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Note 6 - Debt and Credit Facilities (Details Textual) - USD ($)
$ in Millions
3 Months Ended
Mar. 13, 2026
Mar. 31, 2026
Mar. 31, 2025
Line of Credit Facility [Line Items]      
Loss on early extinguishment of debt   $ 1 $ 0
Term Loan Credit Agreement [Member] | Term Loans [Member]      
Line of Credit Facility [Line Items]      
Debt Instrument, Face Amount   $ 50  
Payment of principal amount $ 50    
Prepayment premium percentage 1.00% 1.00%  
Accrued uncapitalized interest $ 1    
Loss on early extinguishment of debt   $ 1  
Refinancing Term Loans [Member]      
Line of Credit Facility [Line Items]      
Debt Instrument, Face Amount   $ 450