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Note 9 - Significant Risk Concentrations (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Accounts Receivable, after Allowance for Credit Loss, Current $ 4,338,000   $ 4,338,000   $ 3,985,000
Significant Supplier Incentive Earnings Program, Percentage of Earnings Recorded As an Offset to Marketing Expense   50.00%      
Partner Solutions [Member]          
Significant Supplier Incentive Earnings Program, Percentage of Earnings Recorded As Reduction of Cost of Revenue 100.00% 50.00%      
Significant Supplier Incentive Earnings Program, Adjustment to Reduce Cost of Revenue $ 200,000        
Significant Supplier Incentive Earnings Program, Adjustment to Reduce Cost of Revenue, Previously Awarded but Unspent Funds 0.1        
GES Manufacturing [Member]          
Accounts Receivable, after Allowance for Credit Loss, Current $ 504,000   $ 504,000 $ 900,000  
GES Manufacturing [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]          
Concentration Risk, Percentage     14.00% 17.00%