Employee Benefit Plans (Schedule of Changes in Benefit Obligation and Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amounts recognized in accumulated other comprehensive loss
Total	$ 2,163	$ 1,841
Supplemental Executive Retirement Plan [Member]
Benefit obligations:
Beginning of year	9,927	10,346
Service cost	270	326	269
Interest cost	456	377	408
Actuarial (gain) loss	777	(579)
Benefits paid	(596)	(543)
End of year	10,834	9,927	10,346
Fair value of plan assets:
Beginning of year	0	0
Employer contributions	596	543
Benefits paid	(596)	(543)
End of year	0	0	0
Funded status at end of year, included in other liabilities	10,834	9,927
Amounts recognized in accumulated other comprehensive loss
Net actuarial loss	1,953	1,539
Prior service cost (credit)	17	29
Total	1,970	1,568
Other Postretirement Benefit Plan [Member]
Benefit obligations:
Beginning of year	3,094	3,536
Service cost	45	42	70
Interest cost	132	173	148
Actuarial (gain) loss	(134)	(538)
Benefits paid	(140)	(119)
End of year	2,997	3,094	3,536
Fair value of plan assets:
Beginning of year	0	0
Employer contributions	140	119
Benefits paid	(140)	(119)
End of year	0	0	0
Funded status at end of year, included in other liabilities	2,997	3,094
Amounts recognized in accumulated other comprehensive loss
Net actuarial loss	378	458
Prior service cost (credit)	(185)	(185)
Total	$ 193	$ 273