Note 11 - Treasury Stock and Repurchase Program - Treasury Stock at Cost (Details) - USD ($) |
1 Months Ended | 3 Months Ended | |||
|---|---|---|---|---|---|
Jul. 31, 2026 |
Jun. 30, 2026 |
May 31, 2026 |
Jul. 31, 2026 |
Jul. 31, 2025 |
|
| Balance (in shares) | 613,807 | 613,807 | |||
| Balance, cost assigned | $ 16,575,000 | $ 16,575,000 | |||
| Balance, average cost per share (in dollars per share) | $ 27 | $ 27 | |||
| Balance, aggregate purchase price remaining under the program | $ 1,202,000 | $ 1,232,000 | $ 1,291,000 | $ 1,291,000 | |
| May 31, 2026 (in shares) | 300 | 906 | 1,714 | ||
| May 31, 2026 | $ 11,000 | $ 30,000 | $ 59,000 | 100,000 | $ 59,000 |
| May 31, 2026 (in dollars per share) | $ 35.7 | $ 33.24 | $ 34.05 | ||
| May 31, 2026 | $ 1,989,000 | $ 1,202,000 | $ 1,232,000 | $ 1,989,000 | |
| Balance (in shares) | 616,727 | 616,727 | |||
| Balance, cost assigned | $ 16,675,000 | $ 16,675,000 | |||
| Balance, average cost per share (in dollars per share) | $ 27.04 | $ 27.04 | |||
| Balance, aggregate purchase price remaining under the program | $ 1,989,000 | $ 1,202,000 | $ 1,232,000 | $ 1,989,000 | |
| X | ||||||||||
- Definition Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Total cost of shares repurchased divided by the total number of shares repurchased. No definition available.
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| X | ||||||||||
- Definition Number of previously issued common shares repurchased by the issuing entity and held in treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Represents the average cost per share. No definition available.
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