UNAUDITED CONSOLIDATED STATEMENTS OF INCOME - USD ($)	3 Months Ended		6 Months Ended
	Jul. 01, 2018	Jun. 25, 2017	Jul. 01, 2018	Jun. 25, 2017
Revenues	$ 70,945,438	$ 68,773,862	$ 137,800,908	$ 125,617,550
Gross profit	19,192,279	17,227,279	36,502,210	30,898,515
Selling, general and administrative expenses	11,356,727	10,780,335	23,335,848	20,386,781
Depreciation and amortization	1,258,381	1,865,042	2,553,887	3,236,476
Operating income	6,577,171	4,581,902	10,612,475	7,275,258
Interest expense, net	(741,801)	(837,365)	(1,612,892)	(1,395,984)
Income (loss) before income taxes	5,835,370	3,744,537	8,999,583	5,879,274
Income tax expense	665,486	1,460,011	1,364,128	2,292,917
Net income (loss)	$ 5,169,884	$ 2,284,526	$ 7,635,455	$ 3,586,357
Net income per share:
Basic (in dollars per share)	$ 0.56	$ 0.26	$ 0.85	$ 0.41
Diluted (in dollars per share)	$ 0.54	$ 0.25	$ 0.82	$ 0.40
Weighted-average shares outstanding:
Basic (shares)	9,235,353	8,746,100	8,998,364	8,707,528
Diluted (shares)	9,538,545	9,050,596	9,301,370	8,986,136
Service
Revenues	$ 70,945,438	$ 68,773,862	$ 137,800,908	$ 125,617,550
Cost of services	$ 51,753,159	$ 51,546,583	$ 101,298,698	$ 94,719,035