Condensed Consolidated Statement Of Changes In Shareholder's Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Advisory Board and Consultants	Advisory Board and Consultants Additional Paid-In Capital	Employees	Employees Additional Paid-In Capital
Beginning Balance at Dec. 31, 2011	$ 63,443	$ 18	$ 204,055	$ (140,630)
Beginning Balance (in shares) at Dec. 31, 2011		183,253,068
Issuance of common stock under employee stock purchase plan (in shares)		41,046
Issuance of common stock under employee stock purchase plan	64		64
Exercise of stock options, net of 187,542 shares tendered in payment of exercise price (in shares)	771,500	583,958
Exercise of stock options, net of 187,542 shares tendered in payment of exercise price	259		259
Exercise of warrants (in shares)		358,500
Exercise of warrants	338		338
Stock options granted to consultants and independent financial advisors.					768	768	1,823	1,823
Repurchase and retirement of common stock (in shares)		(571,911)
Repurchase and retirement of common stock	(950)		(950)
Net loss	(7,962)			(7,962)
Ending Balance at Jun. 30, 2012	$ 57,783	$ 18	$ 206,357	$ (148,592)
Ending Balance (in shares) at Jun. 30, 2012		183,664,661