Segment Reporting - Information by Reportable Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Summary of segment information
Net Sales	$ 222,228		$ 253,410
Operating loss	(5,635)		(7,322)
Capital Expenditures	2,061		2,012
Depreciation and amortization	6,355		6,457
Metals segment
Summary of segment information
Net Sales	188,540		219,063
Operating loss	(3,004)		(6,232)
Capital Expenditures	1,837		1,878
Depreciation and amortization	5,894		6,056
Plastics segment
Summary of segment information
Net Sales	33,688		34,347
Operating loss	1,230		1,507
Capital Expenditures	224		134
Depreciation and amortization	461		401
Other
Summary of segment information
Net Sales	0		0
Operating loss	(3,861)	[1]	(2,597)	[1]
Capital Expenditures	0		0
Depreciation and amortization	$ 0		$ 0

[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.