Share-Based Compensation (Share-Based Compensation Arrangement Expenses Recognized) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Salaries, wages and employee benefits	$ 20,783	$ 14,464	$ 12,764
Deferred income tax benefit	(8,090)	(5,616)	(4,935)
Net share-based compensation expense	$ 12,693	$ 8,848	$ 7,829