Income Taxes - Deferred Tax Assets and Deferred Tax Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred tax assets:
Postretirement benefits	$ 2,526	$ 3,830
Deferred compensation	1,768	1,940
Restructuring Related and Other Reserves	1,055	1,452
Alternative minimum tax and net operating loss carryforward	24,072	3,487
Other, net	69	0
Total deferred tax assets	29,490	10,709
Deferred tax liabilities:
Depreciation	8,026	8,032
Inventory	319	1,146
Pension	5,954	4,240
Intangible assets and goodwill	20,121	24,224
Other, net	2,561	1,665
Total deferred tax liabilities	36,981	39,307
Net deferred tax liabilities	$ 7,491	$ 28,598