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Note 10 - Contingencies (Details Textual) - USD ($)
Nov. 02, 2022
Mar. 31, 2022
Jul. 31, 2020
Jan. 15, 2020
Jun. 30, 2021
Commonwealth of Pennsylvania vs Fluent LLC and Four Subsidiaries [Member] | Pending Litigation [Member] | Subsequent Event [Member]          
Loss Contingency, Damages Sought, Value Per Violation $ 1,000        
New York City Department of Finance [Member] | State and Local Jurisdiction [Member]          
Income Tax Examination, Penalties and Interest Adjustment Requested     $ 3,000,000.0 $ 8,200,000  
Income Tax Examination, Interest Adjustment Requested     $ 700,000 $ 2,000,000.0  
Income Tax Examination, Settlement   $ 1,700,000      
Compliance with New York Executive Law and New York General Business Law [Member]          
Loss Contingency Accrual, Ending Balance         $ 3,700,000