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Note 3 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2024 | Mar. 31, 2024 | Oct. 31, 2023 | Sep. 30, 2022 | Nov. 30, 2021 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Accounts Receivable, Allowance for Credit Loss | $ 238 |  |  |  |  | $ 238 |  | $ 238
Inventory Valuation Reserves | 605 |  |  |  |  | 942 |  | 605
Depreciation |  |  |  |  |  | 24 | $ 12 |
Payments to Acquire Intangible Assets |  |  |  |  |  | (0) | 1,868 |
Finite-Lived Intangible Assets, Accumulated Amortization | 2,381 |  |  |  |  | 5,384 |  | 2,381
Amortization of Intangible Assets |  |  |  |  |  | 3,003 | 753 |
Impairment, Long-Lived Asset, Held-for-Use |  |  |  |  |  | 0 | $ 0 |
Finance Lease, Liability | $ 0 |  |  |  |  | $ 0 |  | $ 0
Percentage for Valuation Reserve Against Deferred Tax Assets |  |  |  |  |  | 100.00% |  | 100.00%
Carglumic Acid Product Rights [Member] |  |  |  |  |  |  |  |
Payments to Acquire Intangible Assets |  |  |  |  | $ 3,250 |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  |  | 10 years |  |  |
Betaine Anhydrous Product Rights [Member] |  |  |  |  |  |  |  |
Payments to Acquire Intangible Assets |  |  |  | $ 2,125 |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  | 5 years |  |  |  |
Nitisinone Product Rights [Member] |  |  |  |  |  |  |  |
Payments to Acquire Intangible Assets |  |  | $ 650 |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  | 5 years |  |  |  |  |
PKU GoLike [Member] |  |  |  |  |  |  |  |
Payments to Acquire Intangible Assets |  | $ 1,868 |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  | 10 years |  |  |  |  |  |
Increlex [Member] |  |  |  |  |  |  |  |
Payments to Acquire Intangible Assets |  |  |  |  |  |  |  | $ 21,250
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |  |  |  |  |  |  | 10 years
GALZIN [Member] |  |  |  |  |  |  |  |
Payments to Acquire Intangible Assets | $ 8,119 |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |  |  |  |  |  |  | 10 years
Furniture and Fixtures [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life (Year) |  |  |  |  |  | 5 years |  |
Increlex [Member] |  |  |  |  |  |  |  |
Inventory, Raw Materials, Gross | $ 5,000 |  |  |  |  |  |  | $ 5,000
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | AnovoRx [Member] |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  | 85.80% | 98.50% |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | AnovoRx [Member] |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  | 65.80% |  | 96.20%

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