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Note 14 - Financing Agreements - Debt Instrument Redemption (Details)
12 Months Ended
Dec. 31, 2021
Rate
Senior Notes due November 15, 2027 [Member]  
2021 100.00%
Senior Notes due June 15, 2028 [Member]  
2021 100.00%
Senior Notes Due July 15, 2029 [Member]  
2021 100.00%
Senior Notes DueSeptember 1, 2030 [Member]  
2021 100.00%
Senior Notes due February 15, 2032 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period One [Member] | Senior Notes due April 15, 2025 [Member]  
2021 102.875%
Debt Instrument, Redemption, Period Two [Member] | Senior Notes due April 15, 2025 [Member]  
2021 101.438%
Debt Instrument, Redemption, Period Two [Member] | Senior Notes due November 15, 2027 [Member]  
2021 102.688%
Debt Instrument, Redemption, Period Three [Member] | Senior Notes due April 15, 2025 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Three [Member] | Senior Notes due November 15, 2027 [Member]  
2021 101.344%
Debt Instrument, Redemption, Period Three [Member] | Senior Notes due June 15, 2028 [Member]  
2021 102.813%
Debt Instrument, Redemption, Period Four [Member] | Senior Notes due April 15, 2025 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Four [Member] | Senior Notes due November 15, 2027 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Four [Member] | Senior Notes due June 15, 2028 [Member]  
2021 101.406%
Debt Instrument, Redemption, Period Four [Member] | Senior Notes Due July 15, 2029 [Member]  
2021 101.50%
Debt Instrument, Redemption, Period Five [Member] | Senior Notes due November 15, 2027 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Five [Member] | Senior Notes due June 15, 2028 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Five [Member] | Senior Notes Due July 15, 2029 [Member]  
2021 100.75%
Debt Instrument, Redemption, Period Six [Member] | Senior Notes due November 15, 2027 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Six [Member] | Senior Notes due June 15, 2028 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Six [Member] | Senior Notes Due July 15, 2029 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Six [Member] | Senior Notes DueSeptember 1, 2030 [Member]  
2021 102.125%
Debt Instrument, Redemption, Period Seven [Member] | Senior Notes due June 15, 2028 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Seven [Member] | Senior Notes Due July 15, 2029 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Seven [Member] | Senior Notes DueSeptember 1, 2030 [Member]  
2021 101.417%
Debt Instrument, Redemption, Period Seven [Member] | Senior Notes due February 15, 2032 [Member]  
2021 102.25%
Debt Instrument, Redemption, Period Eight [Member] | Senior Notes Due July 15, 2029 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Eight [Member] | Senior Notes DueSeptember 1, 2030 [Member]  
2021 100.708%
Debt Instrument, Redemption, Period Eight [Member] | Senior Notes due February 15, 2032 [Member]  
2021 101.50%
Debt Instrument, Redemption, Period Nine [Member] | Senior Notes DueSeptember 1, 2030 [Member]  
2021 100.00%
Debt Instrument, Redemption, Period Nine [Member] | Senior Notes due February 15, 2032 [Member]  
2021 100.75%
Debt Instrument, Redemption, Period Ten [Member] | Senior Notes due February 15, 2032 [Member]  
2021 100.00%
Debt Instrument, Redemption Period Eleven [Member] | Senior Notes due February 15, 2032 [Member]  
2021 100.00%