Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Stockholders’ deficit:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	19,684,359	19,289,489
Common stock, shares outstanding	19,165,389	18,990,290
Series B Preferred stock
Mezzanine equity:
Preferred stock, Series B Senior Convertible, par value (in dollars per share)	$ 10.00	$ 10.00
Preferred stock, Series B Senior Convertible, shares authorized	2,500,000	2,500,000
Preferred stock, Series B Senior Convertible, shares issued	386,975	351,444
Preferred stock, Series B Senior Convertible, shares outstanding	386,975	351,444