Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Stockholders' deficiency:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	57,500	57,500
Preferred stock, shares outstanding	57,500	57,500
Preferred Stock, Liquidation Preference Per Share	$ 1,000	$ 1,000
Preferred stock, liquidation preference total	$ 57,500,000	$ 57,500,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares outstanding	25,209,580	25,088,539