Employee Benefit Plans (Reconciliation of Benefit Obligations, Plan Assets and Funded Status) (Details) (Pension plans, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension plans
Change in benefit obligation:
Benefit obligation at beginning of year	$ 45,561	$ 50,700
Service cost — benefits earned during the year	4	5	6
Interest cost on projected benefit obligations	1,888	1,842	2,205
Actuarial (gain)/loss	4,989	(3,208)
Benefits paid	(4,242)	(3,778)
Benefit obligation and funded status at end of year	48,200	45,561	50,700
Change in plan assets:
Fair value of plan assets at beginning of plan year	49,873	46,547
Actual return on plan assets	3,025	7,104
Benefits paid	(4,242)	(3,778)
Fair value of plan assets at measurement date	48,656	49,873	46,547
Benefit plan assets of benefit obligation	456	4,312
Defined Benefit Plan, Assets for Plan Benefits	$ 456	$ 4,312