Discontinued Operation - Narrative (Details) - Total Plastics Inc - Discontinued Operations, Disposed of by Sale - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2016	Mar. 15, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration				$ 55,070
Escrow deposit				$ 1,500
Preliminary pre-tax gain			$ 2,003
(Loss) gain on sale of discontinued operations, net of income taxes	$ (1,688)	$ 1,306	$ 1,306