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Employee Benefit Plans (Tables) | 12 Months Ended
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Apr. 30, 2025
Disclosure Text Block Supplement [Abstract] |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] | The following table summarizes information about stock option and SARs activity for the years ended April 30, 2025 and 2024:
|  | Stock Options and Stock Appreciation Rights |
|  |  |  |  | Weighted- Average |  |  | Grant Date |  |  | Weighted Average Remaining |  | Aggregate |
|  | Shares |  |  | Exercise Price |  |  | Fair Value |  |  | Contractual Term |  | Intrinsic Value |
Outstanding – April 30, 2023 |  |  | 243,625 |  |  | $ | 10.77 |  |  | $ | 2,624,779 |  |  | 0.8 years |  | $ | 1,592,089 |
Granted |  |  | - |  |  |  | - |  |  |  | - |  |  |  |  |  |  |
Exercised |  |  | - |  |  |  | - |  |  |  | - |  |  |  |  |  |  |
Expired or canceled |  |  | (157,625 | ) |  |  | 9.56 |  |  |  | (1,506,139 | ) |  |  |  |  |  |
Outstanding – April 30, 2024 |  |  | 86,000 |  |  | $ | 13.01 |  |  | $ | 1,118,640 |  |  | 0.9 years |  | $ | - |
Granted |  |  | - |  |  |  | - |  |  |  | - |  |  |  |  |  |  |
Exercised |  |  | (20,000 | ) |  |  | 12.24 |  |  |  | (244,800 | ) |  |  |  |  | (127,200) |
Expired or canceled |  |  | (66,000 | ) |  |  | 13.24 |  |  |  | (873,840 | ) |  |  |  |  |  |
Outstanding – April 30, 2025 |  |  | - |  |  | $ | - |  |  | $ | - |  |  | 0 years |  | $ | - |
Available for future grants |  |  | 1,347,114 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] | The following table summarizes activity for the RSUs and PSUs awards that reduce available capacity under the 2005 Stock Award Plan for the fiscal years ended April 30, 2025 and 2024:
|  |  |  |  | Weighted- Average |
|  | Shares |  |  | Grant Date Fair Value |
Balance – April 30, 2023 |  |  | 293,396 |  |  | $ | 6.64 |
Granted |  |  | 309,232 |  |  |  | 7.18 |
Vested |  |  | (75,497 | ) |  |  | 6.90 |
Forfeited |  |  | (52,562 | ) |  |  | 6.58 |
Balance – April 30, 2024 |  |  | 474,569 |  |  | $ | 6.94 |
Granted |  |  | 187,250 |  |  |  | 13.13 |
Vested |  |  | (131,970 | ) |  |  | 6.95 |
Forfeited |  |  | - |  |  |  | - |
Balance – April 30, 2025 |  |  | 529,849 |  |  | $ | 9.12 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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