Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016	Jul. 02, 2017	Jul. 03, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net income	$ 8,970	$ 3,813	$ 13,742	$ 7,685
Basic Earnings Per Common Share (EPS), Shares	16,497,000	16,424,000	16,478,000	16,403,000
Basic EPS, Per Share Amount	$ 0.54	$ 0.23	$ 0.83	$ 0.47
Dilutive securities, common stock options, Shares	265,000	171,000	248,000	135,000
Dilutive securities, common stock options, Per Share Amount	$ (0.00)	$ (0.00)	$ 0.01	$ 0
Diluted EPS, Shares	16,762,000	16,595,000	16,726,000	16,538,000
Diluted EPS, Per Share Amount	$ 0.54	$ 0.23	$ 0.82	$ 0.46
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive options and RSUs, shares			173,840
RSU Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive options and RSUs, shares				136,041