Post-retirement Plan (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Settlements				$ (30,893,000)
Net change in post-retirement benefit obligations	0	0	0	28,986,000
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Transition Costs	$ 2,600,000	$ 2,700,000	$ 8,100,000	$ 8,500,000