OTHER INVESTMENTS (Details) - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Schedule of Investments [Line Items]
Other investments	$ 4,940,403	$ 5,585,666
Real estate and related [Member]
Schedule of Investments [Line Items]
Other investments	3,061,000	3,378,000
Diversified businesses [Member]
Schedule of Investments [Line Items]
Other investments	1,844,000	2,043,000
Technology and communications [Member]
Schedule of Investments [Line Items]
Other investments	0	130,000
Other (private bank) [Member]
Schedule of Investments [Line Items]
Other investments	$ 35,000	$ 35,000