Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Redeemable convertible preferred stock shares par value per share	$ 0.01	$ 0.01
Redeemable convertible preferred stock, shares authorized	200,000	200,000
Redeemable convertible preferred stock, shares issued	12,000	196,000
Redeemable convertible preferred stock, shares outstanding	12,000	196,000
Preferred stock, shares liquidation preference	$ 300,000
Preferred stock, par value	$ 0.01	$ 0.01
Convertible Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	30,635,720	26,785,645
Common stock, shares outstanding	30,635,720	26,785,645
Series A Preferred Stock
Convertible Preferred stock, shares authorized	25,000	25,000
Series D Preferred Stock
Convertible Preferred stock, shares authorized	500,000	500,000
Series E Preferred Stock
Convertible Preferred stock, shares authorized	800	800
Series F Preferred Stock
Redeemable convertible preferred stock shares par value per share	$ 0.01	$ 0.01
Redeemable convertible preferred stock, shares authorized	200,000	200,000
Redeemable convertible preferred stock, shares issued	12,000	196,000
Redeemable convertible preferred stock, shares outstanding	12,000	196,000
Preferred stock, shares liquidation preference	$ 300,000