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Note 13 - Financial Instruments (Details Textual) - USD ($)
$ in Thousands, shares in Millions
12 Months Ended
Feb. 26, 2021
Dec. 31, 2023
Dec. 31, 2022
Derivatives Hedging Instruments   $ 0 $ 0
Fair Value, Inputs, Level 2 [Member]      
Long-Term Debt, Fair Value   396,000 271,000
Forward Contracts [Member]      
Foreign Currency Contract, Asset, Fair Value Disclosure   3,000 1,000
Foreign Currency Contracts, Liability, Fair Value Disclosure   0 1,000
Series A Preferred Stock [Member]      
Stock Repurchased During Period, Shares (in shares) 1    
Remaining Embedded Conversion Features And Term Extension Option Net Expense $ 2,000    
Series B Preferred Stock [Member]      
Stock Issued During Period Number Of New Shares Exchanged (in shares) 1    
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]      
Derivative Asset, Notional Amount   $ 279,000 $ 308,000