Discontinued Operations - Depreciation, Amortization, and Capital Expenditures (Details) - Performance Fibers business - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation and amortization	$ 37,985	$ 74,386
Capital expenditures	60,443	97,874
Jesup mill cellulose specialties expansion	$ 0	$ 148,262