XML 26 R3.htm IDEA: XBRL DOCUMENT v2.4.0.6
Consolidated Balance Sheets (Parenthetical) (USD $)
Dec. 31, 2011
Dec. 31, 2010
Preferred stock, par value $ 0.01 $ 0.01
Preferred stock, shares authorized 1,000,000 1,000,000
Preferred stock, shares outstanding 0 0
Common stock, par value $ 0.01 $ 0.01
Treasury stock, shares 1,639,843 1,639,843
Common Class A
    
Common stock, shares authorized 60,000,000 60,000,000
Common stock, shares outstanding 27,406,424 26,798,707
Common Class B
    
Common stock, shares authorized 20,000,000 20,000,000
Common stock, shares outstanding 10,776,697 10,700,044