Quarterly report pursuant to Section 13 or 15(d)

MARKETABLE SECURITIES (Details)

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MARKETABLE SECURITIES (Details) - USD ($)
Mar. 31, 2024
Dec. 31, 2023
Fair Value [Member]    
Schedule of Investments [Line Items]    
Certificates of deposit $ 6,153,000 $ 6,077,000
Government securities 11,399,000 14,818,000
Fixed income mutual funds 7,737,000 7,676,000
Total marketable securities 25,289,000 28,571,000
Cost Basis [Member]    
Schedule of Investments [Line Items]    
Certificates of deposit 6,170,000 6,112,000
Government securities 11,357,000 14,701,000
Fixed income mutual funds 7,610,000 7,585,000
Total marketable securities 25,137,000 28,398,000
Gross Unrealized Gains [Member]    
Schedule of Investments [Line Items]    
Certificates of deposit  
Government securities 63,000 127,000
Fixed income mutual funds 127,000 91,000
Total marketable securities 190,000 218,000
Gross Unrealized Losses [Member]    
Schedule of Investments [Line Items]    
Certificates of deposit (17,000) (35,000)
Government securities (21,000) (10,000)
Fixed income mutual funds
Total marketable securities $ (38,000) $ (45,000)