Consolidated Balance Sheet (Parentheticals) - USD ($) $ in Thousands |
Apr. 30, 2026 |
Apr. 30, 2025 |
|---|---|---|
| Short-Term Investments | $ 23,733 | $ 33,615 |
| Accounts Receivable, Allowance for Credit Loss, Current | $ 12 | $ 16 |
| Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 0.1 | $ 0.1 |
| Common Stock, Shares Authorized (in shares) | 30,000,000 | 30,000,000 |
| Common Stock, Shares, Issued (in shares) | 10,000,000 | 10,000,000 |
| Treasury Stock, Common, Shares (in shares) | 613,807 | 588,997 |
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- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Face amount or stated value per share of common stock. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- 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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