CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 25, 2016	Dec. 27, 2015
Income Statement [Abstract]
Revenues	$ 272,600,050	$ 253,852,214	$ 217,533,856
Cost of services	204,198,052	193,778,848	169,627,150
Gross profit	68,401,998	60,073,366	47,906,706
Selling, general and administrative expenses	44,349,272	37,804,208	30,390,277
Depreciation and amortization	6,291,958	6,733,341	5,543,740
Operating income	17,760,768	15,535,817	11,972,689
Loss on extinguishment of debt	0	(404,119)	(438,507)
Interest expense, net	(3,253,134)	(3,961,617)	(2,995,645)
Change in fair value of put option	0	0	176,871
Income before income taxes	14,507,634	11,170,081	8,715,408
Income tax expense	8,659,200	4,287,674	3,368,000
Net (loss) income	$ 5,848,434	$ 6,882,407	$ 5,347,408
Net income per share:
Basic (in dollars per share)	$ 0.67	$ 0.85	$ 0.76
Diluted (in dollars per share)	$ 0.65	$ 0.82	$ 0.73
Weighted average shares outstanding:
Basic (in shares)	8,733,941	8,107,637	7,079,459
Diluted (in shares)	9,038,187	8,399,883	7,288,705