Note 7 - Other Assets (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Liability, Defined Benefit Plan, Noncurrent | $ 19,303 | $ 18,431 | |
| Cash Surrender Value, Fair Value Disclosure | 17,800 | 16,400 | |
| Increase (Decrease) in Cash Surrender Value | 1,400 | 1,300 | $ 1,300 |
| Investments Held in Rabbi Trust [Member] | |||
| Debt Securities, Available-for-Sale, Amortized Cost | 600 | 600 | |
| Debt Securities, Available-for-Sale | 600 | 600 | |
| Supplemental Employee Retirement Plan [Member] | |||
| Liability, Defined Benefit Plan, Noncurrent | 18,900 | 18,000 | |
| Investments, Fair Value Disclosure | $ 18,400 | $ 17,000 | |
| X | ||||||||||
- Definition The amount of increase (decrease) in the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). No definition available.
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| X | ||||||||||
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent. 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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