CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($)	3 Months Ended		6 Months Ended
	Jun. 25, 2016	Jun. 27, 2015	Jun. 25, 2016	Jun. 27, 2015
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net sales	$ 92,871,671	$ 82,595,230	$ 162,321,574	$ 145,890,601
Cost of sales	70,459,366	67,127,172	124,748,612	118,977,517
Gross profit	22,412,305	15,468,058	37,572,962	26,913,084
Selling, general and administrative expenses	9,957,880	9,280,504	19,372,831	17,701,154
Other income	(20,940)	(220,357)	(57,416)	(298,515)
Operating income	12,475,365	6,407,911	18,257,547	9,510,445
Interest (income) expense	(36,701)	28,247	146,128	271,662
Income before income taxes	12,512,066	6,379,664	18,111,419	9,238,783
Income tax expense	4,215,894	2,033,000	6,055,894	2,959,000
Net income	8,296,172	4,346,664	12,055,525	6,279,783
Other comprehensive income (loss), net of tax	34,778	(17,990)	66,868	(30,400)
Comprehensive income	$ 8,330,950	$ 4,328,674	$ 12,122,393	$ 6,249,383
Income per share:
Basic (in dollars per share)	$ 0.49	$ 0.26	$ 0.71	$ 0.38
Diluted (in dollars per share)	$ 0.48	$ 0.26	$ 0.70	$ 0.37
Shares used in the computation of income per share:
Basic (in shares)	16,945,141	16,641,955	16,891,693	16,586,469
Diluted (in shares)	17,222,811	16,992,259	17,185,031	16,912,433