Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v2.4.0.6
Consolidated Balance Sheets (Parenthetical) (USD $)
Dec. 31, 2011
Dec. 31, 2010
Consolidated Balance Sheets [Abstract]    
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 125,000,000 125,000,000
Common stock, shares issued 40,377,021 40,030,136
Treasury stock, shares 7,891,250 7,891,250