MARKETABLE SECURITIES (Details) - Common Stock [Member] - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Net Investment Income [Line Items]
Cost	$ 10,271,000	$ 53,475,000
Gross unrealized gains	383,000	32,000
Gross unrealized losses	(4,064,000)	(13,127,000)
Fair value	$ 6,590,000	$ 40,380,000