,195
Stock-based bonuses and match to 401(k) Plan, in value	3	485		488
Net income (loss)			(16,949)	(16,949)
Balance, in value at Dec. 31, 2011	979	398,369	(359,363)	39,985
Balance, in shares at Dec. 31, 2011	97,948,000
Stock options exercised, in shares	96,000			96,000
Stock options exercised, in value	1	62		63
Vesting of awards granted, in shares	8,000
Vesting of awards granted, in value		194		194
Restricted stock purchased and retired, in shares	(287,000)
Restricted stock purchased and retired, value	(3)	(196)		(199)
Stock-based bonuses and match to 401(k) Plan, in shares	522,000			199,421
Stock-based bonuses and match to 401(k) Plan, in value	6	474		480
Net income (loss)			(1,101)	(1,101)
Balance, in value at Dec. 31, 2012	$ 983	$ 398,903	$ (360,464)	$ 39,422
Balance, in shares at Dec. 31, 2012	98,287,000