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Note O - Related Party Transactions and Arrangements (Details Textual) - USD ($)
6 Months Ended 12 Months Ended
Aug. 25, 2021
Jun. 30, 2024
Dec. 31, 2023
Accounts Receivable, after Allowance for Credit Loss   $ 3,674,000 $ 2,269,000
Park Place Parking [Member]      
Accounts Receivable, after Allowance for Credit Loss   200,000 100,000
Color Up and Certain Member Entities of Color Up [Member]      
Accounts Payable and Accrued Liabilities     500,000
Color Up and Certain Member Entities of Color Up [Member] | Tax Return Preparation Services [Member]      
Related Party Transaction, Amounts of Transaction   $ 200,000 $ 100,000
Affiliate of Bombe Asset Management LLC [Member]      
License Fee, Monthly $ 5,000