Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
Net sales	$ 125,632	$ 93,023	$ 334,840	$ 283,125
Cost of products sold (exclusive of depreciation and amortization shown separately below)	100,441	73,020	265,010	223,288
Selling, general and administrative	11,124	8,099	29,799	25,544
Acquisition related costs excluded from selling, general and administrative	5,651		7,080
Depreciation and amortization	5,864	4,110	13,824	12,935
Loss on disposal of assets		0		5
Income from operations	2,552	7,794	19,127	21,353
Interest expense	5,622	655	6,737	2,149
Other expense (income), net	1,557	(281)	1,769	84
Income (loss) before provision (benefit) for income taxes and share of net income in joint venture	(4,627)	7,420	10,621	19,120
Provision (benefit) for income taxes	(562)	2,368	4,247	6,427
Share of net income from joint venture	225		225
Net income (loss)	(3,840)	5,052	6,599	12,693
Other comprehensive income (loss):
Foreign currency translation (loss) gain	(9,068)	2,478	(10,432)	2,059
Comprehensive income (loss)	$ (12,908)	$ 7,530	$ (3,833)	$ 14,752
Basic income (loss) per common share:	$ (0.21)	$ 0.29	$ 0.36	$ 0.74
Weighted average shares outstanding	17,979	17,302	17,749	17,125
Diluted income (loss) per common share:	$ (0.21)	$ 0.29	$ 0.36	$ 0.74
Weighted average shares outstanding	17,979	17,450	18,120	17,180
Cash dividends per common share	$ 0.07	$ 0.06	$ 0.21	$ 0.12