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BUSINESS SEGMENTS (Details)	3 Months Ended								12 Months Ended
	Dec. 30, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jul. 01, 2018 USD ($)	Apr. 01, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 24, 2017 USD ($)	Jun. 25, 2017 USD ($)	Mar. 26, 2017 USD ($)	Dec. 30, 2018 USD ($) segment	Dec. 31, 2017 USD ($)	Dec. 25, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment									3
Revenues	$ 71,999,881	$ 77,062,137	$ 70,945,438	$ 66,855,470	$ 75,700,827	$ 71,281,674	$ 68,773,862	$ 56,843,687	$ 286,862,926	$ 272,600,050	$ 253,852,214
Depreciation									746,443	592,317	486,682
Amortization									4,298,044	5,699,641	6,246,659
Operating income									24,259,685	17,760,768	15,535,817
Capital expenditures									(923,994)	(1,145,757)	(938,943)
Total Assets	100,268,803				104,632,889				100,268,803	104,632,889
Real Estate
Segment Reporting Information [Line Items]
Revenues									86,874,241	71,806,700	57,995,271
Professional
Segment Reporting Information [Line Items]
Revenues									119,299,424	126,641,358	107,037,382
Light Industrial
Segment Reporting Information [Line Items]
Revenues									80,689,261	74,151,992	88,819,561
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Depreciation									169,682	109,085	60,818
Amortization									0	0	62,847
Operating income									14,775,846	11,553,163	8,781,822
Capital expenditures									(124,643)	(139,309)	(228,153)
Total Assets	12,647,505				11,678,908				12,647,505	11,678,908
Operating Segments | Professional
Segment Reporting Information [Line Items]
Depreciation									273,691	179,809	154,447
Amortization									4,168,463	5,378,992	5,725,711
Operating income									7,967,368	8,518,293	6,385,934
Capital expenditures									(474,670)	(564,987)	(103,864)
Total Assets	62,403,104				67,089,681				62,403,104	67,089,681
Operating Segments | Light Industrial
Segment Reporting Information [Line Items]
Depreciation									101,124	106,867	92,701
Amortization									110,251	312,054	458,101
Operating income									5,583,999	4,304,018	5,717,240
Capital expenditures									(119,886)	(53,969)	(98,077)
Total Assets	18,992,392				18,075,307				18,992,392	18,075,307
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Depreciation									201,946	196,556	178,716
Amortization									19,330	8,595	0
Capital expenditures									(204,795)	(387,492)	(508,849)
Total Assets	$ 6,225,802				$ 7,788,993				6,225,802	7,788,993
Corporate, Non-Segment | Selling and Marketing Expense
Segment Reporting Information [Line Items]
Operating income									(666,472)	(541,160)	(99,242)
Corporate, Non-Segment | General and Administrative Expense
Segment Reporting Information [Line Items]
Operating income									$ (3,401,056)	$ (6,073,546)	$ (5,249,937)

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