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Note 10 - CUSTOMER AND GEOGRAPHIC INFORMATION - Revenue Percentage by Major Customers (Details) - Customer Concentration Risk [Member]
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Revenue Benchmark [Member] | Customer A [Member]          
Concentration risk   15.00%     14.00%
Revenue Benchmark [Member] | Customer D [Member]          
Concentration risk 29.00%     31.00% 10.00%
Accounts Receivable [Member] | Customer C [Member]          
Concentration risk     15.00%    
Accounts Receivable [Member] | Customer D [Member]          
Concentration risk     29.00% 43.00%