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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Incremental Costs of Obtaining a Contract, Deferred During Period $ 197,000 $ 70,000 $ 311,000 $ 233,000  
Capitalized Contract Cost, Net, Noncurrent 1,196,000   1,196,000   $ 1,453,000
Capitalized Contract Cost, Impairment Loss $ 0 $ 7,000 34,000 $ 15,000  
Asset Impairment Charges     $ 0   $ 0
Minimum [Member]          
Capitalized Contract Cost, Amortization Period (Year) 3 years   3 years    
Maximum [Member]          
Capitalized Contract Cost, Amortization Period (Year) 5 years   5 years