Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net Revenues	$ 159,842	$ 138,690	$ 465,124	$ 415,925
Cost of Sales	128,726	112,603	375,225	338,563
Gross Profit	31,116	26,087	89,899	77,362
Selling, General and Administrative Expenses	20,956	18,676	61,476	59,075
Restructuring Charges	3,373	64	10,784	64
Operating Income	6,787	7,347	17,639	18,223
Interest Expense	(2,524)	(2,240)	(9,186)	(6,045)
Other Income	27	488	27	488
Income Before Taxes	4,290	5,595	8,480	12,666
Income Tax Expense	119	940	118	2,073
Net Income	$ 4,171	$ 4,655	$ 8,362	$ 10,593
Earnings Per Share
Basic earnings per share (in dollars per share)	$ 0.37	$ 0.41	$ 0.73	$ 0.94
Diluted earnings per share (in dollars per share)	$ 0.36	$ 0.41	$ 0.72	$ 0.92
Weighted-Average Number of Common Shares Outstanding
Basic (in shares)	11,404	11,241	11,382	11,276
Diluted (in shares)	11,683	11,486	11,639	11,556