CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	3 Months Ended		9 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net sales	$ 64,818,118	$ 58,023,699	$ 210,708,719	$ 182,969,324
Cost of sales	52,175,728	46,736,407	171,153,245	149,153,869
Gross profit	12,642,390	11,287,292	39,555,474	33,815,455
Selling, general and administrative expenses	8,693,633	7,783,492	26,394,787	23,604,955
Other income	(110,133)	(299,148)	(408,648)	(398,343)
Operating income	4,058,890	3,802,948	13,569,335	10,608,843
Interest (income) expense, net	(72,004)	101,983	199,658	255,429
Income from continuing operations before income taxes	4,130,894	3,700,965	13,369,677	10,353,414
Income tax expense	1,334,000	1,232,000	4,293,000	3,405,000
Income from continuing operations	2,796,894	2,468,965	9,076,677	6,948,414
Discontinued operations:
Gain on sale of discontinued operations, net of tax				87,036
Operating loss from discontinued operations, net of tax				(1,654,459)
Loss from discontinued operations, net of tax				(1,567,423)
Net income	2,796,894	2,468,965	9,076,677	5,380,991
Other comprehensive income (loss), net of tax	(72,481)	(4,309)	(102,881)	16,733
Comprehensive income	$ 2,724,413	$ 2,464,656	$ 8,973,796	$ 5,397,724
Basic income (loss) per share:
Income from continuing operations (in dollars per share)	$ 0.17	$ 0.15	$ 0.54	$ 0.42
Loss from discontinued operations (in dollars per share)				(0.09)
Net income (in dollars per share)	0.17	0.15	0.54	0.33
Diluted income (loss) per share:
Income from continuing operations (in dollars per share)	0.16	0.15	0.53	0.41
Loss from discontinued operations (in dollars per share)				(0.09)
Net income (in dollars per share)	$ 0.16	$ 0.15	$ 0.53	$ 0.32
Shares used in the computation of income (loss) per share:
Basic (in shares)	16,764,923	16,385,403	16,663,607	16,311,598
Diluted (in shares)	17,062,801	16,762,994	16,984,060	16,714,412