XML 25 R79.htm IDEA: XBRL DOCUMENT v2.4.0.6
Share Based Compensation (Non-vested share grants) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]      
Shares - Nonvested - Beginning 674 714 846
Shares - Granted 370 377 387
Shares - Vested (374) (365) (445)
Shares - Forfeited (47) (52) (74)
Shares - Nonvested - Ending 623 674 714
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Roll Forward [Abstract]      
Nonvested - Beginning $ 18.56 $ 20.64 $ 21.41
Granted $ 27.46 $ 17.46 $ 15.86
Vested $ 20.03 $ 21.26 $ 17.53
Forfeited $ 19.69 $ 20.17 $ 23.16
Nonvested - Ending $ 22.91 $ 18.56 $ 20.64
Aggregate Intrinsic Value $ 14,279 $ 12,479 $ 14,579
Aggregated Intrinsic Value - Vested $ 7,487