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Marketable Securities (Details Narrative) - USD ($)
 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Marketable Securities [Line Items]      
Held value of marketable securities $ 6,507,000   $ 7,631,000
Fair Value 6,507,000   7,631,000
Short-Term Investments 6,507,000   7,631,000
Net gain recognized during the period on equity securities (177,000) $ 109,000  
Net gains and losses recognized during the period on equity securities sold during the period (218,000) (87,000)  
Unrealized gains and losses recognized during the reporting period on equity securities still held at the reporting date 41,000 $ 196,000  
Mutual Funds [Member]      
Marketable Securities [Line Items]      
Fair Value 6,507,000   7,631,000
Short-Term Investments $ 6,507,000   $ 7,631,000