Annual report pursuant to Section 13 and 15(d)

Income Taxes (Reconciliation Of The Tax Provision At The U.S. Federal Statutory Rate To The Provision For Income Taxes) (Details)

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Income Taxes (Reconciliation Of The Tax Provision At The U.S. Federal Statutory Rate To The Provision For Income Taxes) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Income Taxes [Abstract]      
Earnings from continuing operations, before income tax expense $ 174,885 $ 154,282 $ 137,508
Less noncontrolling interest (2,855) 3,435 2,574
Earnings from continuing operations, less noncontrolling interest, before income tax expense 177,740 150,847 134,934
Tax provision at the U.S. federal statutory rate 62,209 52,797 47,227
State income taxes, net of federal income tax benefit 3,411 6,231 2,419
Other, net 902 872 (805)
Total provision for income taxes $ 66,522 $ 59,900 $ 48,841
Effective tax rate 37.40% 39.70% 36.20%