Discontinued Operations and Related Assets Held for Sale (Details) - USD ($) $ in Thousands	4 Months Ended	5 Months Ended	6 Months Ended	7 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Aug. 14, 2015	Dec. 31, 2016	Dec. 31, 2014	Nov. 30, 2016
Non-current Liabilities
Loss on divestiture						$ 0
Successor [Member]
Non-current assets
Total assets of discontinued operations prior to impairment		$ 103,975	$ 0		$ 0
Current Liabilities
Total current liabilities of discontinued operations		23,082	20,042		20,042
Non-current Liabilities
Other long-term obligations			850		850
Cash received from divestitures		0			15,889
Loss on divestiture		0			198
Engineered Solutions [Member] | Discontinued Operations, Held-for-sale [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Net sales		55,608		$ 98,024	115,336	260,160
Cost of sales		49,068		94,817	98,440	235,901
Gross profit		6,540		3,207	16,896	24,259
Research and development		1,265		2,179	3,145	5,107
Selling and administrative expenses		8,627		16,764	19,220	29,550
Rationalizations		791		4,492	(405)	3,679
Impairment	$ 105,600	0	14,300	0	119,907	121,570
Operating loss		(4,143)		(20,228)	(124,971)	(135,647)
Other expense (income)		(135)		(90)	(66)	(485)
Interest expense		918		907	3,258	1,320
Loss from discontinued operations before income taxes		(4,926)		(21,045)	(128,163)	(136,482)
Benefit for income taxes on discontinued operations		0		(2,366)	(1,189)	(3,626)
Loss from discontinued operations		(4,926)		(18,679)	(126,974)	(132,856)
Discontinued Operation, Alternative Cash Flow Information
Depreciation and amortization		4,194		7,988	5,277	21,780
Capital expenditures		4,447		$ 10,104	4,713	$ 24,018
Current assets
Accounts receivable		20,425	17,094		17,094
Inventories		77,332	71,816		71,816
Prepaid expenses and other current assets		524	320		320
Non-current assets
Net property plant and equipment		86,369	79,048		79,048
Other assets		17,606	12,608		12,608
Total assets of discontinued operations prior to impairment		202,256	180,886		180,886
Impairment of assets held for sale		0	(119,907)		(119,907)
Disposal Group, Including Discontinued Operation, Assets		202,256	60,979		60,979
Current Liabilities
Accounts payable		9,331	7,253		7,253
Accrued income and other taxes		3,113	2,326		2,326
Other accrued liabilities		10,638	10,463		10,463
Total current liabilities of discontinued operations		23,082	20,042		20,042
Non-current Liabilities
Other long-term obligations		1,167	850		850
Total liabilities of discontinued operations		$ 24,249	$ 20,892		$ 20,892
Fiber Materials Inc. [Member]
Non-current Liabilities
Potential earnings in disposed entity							$ 8,500