Guarantor Information (Income and Comprehensive Income) (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended	7 Months Ended	9 Months Ended
	Aug. 14, 2015	Sep. 30, 2015	Sep. 30, 2016	Aug. 14, 2015	Sep. 30, 2016
Successor
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		$ 0	$ 0		$ 0
Sales - third party		74,774	111,590		322,530
Net sales		74,774	111,590		322,530
Cost of sales		67,887	113,602		331,297
Lower of cost or market inventory adjustment		0	4,898		19,523
Gross profit		6,887	(6,910)		(28,290)
Research and development		220	526		1,964
Selling and administrative expenses		6,809	12,215		39,372
Impairments		0			0
Rationalizations		156	0		58
Operating loss		(298)	(19,651)		(69,684)
Other (income) expense, net		703	(567)		(1,528)
Interest expense - affiliate		0	0		0
Interest expense - third party		3,349	6,964		19,860
Interest income - affiliate		0	0		0
Interest income		(21)	(158)		(169)
Income (Loss) from continuing operations before provision for income taxes		(4,329)	(25,890)		(87,847)
(Benefit) provision for income taxes		1,107	(1,789)		(7,675)
Equity in loss from continuing operations of subsidiary		0	0		0
Net (loss) income from continuing operations		(5,436)	(24,101)		(80,172)
Income (loss) from discontinued operations, net of tax		(1,867)	1,134		(107,568)
Equity in income (loss) from discontinued operations of subsidiary		0	0		0
Net (loss) income from discontinued operations		(1,867)	1,134		(107,568)
Net loss		(7,303)	(22,967)	$ (120,649)	(187,740)
Statements of Comprehensive Income
Net income		(7,303)	(22,967)	(120,649)	(187,740)
Other comprehensive income (loss), net of tax		(6,203)	2,418		14,119
Comprehensive loss		(13,506)	(20,549)		(173,621)
Successor | Parent
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		0	0		0
Sales - third party		0	0		0
Net sales		0	0		0
Cost of sales		0	0		0
Lower of cost or market inventory adjustment			0		0
Gross profit		0	0		0
Research and development		0	0		0
Selling and administrative expenses		0	0		0
Rationalizations		0			0
Operating loss		0	0		0
Other (income) expense, net		0	0		6
Interest expense - affiliate		67	268		702
Interest expense - third party		3,227	6,362		19,059
Interest income - affiliate		0	0		0
Interest income		0	0		0
Income (Loss) from continuing operations before provision for income taxes		(3,294)	(6,630)		(19,767)
(Benefit) provision for income taxes		0	0		0
Equity in loss from continuing operations of subsidiary		(2,142)	(17,471)		(60,405)
Net (loss) income from continuing operations		(5,436)	(24,101)		(80,172)
Income (loss) from discontinued operations, net of tax		0	0		0
Equity in income (loss) from discontinued operations of subsidiary		(1,867)	1,134		(107,568)
Net (loss) income from discontinued operations		(1,867)	1,134		(107,568)
Net loss		(7,303)	(22,967)		(187,740)
Statements of Comprehensive Income
Net income		(7,303)	(22,967)		(187,740)
Other comprehensive income (loss), net of tax		(6,203)	2,418		14,119
Comprehensive loss		(13,506)	(20,549)		(173,621)
Successor | Guarantors
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		18,516	16,334		95,471
Sales - third party		17,548	21,891		64,534
Net sales		36,064	38,225		160,005
Cost of sales		32,552	36,886		142,299
Lower of cost or market inventory adjustment			1,915		5,697
Gross profit		3,512	(576)		12,009
Research and development		220	526		1,964
Selling and administrative expenses		1,844	3,906		13,580
Rationalizations		0			115
Operating loss		1,448	(5,008)		(3,650)
Other (income) expense, net		507	287		1,029
Interest expense - affiliate		0	0		0
Interest expense - third party		32	473		527
Interest income - affiliate		(67)	(268)		(702)
Interest income		0	0		0
Income (Loss) from continuing operations before provision for income taxes		976	(5,500)		(4,504)
(Benefit) provision for income taxes		745	123		378
Equity in loss from continuing operations of subsidiary		(2,373)	(11,848)		(55,523)
Net (loss) income from continuing operations		(2,142)	(17,471)		(60,405)
Income (loss) from discontinued operations, net of tax		(1,295)	958		(104,372)
Equity in income (loss) from discontinued operations of subsidiary		(572)	176		(3,196)
Net (loss) income from discontinued operations		(1,867)	1,134		(107,568)
Net loss		(4,009)	(16,337)		(167,973)
Statements of Comprehensive Income
Net income		(4,009)	(16,337)		(167,973)
Other comprehensive income (loss), net of tax		(6,203)	2,418		14,119
Comprehensive loss		(10,212)	(13,919)		(153,854)
