v3.25.3

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%

Percentage for Valuation Reserve Against Deferred Tax Assets.

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Eton Pharmaceuticals, Inc. 10-Q