Share-Based Compensation (Share-Based Compensation Arrangement Expenses Recognized) (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Salaries, wages and employee benefits	$ 14,464	$ 12,764	$ 15,020
Deferred income tax benefit	(5,616)	(4,935)	(5,803)
Net share-based compensation expense	$ 8,848	$ 7,829	$ 9,217

Employee Service Share Based Compensation Deferred Tax Benefit From Compensation Expense

No definition available.

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