Successor | Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		13,174	10,078		45,802
Sales - third party		57,226	89,699		257,996
Net sales		70,400	99,777		303,798
Cost of sales		67,025	103,128		330,271
Lower of cost or market inventory adjustment			2,983		13,826
Gross profit		3,375	(6,334)		(40,299)
Research and development		0	0		0
Selling and administrative expenses		4,965	8,309		25,792
Rationalizations		156			(57)
Operating loss		(1,746)	(14,643)		(66,034)
Other (income) expense, net		196	(854)		(2,563)
Interest expense - affiliate		0	0		0
Interest expense - third party		90	129		274
Interest income - affiliate		0	0		0
Interest income		(21)	(158)		(169)
Income (Loss) from continuing operations before provision for income taxes		(2,011)	(13,760)		(63,576)
(Benefit) provision for income taxes		362	(1,912)		(8,053)
Equity in loss from continuing operations of subsidiary		0	0		0
Net (loss) income from continuing operations		(2,373)	(11,848)		(55,523)
Income (loss) from discontinued operations, net of tax		(572)	176		(3,196)
Equity in income (loss) from discontinued operations of subsidiary		0	0		0
Net (loss) income from discontinued operations		(572)	176		(3,196)
Net loss		(2,945)	(11,672)		(58,719)
Statements of Comprehensive Income
Net income		(2,945)	(11,672)		(58,719)
Other comprehensive income (loss), net of tax		(6,203)	2,418		14,119
Comprehensive loss		(9,148)	(9,254)		(44,600)
Predecessor
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	$ 0			0
Sales - third party	51,604			339,907
Net sales	51,604			339,907
Cost of sales	47,408			305,001
Lower of cost or market inventory adjustment	0			0
Gross profit	4,196			34,906
Research and development	710			3,377
Selling and administrative expenses	24,585			64,383
Impairments				35,381
Rationalizations	(39)			14
Operating loss	(21,060)			(68,249)
Other (income) expense, net	269			1,421
Interest expense - affiliate	0			0
Interest expense - third party	8,790			26,211
Interest income - affiliate	0			0
Interest income	(22)			(363)
Income (Loss) from continuing operations before provision for income taxes	(30,097)			(95,518)
(Benefit) provision for income taxes	5,234			6,452
Equity in loss from continuing operations of subsidiary	0			0
Net (loss) income from continuing operations	(35,331)			(101,970)	(80,172)
Income (loss) from discontinued operations, net of tax	(6,893)			(18,679)
Equity in income (loss) from discontinued operations of subsidiary	0			0
Net (loss) income from discontinued operations	(6,893)			(18,679)
Net loss	(42,224)			(120,649)
Statements of Comprehensive Income
Net income	(42,224)			(120,649)
Other comprehensive income (loss), net of tax	(5,465)			(26,674)
Comprehensive loss	(47,689)			(147,323)
Predecessor | Parent
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	0			0
Sales - third party	0			0
Net sales	0			0
Cost of sales	0			0
Gross profit	0			0
Research and development	0			0
Selling and administrative expenses	6,750			6,750
Impairments				0
Rationalizations	0			0
Operating loss	(6,750)			(6,750)
Other (income) expense, net	0			0
Interest expense - affiliate	3			3
Interest expense - third party	7,984			24,366
Interest income - affiliate	(67)			(372)
Interest income	0			0
Income (Loss) from continuing operations before provision for income taxes	(14,670)			(30,747)
(Benefit) provision for income taxes	0			0
Equity in loss from continuing operations of subsidiary	(20,661)			(71,223)
Net (loss) income from continuing operations	(35,331)			(101,970)
Income (loss) from discontinued operations, net of tax	0			0
Equity in income (loss) from discontinued operations of subsidiary	(6,893)			(18,679)
Net (loss) income from discontinued operations	(6,893)			(18,679)
Net loss	(42,224)			(120,649)
Statements of Comprehensive Income
Net income	(42,224)			(120,649)
Other comprehensive income (loss), net of tax	(5,465)			(26,674)
Comprehensive loss	(47,689)			(147,323)
Predecessor | Guarantors
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	20,042			117,366
Sales - third party	15,705			80,243
Net sales	35,747			197,609
Cost of sales	32,658			180,983
Gross profit	3,089			16,626
Research and development	710			3,377
Selling and administrative expenses	13,419			31,513
Impairments				35,381
Rationalizations	(39)			(68)
Operating loss	(11,001)			(53,577)
Other (income) expense, net	97			889
Interest expense - affiliate	67			372
Interest expense - third party	746			1,574
Interest income - affiliate	(3)			(3)
Interest income	0			0
