Guarantor Information (Income and Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Successor
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	$ 0
Sales - third party	124,665
Net sales	124,665
Cost of sales	122,999
Lower of cost or market inventory adjustment	11,537
Gross profit	(9,871)
Research and development	1,530
Selling and administrative expenses	18,117
Impairments	0
Rationalizations	131
Operating loss	(29,649)
Other (income) expense, net	246
Interest expense - affiliate	0
Interest expense - third party	7,180
Interest income - affiliate	0
Interest income	(12)
Loss before provision for income taxes	(37,063)
(Benefit) provision for income taxes	(688)
Equity in loss of subsidiary	0
Net loss	(36,375)
Statements of Comprehensive Income
Net income	(36,375)
Other comprehensive income (loss), net of tax:	12,637
Comprehensive loss	(23,738)
Successor | Parent
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	0
Sales - third party	0
Net sales	0
Cost of sales	0
Lower of cost or market inventory adjustment	0
Gross profit	0
Research and development	0
Selling and administrative expenses	0
Rationalizations	0
Operating loss	0
Other (income) expense, net	6
Interest expense - affiliate	198
Interest expense - third party	6,344
Interest income - affiliate	0
Interest income	0
Loss before provision for income taxes	(6,548)
(Benefit) provision for income taxes	0
Equity in loss of subsidiary	(29,827)
Net loss	(36,375)
Statements of Comprehensive Income
Net income	(36,375)
Other comprehensive income (loss), net of tax:	12,637
Comprehensive loss	(23,738)
Successor | Guarantors
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	44,686
Sales - third party	45,655
Net sales	90,341
Cost of sales	86,629
Lower of cost or market inventory adjustment	2,073
Gross profit	1,639
Research and development	1,530
Selling and administrative expenses	9,563
Rationalizations	87
Operating loss	(9,541)
Other (income) expense, net	269
Interest expense - affiliate	0
Interest expense - third party	760
Interest income - affiliate	(198)
Interest income	0
Loss before provision for income taxes	(10,372)
(Benefit) provision for income taxes	131
Equity in loss of subsidiary	(19,324)
Net loss	(29,827)
Statements of Comprehensive Income
Net income	(29,827)
Other comprehensive income (loss), net of tax:	12,637
Comprehensive loss	(17,190)
Successor | Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	19,730
Sales - third party	79,010
Net sales	98,740
Cost of sales	100,786
Lower of cost or market inventory adjustment	9,464
Gross profit	(11,510)
Research and development	0
Selling and administrative expenses	8,554
Rationalizations	44
Operating loss	(20,108)
Other (income) expense, net	(29)
Interest expense - affiliate	0
Interest expense - third party	76
Interest income - affiliate	0
Interest income	(12)
Loss before provision for income taxes	(20,143)
(Benefit) provision for income taxes	(819)
Equity in loss of subsidiary	0
Net loss	(19,324)
Statements of Comprehensive Income
Net income	(19,324)
Other comprehensive income (loss), net of tax:	12,637
Comprehensive loss	(6,687)
Successor | Consolidating Entries and Eliminations
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates	(64,416)
Sales - third party	0
Net sales	(64,416)
Cost of sales	(64,416)
Lower of cost or market inventory adjustment	0
Gross profit	0
Research and development	0
Selling and administrative expenses	0
Rationalizations	0
Operating loss	0
Other (income) expense, net	0
Interest expense - affiliate	(198)
Interest expense - third party	0
Interest income - affiliate	198
Interest income	0
Loss before provision for income taxes	0
(Benefit) provision for income taxes	0
Equity in loss of subsidiary	49,151
Net loss	49,151
Statements of Comprehensive Income
Net income	49,151
Other comprehensive income (loss), net of tax:	(25,274)
Comprehensive loss	23,877
Predecessor
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		$ 0
Sales - third party		207,211
Net sales	207,211	207,211
Cost of sales		186,448
Lower of cost or market inventory adjustment		0
Gross profit		20,763
Research and development		2,431
Selling and administrative expenses		26,290
Impairments		35,381
Rationalizations		2,494
Operating loss	(45,833)	(45,833)
Other (income) expense, net		393
Interest expense - affiliate		0
Interest expense - third party		8,921
Interest income - affiliate		0
Interest income		(73)
Loss before provision for income taxes	$ (55,074)	(55,074)
(Benefit) provision for income taxes		534
Equity in loss of subsidiary		0
Net loss		(55,608)
Statements of Comprehensive Income
Net income		(55,608)
Other comprehensive income (loss), net of tax:		(28,766)
Comprehensive loss		(84,374)
Predecessor | Parent
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		0
Sales - third party		0
Net sales		0
Cost of sales		0
Gross profit		0
Research and development		0
Selling and administrative expenses		0
Impairments		0
Rationalizations		0
Operating loss		0
Other (income) expense, net		0
Interest expense - affiliate		0
Interest expense - third party		8,162
Interest income - affiliate		(160)
Interest income		0
Loss before provision for income taxes		(8,002)
(Benefit) provision for income taxes		0
Equity in loss of subsidiary		(47,606)
Net loss		(55,608)
Statements of Comprehensive Income
Net income		(55,608)
Other comprehensive income (loss), net of tax:		(28,766)
Comprehensive loss		(84,374)
Predecessor | Guarantors
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		51,184
Sales - third party		72,021
Net sales		123,205
Cost of sales		116,589
Gross profit		6,616
Research and development		2,431
Selling and administrative expenses		14,441
Impairments		35,381
Rationalizations		326
Operating loss		(45,963)
Other (income) expense, net		309
Interest expense - affiliate		160
Interest expense - third party		665
Interest income - affiliate		0
Interest income		0
Loss before provision for income taxes		(47,097)
(Benefit) provision for income taxes		351
Equity in loss of subsidiary		(158)
Net loss		(47,606)
Statements of Comprehensive Income
Net income		(47,606)
Other comprehensive income (loss), net of tax:		(28,766)
Comprehensive loss		(76,372)
Predecessor | Non-Guarantors
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		26,775
Sales - third party		135,190
Net sales		161,965
Cost of sales		147,818
Gross profit		14,147
Research and development		0
Selling and administrative expenses		11,849
Impairments		0
Rationalizations		2,168
Operating loss		130
Other (income) expense, net		84
Interest expense - affiliate		0
Interest expense - third party		94
Interest income - affiliate		0
Interest income		(73)
Loss before provision for income taxes		25
(Benefit) provision for income taxes		183
Equity in loss of subsidiary		0
Net loss		(158)
Statements of Comprehensive Income
Net income		(158)
Other comprehensive income (loss), net of tax:		(28,830)
Comprehensive loss		(28,988)
Predecessor | Consolidating Entries and Eliminations
Condensed Financial Statements, Captions [Line Items]
Sales - affiliates		(77,959)
Sales - third party		0
Net sales		(77,959)
Cost of sales		(77,959)
Gross profit		0
Research and development		0
Selling and administrative expenses		0
Impairments		0
Rationalizations		0
Operating loss		0
Other (income) expense, net		0
Interest expense - affiliate		(160)
Interest expense - third party		0
Interest income - affiliate		160
Interest income		0
Loss before provision for income taxes		0
(Benefit) provision for income taxes		0
Equity in loss of subsidiary		47,764
Net loss		47,764
Statements of Comprehensive Income
Net income		47,764
Other comprehensive income (loss), net of tax:		57,596
Comprehensive loss		$ 105,360