Employee Benefit Plans (Projected Benefit Obligation) (Details) (SERP And Restoration Plans [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012	Dec. 31, 2011
Change in projected benefit obligation:
Benefit obligation at beginning of period	$ 34,102		$ 30,659
Projected benefit obligation at end of period	27,059		34,102
Change in plan assets:
Plan assets at fair value at end of the period	0		1,432	0
Unfunded status of the plans	(27,059)		(32,670)
Accrued benefit liability	(27,059)		(32,678)
Pension plan asset	0		8
Projected benefit obligation at end of period	(27,059)		(34,102)
Amounts recognized in accumulated other comprehensive income/(loss):
Unrecognized net actuarial loss	8,840	[1]	15,998
Unrecognized prior service credit	(7,920)		(9,064)
Pension and other postretirement benefit plans, amount recognized in accumulated other comprehensive income	920		6,934
Projected Benefit Obligation [Member]
Change in projected benefit obligation:
Addition of CDS Mapping	0		1,044
Service costs	637		932
Interest costs	1,293		1,386
Actuarial (gains)/losses	(5,826)		1,647
Benefits paid	(3,147)		(1,566)
Change in plan assets:
Benefits paid	(3,147)		(1,566)
Change in Plan Assets [Member]
Change in projected benefit obligation:
Addition of CDS Mapping	0		654
Benefits paid	(3,149)		(1,566)
Change in plan assets:
Actual return on plan assets	(53)		59
Company contributions	1,770		2,285
Benefits paid	$ (3,149)		$ (1,566)

[1] The risk-free interest rate for the periods within the contractual term of the PBRSUs is based on the U.S. Treasury yield curve in effect at the time of the grant.