Impairments, Restructuring Charges, and Other Items (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of impairment, restructuring, and other charges
Severance, restructuring costs and special termination benefits	$ 9,900,000	$ 3,800,000	$ 8,000,000
Impairments and restructuring business process re-engineering	2,700,000
Other Asset Impairment Charges	0	0	400,000
Environmental reserve on sold building	200,000	600,000	100,000
Non-cash postretirement benefits curtailment and settlement gain	0	45,000,000	0
Refund of settlement notice and administrative costs	0	(100,000)	0
Moving costs	500,000	100,000	0
Legal Fees	300,000
Total impairments, restructuring charges, and other items	$ 13,600,000	$ (40,600,000)	$ 8,500,000