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Note 3 - Long-term Debt (Details Textual) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Nov. 30, 2020
--- | --- | --- | ---
Line of Credit Facility, Maximum Borrowing Capacity | $ 30.0 |  |
Letters of Credit Outstanding, Amount | 16.1 | $ 18.5 |
Line of Credit Facility, Remaining Borrowing Capacity | 13.9 |  |
Line of Credit Facility, Dividends Payment, Maximum | $ 150.0 |  |
Line Of Credit Facility Dividend Restrictions Percentage Of Net Income Limit | 25.00% |  |
Line of Credit Facility Dividend Restrictions Percentage of Net Income Limit1 | 25.00% |  |
Line of Credit Facility, Waiver to Pay Dividends, Maximum | $ 80.0 | $ 80.0 | $ 60.0
Credit Facility [Member] |  |  |
Long-Term Debt, Weighted Average Interest Rate, at Point in Time | 7.50% |  |

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- Definition Line of credit facility dividend restrictions percentage of net income limit. + References No definition available. + Details
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- Definition The maximum amount of dividends that can be paid under the credit facility. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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