Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement [Abstract]
Net sales	$ 212,226	$ 163,746
Cost of products sold (exclusive of depreciation and amortization shown separately below)	159,754	129,317
Selling, general and administrative	20,712	12,001
Depreciation and amortization	17,348	8,494
Restructuring and impairment charges	2,538
Income from operations	11,874	13,934
Interest expense	16,422	5,938
Other (income) expense, net	(1,129)	1,400
Income(loss) before provision (benefit) for income taxes and share of net income from joint venture	(3,419)	6,596
Provision (benefit) expense for income taxes	(720)	1,456
Share of net income from joint venture	1,400	861
Net (loss) income	(1,299)	6,001
Other comprehensive income (loss):
Change in fair value of interest rate hedge	(1,002)	(1,564)
Foreign currency translation gain (loss)	6,719	(16,293)
Comprehensive income (loss)	$ 4,418	$ (11,856)
Basic income (loss) per share:
Net income (loss)	$ (0.05)	$ 0.32
Weighted average shares outstanding	26,869	18,996
Diluted income (loss) per share:
Net income (loss)	$ (0.05)	$ 0.31
Weighted average shares outstanding	26,869	19,380
Cash dividends per common share	$ 0.07	$ 0.07