Note 8 - Equity Investments - Schedule of Equity Method Investments (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jul. 31, 2026 |
Jul. 31, 2025 |
Jul. 31, 2024 |
|
| Purchase of convertible preferred stock | $ (0) | $ 926 | $ 2,017 |
| Equity in the net loss of investee | (1,553) | (2,661) | (3,463) |
| Communication Company Equity Method Investee [Member] | |||
| Balance, beginning of period | (397) | 1,338 | 2,784 |
| Purchase of convertible preferred stock | 0 | 926 | 2,017 |
| Equity in the net loss of investee | (183) | (1,291) | (2,093) |
| Amortization of equity method basis difference | (1,370) | (1,370) | (1,370) |
| BALANCE, END OF PERIOD | $ (1,950) | $ (397) | $ 1,338 |
| X | ||||||||||
- Definition Amount of amortization for the equity method investments. No definition available.
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| X | ||||||||||
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of income (loss) for proportionate share of equity method investee's income (loss). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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