Stockholders' Equity - Summary of Activity in Stock Option Plan (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Jan. 02, 2016	Jan. 03, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Shares Available for Grant, Beginning Balance	770,782	854,117	476,545
Shares Available for Grant, Additional shares reserved		1,000	503,306
Shares Available for Grant, Options granted	(112,277)	(170,300)	(158,300)
Shares Available for Grant, Restricted stock granted	(286,294)	(227,905)	(62,225)
Shares Available for Grant, Options cancelled	66,707	174,870	27,957
Shares Available for Grant, Awards cancelled	66,000	146,000	79,890
Shares Available for Grant, Options expired		(7,000)	(13,056)
Shares Available for Grant, Ending Balance	504,918	770,782	854,117
Outstanding, Number of Shares, Beginning Balance	551,492	833,795	1,102,842
Number of Shares, Options granted	112,277	170,300	158,300
Number of Shares, Options exercised	(126,077)	(277,733)	(399,390)
Number of Shares, Options cancelled	(66,707)	(174,870)	(27,957)
Number of Shares, Ending Balance	470,985	551,492	833,795
Weighted Average Exercise Price, Beginning Balance	$ 6.92	$ 4.88	$ 3.97
Weighted Average Exercise Price, Options granted	13.71	9.38	8.61
Weighted Average Exercise Price, Options exercised	5.62	3.70	3.76
Weighted Average Exercise Price, Options cancelled	7.37	4.71	6.13
Weighted Average Exercise Price, Ending Balance	$ 8.69	$ 6.92	$ 4.88