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Note 12 - Borrowings and Financing Activities - Senior Notes due 2025 (Details) - Senior Notes - Senior Notes Due 2025 $ in Thousands | 1 Months Ended
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May 31, 2020 USD ($)
Debt Instrument, Face Amount | $ 525,000
Proceeds from Issuance of Long-term Debt | $ 515,600
Debt Instrument, Interest Rate, Stated Percentage | 6.625%
Debt Instrument, Redemption Price, Percentage | 100.00%
Debt Instrument, Basis Spread on Variable Rate | 0.50%
Percent of Stock With Ordinary Voting Rights That Company Must Retain In Order To Make Any Capital Stock Transactions | 80.00%

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