Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Deferred Tax Assets, Valuation Allowance | $ 0 | $ 0 | $ 0 | ||
| Income Tax Expense (Benefit) | 16,448 | $ 7,663 | (11,203) | $ 17,602 | |
| Deferred Income Tax Liabilities, Net | 228,433 | 228,433 | 239,636 | ||
| Texas Margin Tax [Member] | |||||
| Income Tax Expense (Benefit) | 0 | $ 0 | |||
| Texas Margin Tax [Member] | Income Tax Jurisdiction, Domestic State and Local [Member] | |||||
| Deferred Income Tax Liabilities, Net | $ 9,900 | $ 9,900 | $ 9,700 | ||
| X | ||||||||||
- Definition Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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