Note 5 - Stockholders' Equity and Dilutive Equity Instruments - Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Balance at March 31, 2025 and 2024 | $ 1,110,365 | $ 1,055,153 | $ 1,111,185 | $ 1,037,697 |
| Unrealized gain on note receivable | 0 | 73 | 0 | 153 |
| Balance | 1,136,227 | 1,078,987 | 1,136,227 | 1,078,987 |
| AOCI Attributable to Parent [Member] | ||||
| Balance at March 31, 2025 and 2024 | 6,607 | 5,209 | 6,060 | 5,266 |
| Unrealized gain on note receivable | 0 | 73 | 0 | 153 |
| Balance | 7,273 | 5,062 | 7,273 | 5,062 |
| Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | ||||
| Before reclassifications | $ 666 | $ (220) | $ 1,213 | $ (357) |
| X | ||||||||||
- Definition Amount of gain (loss) on note receivable under other comprehensive income (loss). No definition available.
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| X | ||||||||||
- Definition Amount after tax, before reclassification adjustments of other comprehensive income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of equity (deficit) attributable to parent and noncontrolling interest. Excludes temporary equity. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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