Discontinued Operations (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended	12 Months Ended	15 Months Ended
	Jan. 19, 2016	Jul. 02, 2016	Jan. 02, 2016	Jul. 02, 2016	Dec. 31, 2016	Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of discontinued operations before income taxes		$ 3,304		$ 1,273
Packaging Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of discontinued operations	$ 89,600
Sale of discontinued operations, transaction costs	$ 6,300
Loss on sale of discontinued operations before income taxes		$ (3,300)	$ 5,000	$ (1,300)	$ (1,400)	$ 3,600
Sale of discontinued operations, impairment			$ 9,900