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Note 10 - Debt - Short-term and Long-term Debt (Details) (Parentheticals) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
The 3.625% Senior Note [Member]    
Interest rate 3.625% 3.625%
Unamortized discount $ 9,800 $ 10,000
Interest rate 3.625% 3.625%
Unamortized discount $ 9,800 $ 10,000
The 4.125% Senior Note [Member]    
Interest rate 4.125% 4.125%
Unamortized discount (premium) $ 8,600 $ 9,400
Interest rate 4.125% 4.125%
The 4.000% Senior Note [Member]    
Interest rate 4.00% 4.00%
Unamortized discount $ 2,300 $ 2,800
Interest rate 4.00% 4.00%
Unamortized discount $ 2,300 $ 2,800
The 5.500% Senior Note [Member]    
Interest rate 5.50% 5.50%
Unamortized discount $ 3,900 $ 4,000
Interest rate 5.50% 5.50%
Unamortized discount $ 3,900 $ 4,000
The 5.750% Senior Notes [Member]    
Interest rate 5.75% 5.75%
Unamortized discount $ 9,900 $ 0
Interest rate 5.75% 5.75%
Unamortized discount $ 9,900 $ 0