Pension Plans and Other Postretirement Benefits (Details 4) (Postretirement Benefit Costs [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Postretirement Benefit Costs [Member]
Change in accumulated postretirement benefit obligations:
Projected benefit obligation at beginning of year	$ 2,862	$ 3,326	$ 3,489
Changes during fiscal year
Service cost	0	0	0
Interest cost	92	91	122
Plan amendment	(1,393)	0	0
Medicare prescription reimbursements	0	0	0
Employer payments net of participant contributions	(491)	(488)	(526)
Actuarial (gain) loss	60	(67)	241
Projected benefit obligation at end of year	1,130	2,862	3,326
Funded status	(1,130)	(2,862)	(3,326)
Total amount recognized in Consolidated Balance Sheets, all in other liabilities	(1,130)	(2,862)	(3,326)
Amounts recognized in accumulated other comprehensive income (loss) ("AOCI"):
Prior service cost	(1,341)	0	0
Net actuarial loss	(604)	(900)	(1,355)
Total amount recognized in AOCI	$ (1,945)	$ (900)	$ (1,355)