Employee Benefit Plans (Present Value of Accrued Liability) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Present Value Of Accrued Liabilitiy [Roll Forward]
Benefits paid	$ (16,218)	$ (15,202)
Interest cost		23,711
Executives Directors And Officer Of Acquired Entities [Member]
Present Value Of Accrued Liabilitiy [Roll Forward]
Present value of accrued liability as of January 1	25,851	25,586
Benefit expense	959	462
Benefits paid	(3,042)	(3,241)
Benefits forfeited	0	554
Interest cost	192	2,490
Present value of accrued liability as of December 31	$ 23,960	$ 25,851
Discount rate	4.90%	4.00%