v2.4.0.6
Consolidated Statement of Shareholders' Equity (Deficit) (Parenthetical) (USD $)
 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Capital Stock Par Value
Common Stock
Dec. 31, 2010
Capital Stock Par Value
Common Stock
Dec. 31, 2011
Common Stock Par Value
Common Stock
Dec. 31, 2010
Common Stock Par Value
Common Stock
Dec. 31, 2010
Class B Stock Par Value
Common Stock
Capital contribution from Parent and exchange, shares       100     5,699,088
Cash dividends paid, per share (in dollars per share) $ 0.45 $ 0.32          
Issuance of stock, shares     100     16,300,000  
Issuance of nonvested common stock, shares         117,500 583,500