Retirement Plans (Expected Benefit Payments) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Year one	$ 6,538	$ 6,213
Year two	6,996	6,545
Year three	7,598	6,992
Year four	8,321	7,579
Year five	9,140	8,265
Next five years	59,242	53,734
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Year one	144	101
Year two	142	100
Year three	149	98
Year four	154	105
Year five	151	109
Next five years	663	616
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Year one	215	237
Year two	218	242
Year three	219	245
Year four	229	245
Year five	226	255
Next five years	$ 976	$ 1,154