Note 10 - Leases - Schedule of Disposal of Lease (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Weighted-average lease term used in measurement (months) (Month)	122 months	122 months
Weighted-average discount rate	18.00%	18.00%
Subsidiary [Member]
Disposal Group, Including Discontinued Operation, Right-of-Use Assets	$ 924	$ 673
Lease and other disposal-group liabilities	$ 652	$ 673

Amount classified as lease and other liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of.

No definition available.

+ Details

Name:	sev_DisposalGroupIncludingDiscontinuedOperationLeaseAndOtherLiabilities
Namespace Prefix:	sev_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount classified as right-of-use assets attributable to disposal group held for sale or disposed of.

+ References

No definition available.

+ Details

Name:	sev_DisposalGroupIncludingDiscontinuedOperationRightofUseAssets
Namespace Prefix:	sev_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 53
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (g)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 53
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479589/842-20-55-53

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (g)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

+ Details

Name:	us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=sev_SubsidiaryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: