Note 2 - Significant Accounting Policies (Details Textual) shares in Thousands	9 Months Ended	12 Months Ended
Apr. 30, 2026 USD ($) shares	Apr. 30, 2025 shares	Jul. 31, 2025 USD ($)
Cash Equivalents, at Carrying Value	$ 0		$ 0
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) \| shares	0	0
Accounts Receivable, after Allowance for Credit Loss	$ 27,076		$ 6,750
Number of Operating Segments	1		1

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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