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Note 11 - Shareholders' Deficit - Expected Share Issuances (Details) - shares |  |  |  |  |  | 1 Months Ended | 2 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 11, 2025 | Jul. 15, 2025 | Jul. 11, 2025 | Jun. 30, 2025 | May 14, 2025 | Aug. 14, 2025 | Aug. 11, 2025 | Jun. 30, 2025 | Jun. 30, 2025
Conversion of the 2026 Notes Into Common Stock, Final Settlement [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Number of shares (in shares) | 389,556 | 528,197 |  |  |  |  |  |  |
Conversion of the 2026 Notes Into Common Stock, Initial Settlement [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Number of shares (in shares) | 539,482 |  | 539,320 |  |  |  |  |  |
Conversion of the 2026 Notes Into Common Stock [Member] |  |  |  |  |  |  |  |  |
Number of shares (in shares) |  |  |  | 539,320 | 10,000,000 |  |  | 539,320 | 539,320
Conversion of the 2026 Notes Into Common Stock [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Number of shares (in shares) |  |  |  |  |  | 1,996,555 | 1,996,555 |  |

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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482913/230-10-50-5 + Details
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