Note 12 - Sales and Cost of Sales - Sales Revenue and Cost of Sales Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2026	Apr. 30, 2025
Revenue	$ 0	$ 0	$ 20,200	$ 66,837
Cost of revenues	0	0	(10,172)	(42,360)
Gross profit	$ 0	$ 0	$ 10,028	$ 24,477

The aggregate cost of goods produced and sold and services rendered during the reporting period.

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

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+ Details

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details