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Note 10 - Commitments and Contingencies - Operating Lease Obligations (Details) - USD ($)
Jun. 30, 2023
Dec. 31, 2022
Remainder of 2023 $ 392,000  
2024 552,000  
Total lease payments 944,000  
Less present value discount (53,000)  
Other Liabilities [Member]    
Operating Lease, Liability $ 891,000 $ 343,000