CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2017	Jun. 25, 2016	Jul. 01, 2017	Jun. 25, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net sales	$ 95,465,787	$ 92,871,671	$ 164,140,486	$ 162,321,574
Cost of sales	76,362,685	70,459,366	132,041,607	124,748,612
Gross profit	19,103,102	22,412,305	32,098,879	37,572,962
Selling, general and administrative expenses	10,075,201	9,957,880	20,126,673	19,372,831
Other (income) expense	59,265	(20,940)	(10,215)	(57,416)
Operating income	8,968,636	12,475,365	11,982,421	18,257,547
Interest (income) expense	233,482	(36,701)	478,885	146,128
Income before income taxes	8,735,154	12,512,066	11,503,536	18,111,419
Income tax expense	2,433,274	4,215,894	3,338,671	6,055,894
Net income	6,301,880	8,296,172	8,164,865	12,055,525
Other comprehensive income, net of tax	10,522	34,778	31,790	66,868
Comprehensive income	$ 6,312,402	$ 8,330,950	$ 8,196,655	$ 12,122,393
Income per share:
Basic (in dollars per share)	$ 0.37	$ 0.49	$ 0.48	$ 0.71
Diluted (in dollars per share)	$ 0.37	$ 0.48	$ 0.48	$ 0.70
Shares used in the computation of income per share:
Basic (in shares)	17,155,898	16,945,141	17,127,502	16,891,693
Diluted (in shares)	17,157,871	17,222,811	17,129,475	17,185,031