Income (Loss) from continuing operations before provision for income taxes	(11,908)			(56,409)
(Benefit) provision for income taxes	4,075			384
Equity in loss from continuing operations of subsidiary	(4,678)			(14,430)
Net (loss) income from continuing operations	(20,661)			(71,223)
Income (loss) from discontinued operations, net of tax	(7,786)			(13,430)
Equity in income (loss) from discontinued operations of subsidiary	893			(5,249)
Net (loss) income from discontinued operations	(6,893)			(18,679)
Net loss	(27,554)			(89,902)
Statements of Comprehensive Income
Net income	(27,554)			(89,902)
Other comprehensive income (loss), net of tax	(5,465)			(26,674)
Comprehensive loss	(33,019)			(116,576)
Predecessor | Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	10,405			52,683
Sales - third party	35,899			259,664
Net sales	46,304			312,347
Cost of sales	45,197			294,067
Gross profit	1,107			18,280
Research and development	0			0
Selling and administrative expenses	4,416			26,120
Impairments				0
Rationalizations	0			82
Operating loss	(3,309)			(7,922)
Other (income) expense, net	172			532
Interest expense - affiliate	0			0
Interest expense - third party	60			271
Interest income - affiliate	0			0
Interest income	(22)			(363)
Income (Loss) from continuing operations before provision for income taxes	(3,519)			(8,362)
(Benefit) provision for income taxes	1,159			6,068
Equity in loss from continuing operations of subsidiary	0			0
Net (loss) income from continuing operations	(4,678)			(14,430)
Income (loss) from discontinued operations, net of tax	893			(5,249)
Equity in income (loss) from discontinued operations of subsidiary	0			0
Net (loss) income from discontinued operations	893			(5,249)
Net loss	(3,785)			(19,679)
Statements of Comprehensive Income
Net income	(3,785)			(19,679)
Other comprehensive income (loss), net of tax	(5,834)			(28,041)
Comprehensive loss	(9,619)			(47,720)
Consolidating Entries and Eliminations | Successor
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		(31,690)	(26,412)		(141,273)
Sales - third party		0	0		0
Net sales		(31,690)	(26,412)		(141,273)
Cost of sales		(31,690)	(26,412)		(141,273)
Lower of cost or market inventory adjustment			0		0
Gross profit		0	0		0
Research and development		0	0		0
Selling and administrative expenses		0	0		0
Rationalizations		0			0
Operating loss		0	0		0
Other (income) expense, net		0	0		0
Interest expense - affiliate		(67)	(268)		(702)
Interest expense - third party		0	0		0
Interest income - affiliate		67	268		702
Interest income		0	0		0
Income (Loss) from continuing operations before provision for income taxes		0	0		0
(Benefit) provision for income taxes		0	0		0
Equity in loss from continuing operations of subsidiary		4,515	29,319		115,928
Net (loss) income from continuing operations		4,515	29,319		115,928
Income (loss) from discontinued operations, net of tax		0	0		0
Equity in income (loss) from discontinued operations of subsidiary		2,439	(1,310)		110,764
Net (loss) income from discontinued operations		2,439	(1,310)		110,764
Net loss		6,954	28,009		226,692
Statements of Comprehensive Income
Net income		6,954	28,009		226,692
Other comprehensive income (loss), net of tax		12,406	(4,836)		(28,238)
Comprehensive loss		$ 19,360	$ 23,173		$ 198,454
Consolidating Entries and Eliminations | Predecessor
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	(30,447)			(170,049)
Sales - third party	0			0
Net sales	(30,447)			(170,049)
Cost of sales	(30,447)			(170,049)
Gross profit	0			0
Research and development	0			0
Selling and administrative expenses	0			0
Impairments				0
Rationalizations	0			0
Operating loss	0			0
Other (income) expense, net	0			0
Interest expense - affiliate	(70)			(375)
Interest expense - third party	0			0
Interest income - affiliate	70			375
Interest income	0			0
Income (Loss) from continuing operations before provision for income taxes	0			0
(Benefit) provision for income taxes	0			0
Equity in loss from continuing operations of subsidiary	25,339			85,653
Net (loss) income from continuing operations	25,339			85,653
Income (loss) from discontinued operations, net of tax	0			0
Equity in income (loss) from discontinued operations of subsidiary	6,000			23,928
Net (loss) income from discontinued operations	6,000			23,928
Net loss	31,339			109,581
Statements of Comprehensive Income
Net income	31,339			109,581
Other comprehensive income (loss), net of tax	11,299			54,715
Comprehensive loss	$ 42,638			$ 164,296