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Marketable EQUITY Securities (Details) - Common Stock [Member] - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Schedule of Investments [Line Items]    
Cost $ 7,086,000 $ 10,271,000
Gross unrealized gains 55,000 383,000
Gross unrealized losses (5,773,000) (4,064,000)
Fair value $ 1,368,000 $ 6,590,000