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Note 1 - Organization and Accounting Policies - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Assets [Abstract] |  |
Prepayments and other | $ 12,374 | $ 12,434
Liabilities [Abstract] |  |
Accrued liabilities and other | $ 60,345 | $ 67,597
Derivative Asset, Statement of Financial Position [Extensible Enumeration] | Prepayments and other | Prepayments and other
Derivative asset | $ 0 | $ 403
Derivative Liability, Statement of Financial Position [Extensible Enumeration] | Accrued liabilities and other | Accrued liabilities and other
Derivative liability | $ 420 |
Liabilities, Fair Value Disclosure | 420 | $ 163
Assets, Fair Value Disclosure |  | 403
SARs liability |  | 163
Fair Value, Inputs, Level 1 [Member] |  |
Derivative asset | 0 | 0
Derivative liability | 0 |
Liabilities, Fair Value Disclosure | 0 | 0
Assets, Fair Value Disclosure |  | 0
SARs liability |  | 0
Fair Value, Inputs, Level 2 [Member] |  |
Derivative asset | 0 | 403
Derivative liability | 420 |
Liabilities, Fair Value Disclosure | 420 | 163
Assets, Fair Value Disclosure |  | 403
SARs liability |  | 163
Fair Value, Inputs, Level 3 [Member] |  |
Derivative asset | 0 | 0
Derivative liability | 0 |
Liabilities, Fair Value Disclosure | $ 0 | 0
Assets, Fair Value Disclosure |  | 0
SARs liability |  | $ 0

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