Annual report pursuant to Section 13 and 15(d)

Stock Compensation (Details)

v2.4.0.6
Stock Compensation (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Summary of nonvested shares related to Equity Incentive Plan      
Nonvested, Shares, Beginning of Period 1,493,329 2,158,644 217,284
Nonvested, Weighted average grant - date fair value, Beginning of period $ 18.97 $ 17.86 $ 16.97
Granted, Shares 10,000 139,000 2,051,500
Granted, Weighted average grant - date fair value $ 21.00 $ 30.38 $ 17.90
Vested, Shares (735,337) (804,315) (108,140)
Vested, Weighted average grant - date fair value $ 18.95 $ 17.96 $ 16.99
Cancelled, Shares (27,499) 0 (2,000)
Cancelled, Weighted average grant - date fair value $ 18.74 $ 0.00 $ 13.13
Nonvested, Shares, End of Period 740,493 1,493,329 2,158,644
Nonvested, Weighted average grant - date fair value, End of period $ 19.02 $ 18.97 $ 17.86
Stock options granted pursuant to Equity Incentive Plan      
Outstanding, Shares, Beginning of Period 451,308 1,505,694 1,739,721
Outstanding, Weighted average exercise price, Beginning of Period $ 11.26 $ 12.01 $ 11.79
Stock options granted 0 0 0
Granted, Weighted average exercise price $ 0.00 $ 0.00 $ 0.00
Exercised, Shares (137,197) (1,030,516) (125,715)
Exercised, Weighted average exercise price $ 9.46 $ 12.53 $ 9.68
Cancelled, Shares (107,711) (23,870) (108,312)
Cancelled, Weighted average exercise price $ 20.55 $ 4.10 $ 11.20
Outstanding, Shares, End of Period 206,400 451,308 1,505,694
Outstanding, Weighted average exercise price, End of Period $ 7.62 $ 11.26 $ 12.01