CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, Authorized shares	20,000,000	20,000,000
Preferred stock, Issued shares
Preferred stock, outstanding shares
Common stock, par value	$ 0.01	$ 0.01
Common stock, Authorized shares	150,000,000	150,000,000
Common stock, Issued shares	22,497,047	22,430,234
Common stock, outstanding shares	22,497,047	22,430,234