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Note 18 - Commitments and Contingencies (Details Textual) - USD ($) |  | 12 Months Ended |
--- | --- | --- | ---
Jun. 05, 2025 | Jun. 30, 2025 | Jun. 30, 2024 | May 31, 2023
Payments to Acquire Intangible Assets |  | $ 3,000,000 | $ (0) |
Fixed Payment Arrangements |  | $ 3,223,000 | $ 8,337,000 |
Office Space in Berwyn, Pennsylvania [Member] |  |  |  |
Lessee, Operating Lease, Renewal Term (Year) |  |  | 5 years |
Operating Lease, Undiscounted Minimum Monthly Payment |  |  | $ 13,000 |
Principal Office Denver Colorado [Member] |  |  |  |
Lessee, Operating Lease, Renewal Term (Year) |  |  |  | 5 years
Operating Lease, Undiscounted Minimum Monthly Payment |  |  |  | $ 15,500
EXXUA Exclusive Commercialization Agreement [Member] |  |  |  |
Payments to Acquire Intangible Assets | $ 3,000,000 |  |  |
Commercialization Agreement, Period of Payment After Trigger (Day) | 45 days |  |  |
Commercialization Agreement, Payment Trigger, Period After First Product Launch (Year) | 1 year |  |  |
Commercialization Agreement, Second Payment | $ 3,000,000 |  |  |
Commercialization Agreement, Second Payment, Conditional | 5,000,000 |  |  |
Commercialization Agreement, Increase in Second Payment, Condition, Minimum Net Sales For First Year | 35,000,000 |  |  |
Commercialization Agreement, Milestone Payments, Threshold Sales | $ 100,000,000 |  |  |
Commercialization Agreement, Milestone Payments, Percentage of Sales Exceeding Second Threshold | 10.00% |  |  |
Commercialization Agreement, Milestone Payments, Second Threshold Sales | $ 1,000,000,000 |  |  |
Commercialization Agreement, Royalty Fees, Threshold One, Net Sales | 300,000,000 |  |  |
Commercialization Agreement, Royalty Fees, Threshold Two, Net Sales | 300,000,000 |  |  |
Commercialization Agreement, Supply Price, Threshold Net Sales | $ 300,000,000 |  |  |
Commercialization Agreement, Termination for Breach, Period After Written Notice (Day) | 90 days |  |  |
Commercialization Agreement, Breach, Period for Curation (Day) | 90 days |  |  |
Commercialization Agreement, Termination for Difficult Breach, Period After Written Notice (Day) | 120 days |  |  |
EXXUA Exclusive Commercialization Agreement [Member] | Minimum [Member] |  |  |  |
Commercialization Agreement, Milestone Payment Based on Sales | $ 5,000,000 |  |  |
Commercialization Agreement, Royalty Fees, Threshold One, Percentage of Net Sales | 28.00% |  |  |
Commercialization Agreement, Royalty Fees, Threshold Two, Percentage of Net Sales | 24.50% |  |  |
Commercialization Agreement, Supply Price, Percentage of Net Sales After Threshold | 3.00% |  |  |
EXXUA Exclusive Commercialization Agreement [Member] | Maximum [Member] |  |  |  |
Commercialization Agreement, Milestone Payment Based on Sales | $ 100,000,000 |  |  |
Commercialization Agreement, Royalty Fees, Threshold One, Percentage of Net Sales | 39.00% |  |  |
Commercialization Agreement, Royalty Fees, Threshold Two, Percentage of Net Sales | 35.50% |  |  |
Commercialization Agreement, Supply Price, Percentage of Net Sales After Threshold | 4.00% |  |  |
Tris Karbinal Agreement [Member] |  |  |  |
Supply and Distribution Commitment, Period (Year) |  | 20 years |  |
Supply and Distribution Commitment, Royalty, Percentage of Net Sales |  | 23.50% |  |
Tris Karbinal Agreement [Member] | Other Noncurrent Liabilities [Member] |  |  |  |
Fixed Payment Arrangements |  | $ 200,000 |  |

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