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Note 11 - Significant Customers / Concentration / Disaggregated Revenue - Concentration of Risk (Details) - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Revenue Benchmark [Member] | Customer A [Member]          
Concentration Risk, Percentage 22.00% 12.00% 17.00% 11.00%  
Revenue Benchmark [Member] | Customer B [Member]          
Concentration Risk, Percentage 26.00%   15.00%    
Accounts Receivable [Member] | Customer A [Member]          
Concentration Risk, Percentage     16.00%    
Accounts Receivable [Member] | Customer B [Member]          
Concentration Risk, Percentage     12.00%    
Accounts Receivable [Member] | Customer C [Member]          
Concentration Risk, Percentage         16.00%
Accounts Receivable [Member] | Customer D [Member]          
Concentration Risk, Percentage         11.00%