Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Income Statement [Abstract]
Net Revenues	$ 154,827	$ 140,938	$ 305,282	$ 277,235
Cost of Sales	122,799	114,669	246,499	225,961
Gross Profit	32,028	26,269	58,783	51,274
Selling, General and Administrative Expenses	21,194	19,646	40,521	40,399
Restructuring Charges	5,238	0	7,411	0
Operating Income	5,596	6,623	10,851	10,875
Interest Expense	(3,763)	(2,059)	(6,661)	(3,804)
Income Before Taxes	1,833	4,564	4,190	7,071
Income Tax Expense (Benefit)	242	741	(1)	1,133
Net Income	$ 1,591	$ 3,823	$ 4,191	$ 5,938
Earnings Per Share
Basic earnings per share (in dollars per share)	$ 0.14	$ 0.34	$ 0.37	$ 0.53
Diluted earnings per share (in dollars per share)	$ 0.14	$ 0.33	$ 0.36	$ 0.51
Weighted-Average Number of Common Shares Outstanding
Basic (in shares)	11,394	11,237	11,370	11,253
Diluted (in shares)	11,624	11,491	11,609	11,556