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BUSINESS SEGMENTS (Reconciliation of Revenue and Operating Income) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019	Sep. 27, 2020	Sep. 29, 2019	Dec. 29, 2019
Segment Reporting Information [Line Items]
Revenues	$ 71,518,691	$ 79,364,306	$ 208,192,454	$ 221,998,263
Depreciation	206,721	204,273	653,199	608,119
Amortization	1,064,230	992,480	3,476,416	3,024,381
Operating income	3,648,068	6,477,112	220,698	15,484,578
Capital expenditures	63,212	860,264	1,960,179	1,534,016
Total assets	129,101,681		129,101,681		$ 115,586,044
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Revenues	19,156,485	29,470,693	50,964,763	73,043,258
Depreciation	54,549	50,957	163,685	140,490
Operating income	3,346,316	5,523,769	7,159,432	12,464,689
Capital expenditures	25,000	204,442	68,273	244,321
Total assets	15,052,163		15,052,163		16,785,163
Operating Segments | Professional
Segment Reporting Information [Line Items]
Revenues	34,041,738	31,506,017	107,035,087	93,421,017
Depreciation	100,727	82,201	309,467	251,152
Amortization	1,004,964	986,274	3,353,128	3,005,618
Operating income	1,793,937	2,144,549	(2,007,213)	6,190,331
Capital expenditures	28,693	77,809	102,591	474,668
Total assets	83,800,034		83,800,034		72,623,242
Operating Segments | Light Industrial
Segment Reporting Information [Line Items]
Revenues	18,320,468	18,387,596	50,192,604	55,533,988
Depreciation	22,733	23,663	74,887	73,673
Operating income	1,272,796	1,174,142	3,240,347	3,514,758
Capital expenditures	9,519	76,103	12,720	83,734
Total assets	15,733,645		15,733,645		15,223,581
Home office
Segment Reporting Information [Line Items]
Depreciation	28,712	47,452	105,160	142,804
Amortization	59,266	6,206	123,288	18,763
Capital expenditures	0	501,910	1,776,595	731,293
Total assets	14,515,839		14,515,839		$ 10,954,058
Home office | Selling and Marketing Expense
Segment Reporting Information [Line Items]
Operating income	(186,549)	(131,389)	(426,359)	(399,370)
Home office | General and Administrative Expense
Segment Reporting Information [Line Items]
Operating income	(2,654,534)	(2,233,959)	(7,821,611)	(6,285,830)
Home office | Contingent Consideration
Segment Reporting Information [Line Items]
Operating income	$ 76,102	$ 0	$ 76,102	$ 0

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