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BUSINESS SEGMENTS (Details)	3 Months Ended								12 Months Ended
	Dec. 29, 2019 USD ($)	Sep. 29, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 30, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jul. 01, 2018 USD ($)	Apr. 01, 2018 USD ($)	Dec. 29, 2019 USD ($) segment	Dec. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment									3
Revenues	$ 72,315,285	$ 79,364,306	$ 73,857,890	$ 68,776,067	$ 71,999,881	$ 77,062,137	$ 70,945,438	$ 66,855,470	$ 294,313,548	$ 286,862,926	$ 272,600,050
Depreciation									830,299	746,443	592,317
Amortization									3,989,957	4,298,044	5,699,641
Operating income									19,661,488	24,259,685	17,760,768
Capital expenditures									(2,229,509)	(923,994)	(1,145,757)
Total Assets	115,586,044				100,268,803				115,586,044	100,268,803
Real Estate
Segment Reporting Information [Line Items]
Revenues									96,421,676	86,874,241	71,806,700
Professional
Segment Reporting Information [Line Items]
Revenues									123,342,647	119,299,424	126,641,358
Light Industrial
Segment Reporting Information [Line Items]
Revenues									74,549,225	80,689,261	74,151,992
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Depreciation									197,029	169,682	109,085
Operating income									16,381,823	14,775,846	11,553,163
Capital expenditures									(251,461)	(124,643)	(139,309)
Total Assets	16,785,163				12,647,505				16,785,163	12,647,505
Operating Segments | Professional
Segment Reporting Information [Line Items]
Depreciation									341,529	273,691	179,809
Amortization									3,964,878	4,168,463	5,378,992
Operating income									7,702,175	7,967,368	8,518,293
Capital expenditures									(582,573)	(474,670)	(564,987)
Total Assets	72,623,242				62,403,104				72,623,242	62,403,104
Operating Segments | Light Industrial
Segment Reporting Information [Line Items]
Depreciation									101,889	101,124	106,867
Amortization									0	110,251	312,054
Operating income									4,776,369	5,583,999	4,304,018
Capital expenditures									(152,632)	(119,886)	(53,969)
Total Assets	15,223,581				16,022,618				15,223,581	16,022,618
Home office
Segment Reporting Information [Line Items]
Depreciation									189,852	201,946	196,556
Amortization									25,079	19,330	8,595
Capital expenditures									(1,242,843)	(204,795)	(387,492)
Total Assets	$ 10,954,058				$ 9,195,576				10,954,058	9,195,576
Home office | Selling and Marketing Expense
Segment Reporting Information [Line Items]
Operating income									(516,190)	(666,472)	(541,160)
Home office | General and Administrative Expense
Segment Reporting Information [Line Items]
Operating income									(8,682,689)	(7,176,363)	(6,299,289)
Home office | Contingent Consideration
Segment Reporting Information [Line Items]
Operating income									$ 0	$ 3,775,307	$ 225,743

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