Accumulated Other Comprehensive Income (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Pension settlement charge	$ (8,190,000)		$ (119,735,000)
Pension/postretirement settlements and curtailments, before tax	8,377,000	46,000	118,350,000
Pension/postretirement settlements and curtailments	5,167,000
Other Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Plan remeasurement, effect on liabilities	(5,926,000)	13,396,000
Pension settlement charge
Pension/postretirement settlements and curtailments, before tax
Plan modification, effect on liabilities		(8,000,000)
Pension/Postretirement plan change in benefits		$ 4,864,000