Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net Revenues	$ 721,088	$ 629,307	$ 558,183
Cost of Sales	568,891	506,711	455,050
Gross Profit	152,197	122,596	103,133
Selling, General and Administrative Expenses	95,964	84,007	79,139
Restructuring Charges	0	14,671	8,360
Operating Income	56,233	23,918	15,634
Interest Expense	(18,290)	(13,024)	(8,870)
Loss on Extinguishment of Debt	(180)	(926)	0
Other Income, Net	0	303	845
Income Before Taxes	37,763	10,271	7,609
Income Tax Expense (Benefit)	5,302	1,236	(12,468)
Net Income	$ 32,461	$ 9,035	$ 20,077
Earnings Per Share
Basic earnings (loss) per share (in dollars per share)	$ 2.82	$ 0.79	$ 1.78
Diluted earnings (loss) per share (in dollars per share)	$ 2.75	$ 0.77	$ 1.74
Weighted-Average Number of Shares Outstanding
Basic (in shares)	11,518	11,390	11,290
Diluted (in shares)	11,792	11,659	11,558