Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Net Revenues	$ 558,183	$ 550,642	$ 666,011
Cost of Sales	455,363	444,449	565,219
Gross Profit	102,820	106,193	100,792
Selling, General and Administrative Expenses	79,435	77,443	83,796
Goodwill Impairment	0	0	57,243
Intangible Asset Impairment	0	0	32,937
Restructuring Charges	8,360	182	2,125
Operating Income (Loss)	15,025	28,568	(75,309)
Interest Expense	(8,261)	(8,274)	(18,709)
Gain on Divestitures, Net	0	17,604	0
Loss on Extinguishment of Debt	0	0	(14,720)
Other Income, Net	845	215	2,148
Income (Loss) Before Taxes	7,609	38,113	(106,590)
Income Tax (Benefit) Expense	(12,468)	12,852	(31,711)
Net Income (Loss)	$ 20,077	$ 25,261	$ (74,879)
Earnings (Loss) Per Share
Basic earnings (loss) per share (in dollars per share)	$ 1.78	$ 2.27	$ (6.78)
Diluted earnings (loss) per share (in dollars per share)	$ 1.74	$ 2.24	$ (6.78)
Weighted-Average Number of Shares Outstanding
Basic (in shares)	11,290	11,151	11,047
Diluted (in shares)	11,558	11,299	11,047