Note 10 - Leases (Details Textual)		3 Months Ended	6 Months Ended
Jun. 30, 2026 EUR (€)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2026 EUR (€)	Jun. 30, 2026 EUR (€)	Apr. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)
Lessee, Operating Lease, Term of Contract		122 months	122 months		122 months
Operating Lease, Payments			$ 16,377	€ 13,954
Operating Lease, Right-of-Use Asset		$ 631,000	631,000		€ 549,522	$ 645,000	$ 0
Operating Lease, Liability		$ 631,000	$ 631,000		€ 549,522	$ 645,000	$ 0
Operating Lease, Spot Rate		1.1736	1.1736		1.1736
Operating Lease, Remaining Lease Term (Month)			60 months	60 months
Operating Lease, Weighted Average Discount Rate, Percent		18.00%	18.00%		18.00%
Operating Lease, Cost	€ 16	$ 16,000	$ 16,000
Operating Lease, Remaining Undiscounted Monthly Payments		58	58		58
Operating Lease, Remaining Undiscounted Payment		$ 16,377	$ 16,377

Remaining lease term of operating lease.

No definition available.

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Period Type:	duration

- Definition

The remaining number of undiscounted monthly payments for operating leases.

+ References

No definition available.

+ Details

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Data Type:	xbrli:pureItemType
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Period Type:	instant

- Definition

The remaining undiscounted payment for operating leases.

+ References

No definition available.

+ Details

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

- Definition

The spot rate for an operating lease.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Term of lessee's 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/2009/role/commonPracticeRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-3

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ 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

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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

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Balance Type:	credit
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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

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Balance Type:	credit
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- Definition

Amount of lessee's right to use underlying asset under operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
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-URI https://asc.fasb.org/1943274/2147479041/842-20-45-1

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- 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
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-URI https://asc.fasb.org/1943274/2147478964/842-20-50-4

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