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BUSINESS SEGMENTS (Reconciliation of Revenue and Operating Income) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 29, 2019	Sep. 30, 2018	Sep. 29, 2019	Sep. 30, 2018	Dec. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 79,364,306	$ 77,062,137	$ 221,998,263	$ 214,863,045
Depreciation	204,273	194,641	608,119	545,751
Amortization	992,480	1,052,896	3,024,381	3,255,674
Operating income	6,477,112	7,091,327	15,484,578	17,703,802
Capital expenditures	860,264	228,814	1,534,016	681,333
Total assets	105,993,250		105,993,250		$ 100,268,803
Operating Segments | Real Estate
Segment Reporting Information [Line Items]
Revenues	29,470,693	26,531,283	73,043,258	65,864,097
Depreciation	50,957	44,784	140,490	125,820
Operating income	5,523,769	4,958,373	12,464,689	11,285,951
Capital expenditures	204,442	37,681	244,321	114,990
Total assets	19,341,023		19,341,023		12,647,505
Operating Segments | Professional
Segment Reporting Information [Line Items]
Revenues	31,506,017	29,171,990	93,421,017	90,394,110
Depreciation	82,201	74,488	251,152	190,952
Amortization	986,274	1,047,510	3,005,618	3,132,372
Operating income	2,144,549	2,143,426	6,190,331	6,499,285
Capital expenditures	77,809	121,170	474,668	382,925
Total assets	61,100,018		61,100,018		62,403,104
Operating Segments | Light Industrial
Segment Reporting Information [Line Items]
Revenues	18,387,596	21,358,864	55,533,988	58,604,838
Depreciation	23,663	23,446	73,673	76,372
Amortization	0	0	0	110,251
Operating income	1,174,142	1,560,895	3,514,758	3,948,874
Capital expenditures	76,103	44,018	83,734	87,990
Total assets	18,765,095		18,765,095		18,992,392
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Depreciation	47,452	51,923	142,804	152,607
Amortization	6,206	5,386	18,763	13,051
Capital expenditures	501,910	25,945	731,293	95,428
Total assets	6,787,114		6,787,114		$ 6,225,802
Corporate, Non-Segment | Selling and Marketing Expense
Segment Reporting Information [Line Items]
Operating income	(131,389)	(212,877)	(399,370)	(541,467)
Corporate, Non-Segment | General and Administrative Expense
Segment Reporting Information [Line Items]
Operating income	(2,233,959)	(2,346,793)	(6,285,830)	(5,649,148)
Corporate, Non-Segment | Contingent Consideration
Segment Reporting Information [Line Items]
Operating income	$ 0	$ 988,303	$ 0	$ 2,160,307

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