BUSINESS SEGMENTS (Details)	3 Months Ended								12 Months Ended
	Dec. 31, 2017 USD ($)	Sep. 24, 2017 USD ($)	Jun. 25, 2017 USD ($)	Mar. 26, 2017 USD ($)	Dec. 25, 2016 USD ($)	Sep. 25, 2016 USD ($)	Jun. 26, 2016 USD ($)	Mar. 27, 2016 USD ($)	Dec. 31, 2017 USD ($) segment	Dec. 25, 2016 USD ($)	Dec. 27, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment									3
Revenues	$ 75,700,827	$ 71,281,674	$ 68,773,862	$ 56,843,687	$ 64,278,864	$ 67,407,350	$ 62,615,014	$ 59,550,986	$ 272,600,050	$ 253,852,214	$ 217,533,856
Depreciation									592,317	486,682	338,707
Amortization									5,699,641	6,246,659	5,205,033
Operating income									17,760,768	15,535,817	11,972,689
Capital expenditures									(1,145,757)	(938,943)	(563,169)
Total Assets	104,632,889				81,214,134				104,632,889	81,214,134
Commercial
Segment Reporting Information [Line Items]
Revenues									74,151,992	88,819,561	87,625,556
Multifamily
Segment Reporting Information [Line Items]
Revenues									71,806,700	57,995,271	43,196,739
Professional
Segment Reporting Information [Line Items]
Revenues									126,641,358	107,037,382	86,711,561
Operating Segments | Commercial
Segment Reporting Information [Line Items]
Depreciation									106,867	92,701	92,750
Amortization									312,054	458,101	697,182
Operating income									4,304,018	5,717,240	5,386,764
Capital expenditures									(53,969)	(98,077)	(148,913)
Total Assets	18,075,307				21,574,855				18,075,307	21,574,855
Operating Segments | Multifamily
Segment Reporting Information [Line Items]
Depreciation									109,085	60,818	45,717
Amortization									0	62,847	150,833
Operating income									11,553,163	8,781,822	6,021,124
Capital expenditures									(139,309)	(228,153)	(88,053)
Total Assets	11,678,908				9,320,335				11,678,908	9,320,335
Operating Segments | Professional
Segment Reporting Information [Line Items]
Depreciation									179,809	154,447	80,674
Amortization									5,378,992	5,725,711	4,357,018
Operating income									8,518,293	6,385,934	5,997,646
Capital expenditures									(564,987)	(103,864)	(151,753)
Total Assets	67,089,681				39,548,308				67,089,681	39,548,308
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Depreciation									196,556	178,716	119,566
Amortization									8,595	0	0
Capital expenditures									(387,492)	(508,849)	(174,450)
Total Assets	$ 7,788,993				$ 10,770,636				7,788,993	10,770,636
Corporate, Non-Segment | Selling and Marketing Expense
Segment Reporting Information [Line Items]
Operating income									(541,160)	(99,242)	0
Corporate, Non-Segment | General and Administrative Expense
Segment Reporting Information [Line Items]
Operating income									$ (6,073,546)	$ (5,249,937)	$ (5,432,845)