Stockholders' Equity - Summary of Activity in Stock Option Plan (Details) - $ / shares	12 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Jan. 02, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Shares Available for Grant, Beginning Balance	504,918	770,782	854,117
Shares Available for Grant, Additional shares reserved	650,000		1,000
Shares Available for Grant, Options granted	(524,400)	(112,277)	(170,300)
Shares Available for Grant, Restricted stock granted	(141,692)	(286,294)	(227,905)
Shares Available for Grant, Options cancelled	73,694	66,707	174,870
Shares Available for Grant, Awards cancelled	32,039	66,000	146,000
Shares Available for Grant, Options expired			(7,000)
Shares Available for Grant, Ending Balance	594,559	504,918	770,782
Outstanding, Number of Shares, Beginning Balance	470,985	551,492	833,795
Number of Shares, Options granted	524,400	112,277	170,300
Number of Shares, Options exercised	(64,380)	(126,077)	(277,733)
Number of Shares, Options cancelled	(73,694)	(66,707)	(174,870)
Number of Shares, Ending Balance	857,311	470,985	551,492
Weighted Average Exercise Price, Beginning Balance	$ 8.69	$ 6.92	$ 4.88
Weighted Average Exercise Price, Options granted	9.90	13.71	9.38
Weighted Average Exercise Price, Options exercised	5.86	5.62	3.70
Weighted Average Exercise Price, Options cancelled	10.47	7.37	4.71
Weighted Average Exercise Price, Ending Balance	$ 9.49	$ 8.69	$ 6.92