SELECTED QUARTERLY FINANCIAL INFORMATION (UNAUDITED) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Jan. 02, 2016	Oct. 03, 2015	Jul. 04, 2015	Apr. 04, 2015	Jan. 03, 2015	Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
SELECTED QUARTERLY FINANCIAL INFORMATION (UNAUDITED) [Abstract]
Net sales	$ 34,413,912	$ 36,239,500	$ 37,037,697	$ 36,876,842	$ 34,393,056	$ 35,803,405	$ 34,779,773	$ 35,849,126	$ 144,567,951	$ 140,825,360	$ 142,458,279
Gross margin	8,100,044	9,033,843	7,912,161	7,335,178	8,555,221	8,461,473	7,776,304	7,513,406	32,381,226	32,486,404	30,147,520
Selling and administrative expenses	5,749,442	5,584,222	7,056,139	5,963,695	5,670,503	4,892,600	4,988,364	5,216,289	24,353,498	20,767,756	19,761,199
Net (loss)/income	$ 1,740,776	$ 2,527,722	$ 584,594	$ 873,951	$ 2,033,271	$ 2,431,817	$ 1,693,503	$ 1,502,885	$ 5,727,043	$ 7,661,476	$ 6,901,921
Net (loss)/income per share [Abstract]
Basic (in dollars per share)	$ 0.28	$ 0.41	$ 0.09	$ 0.14	$ 0.33	$ 0.39	$ 0.27	$ 0.24	$ 0.92	$ 1.23	$ 1.11
Diluted (in dollars per share)	$ 0.28	$ 0.41	$ 0.09	$ 0.14	$ 0.33	$ 0.39	$ 0.27	$ 0.24	$ 0.92	$ 1.23	$ 1.11
Weighted average shares outstanding [Abstract]
Basic (in shares)	6,246,571	6,245,099	6,244,051	6,244,088	6,231,729	6,223,140	6,222,676	6,222,213	6,245,057	6,225,068	6,220,928
Diluted (in shares)	6,246,571	6,245,099	6,244,051	6,244,088	6,231,729	6,240,396	6,239,866	6,239,149	6,245,057	6,237,914	6,237,758