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Note 12 - Leases (Tables)

3 Months Ended

Mar. 31, 2026

Notes Tables

Lessee, Operating Lease, Disclosure [Table Text Block]

			March 31,				December 31,
Assets	Classification		2026				2025
Operating lease right-of-use assets	Operating lease right-of-use assets, net		$	301			$	310
Total leased assets			$	301			$	310
Liabilities
Operating lease liabilities, current	Accrued liabilities		$	75			$	65
Operating lease liabilities, noncurrent	Operating lease liabilities, net of current portion			440				460
Total operating lease liabilities			$	515			$	525

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

		Total				2026 (Remainder)				2027				2028				2029				2030				2031 and thereafter
Undiscounted lease payments		$	684			$	98			$	134			$	138			$	142			$	146			$	25
Less: Imputed interest			(170	)
Total lease liabilities		$	515

X

- Definition

Tabular disclosure for operating lease.

+ References

No definition available.

+ Details

Name:	eton_LesseeOperatingLeaseDisclosureTableTextBlock
Namespace Prefix:	eton_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration