Consolidated Statement of Stockholders' Equity - USD ($)	Common Stock	Additional Paid-In Capital	Retained Earnings / Accumulated Deficit	Total
Beginning Balance, Shares at Dec. 28, 2013	34,841,579
Beginning Balance, Amount at Dec. 28, 2013	$ 34,841	$ 39,697,063	$ (34,136,137)	$ 5,665,451
Issuance of warrant, Amount		246,189		246,189
Exercise of stock options, Shares	178,238
Exercise of stock options, Amount	$ 178	466,971		467,149
Issuance of unvested restricted stock, Shares	395,333
Issuance of unvested restricted stock, Amount	$ 395	791		1,186
Unvested restricted stock, Shares	(395,333)
Unvested restricted stock, Amount	$ (395)	(791)		(1,186)
Share-based compensation, Shares	28,333
Share-based compensation, Amount	$ 29	2,861,264		2,861,293
Stock issued to settle outstanding payable balance, Shares	42,202
Stock issued to settle outstanding payable balance, Amount	$ 42	146,452		146,494
Net loss			(5,388,185)	(5,388,185)
Ending Balance, Shares at Jan. 03, 2015	35,090,352
Ending Balance, Amount at Jan. 03, 2015	$ 35,090	43,487,623	(39,524,322)	3,998,391
Issuance of common stock, net of offering costs, Amount	533,334
Issuance of warrant, Amount	$ 534	1,974,359		1,974,893
Exercise of stock options, Shares	40,236
Exercise of stock options, Amount	$ 40	94,806		94,846
Vested restricted stock, Shares	228,000
Vested restricted stock, Amount	$ 228	(228)		0
Share-based compensation, Shares	111,667
Share-based compensation, Amount	$ 112	1,977,499		1,977,611
Net loss			(2,771,067)	(2,771,067)
Ending Balance, Shares at Jan. 02, 2016	36,003,589
Ending Balance, Amount at Jan. 02, 2016	$ 36,004	47,534,059	(42,295,389)	5,274,674
1 for 3 reverse stock split, isssuance due to fractional shares round up, Shares	1,632
1 for 3 reverse stock split, isssuance due to fractional shares round up, Amount	$ 2	(2)		0
Issuance of common stock, Shares	1,245,227
Issuance of common stock, net of offering costs, Amount	$ 1,245	5,716,230		5,717,475
Exercise of stock options, Shares	280,086
Exercise of stock options, Amount	$ 280	716,332		716,612
Vested restricted stock, Shares	13,997
Vested restricted stock, Amount	$ 14	(14)		0
Share-based compensation, Amount		1,193,782		1,193,782
Net loss			(2,928,185)	(2,928,185)
Ending Balance, Shares at Dec. 31, 2016	37,544,531
Ending Balance, Amount at Dec. 31, 2016	$ 37,545	$ 55,160,387	$ (45,223,574)	$ 9,974,358