Defined Benefit Pension Plans (Components of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Qualified Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service Cost	$ 538	$ 731	$ 1,076	$ 1,461
Interest Cost	722	719	1,445	1,438
Expected Return on Plan Assets	(1,015)	(924)	(2,031)	(1,849)
Amortization of Prior Service Cost	(5)	(9)	(11)	(17)
Recognized Net Actuarial Loss	115	414	230	828
Net Periodic Benefit Cost	355	931	709	1,861
Non-Qualified Retirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service Cost	11	49	23	99
Interest Cost	119	115	239	230
Expected Return on Plan Assets	0	0	0	0
Amortization of Prior Service Cost	0	0	0	0
Recognized Net Actuarial Loss	19	49	35	98
Net Periodic Benefit Cost	$ 149	$ 213	$ 297	$ 427