Consolidated Balance Sheets [Parenthetical] (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Series C Convertible Preferred Stock [Member]	Dec. 31, 2011 Series C Convertible Preferred Stock [Member]	Dec. 31, 2012 Series D Convertible Preferred Stock [Member]	Dec. 31, 2011 Series D Convertible Preferred Stock [Member]
Allowance for Doubtful Accounts Receivable, Current (in dollars)	$ 0	$ 19
Convertible preferred stock, par value (in dollars per share)			$ 0.01	$ 0.01	$ 0.01	$ 0.01
Convertible preferred stock, shares authorized			27,000	27,000	25,000	25,000
Convertible preferred stock, shares issued			4,840	5,086	3,481	13,950
Convertible preferred stock, shares outstanding			4,840	5,086	3,481	13,950
Convertible preferred stock, liquidation value (in dollars)			$ 4,840	$ 5,086	$ 348	$ 1,395
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	5,000,000,000	5,000,000,000
Common stock, shares issued	2,106,035,882	541,999,246
Common stock, shares outstanding	2,106,035,882	541,999,246
Treasury stock, shares	2,012	2,012