Segment Reporting - Reconcilliation of Segment Data to the Consolidated Financial Statements (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales		$ 199,703	$ 249,492	$ 421,931	$ 502,902
Operating income (loss)		(51,229)	(71,891)	(56,864)	(79,213)
Interest expense, net		(10,374)	(9,888)	(20,920)	(19,840)
Other expense, net		3,963	1,590	(2,262)	908
Loss before income taxes and equity in earnings of joint venture		(57,640)	(80,189)	(80,046)	(98,145)
Equity in earnings of joint venture		451	1,794	1,326	3,701
Consolidated loss before income taxes		(57,189)	(78,395)	(78,720)	(94,444)
Capital Expenditures		1,234	2,287	3,295	4,299
Depreciation and amortization		6,312	6,533	12,667	12,990
Other
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales		0	0	0	0
Operating income (loss)	[1]	(2,981)	(3,403)	(6,842)	(6,000)
Capital Expenditures		0	0	0	0
Depreciation and amortization		0	0	0	0
Plastics segment
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales		33,375	35,397	67,063	69,744
Operating income (loss)		1,748	1,667	2,978	3,174
Capital Expenditures		521	428	745	562
Depreciation and amortization		425	430	886	831
Metals Segment [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Net Sales		166,328	214,095	354,868	433,158
Operating income (loss)		(49,996)	(70,155)	(53,000)	(76,387)
Capital Expenditures		713	1,859	2,550	3,737
Depreciation and amortization		$ 5,887	$ 6,103	$ 11,781	$ 12,159

[1] “Other” – Operating loss includes the costs of executive, legal and elements of the finance departments which are shared by both the Metals and Plastics segments.