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Note 2 - Revenue Recognition (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Accounts Receivable, after Allowance for Credit Loss, Current $ 179,858 $ 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 $ 2,800 $ 3,600  
Product [Member]      
Percentage of Revenue 99.00% 98.00% 97.00%
Product Sales Through Distribution Arrangements [Member] | Customer Concentration Risk [Member] | Revenue Benchmark [Member]      
Concentration Risk, Percentage 80.00% 83.00% 88.00%