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Note 2 - Revenue Recognition (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Accounts Receivable, after Allowance for Credit Loss, Current $ 185,820   $ 185,820   $ 182,714
Minimum [Member]          
Contract with Customer, Payment Term (Day)     30 days    
Maximum [Member]          
Contract with Customer, Payment Term (Day)     90 days    
Certain Customers in China [Member]          
Contract with Customer, Payment Term Required Prior to Shipping Products (Week)     14 days    
Certain Customers in China [Member] | Accrued Liabilities, Current [Member]          
Contract with Customer, Liability, Current $ 1,500   $ 1,500   $ 3,600
Product [Member]          
Percentage of Revenue 99.00% 98.00% 99.00% 98.00%  
Product Sales Through Distribution Arrangements [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]          
Concentration Risk, Percentage 77.00% 83.00% 79.00% 83.00%