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Note 6 - Disclosures to the interim condensed consolidated statements of income or loss - Expected Status Of ESOP (Details) - Employee Stock Option Program or ESOP | 6 Months Ended
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Jun. 30, 2022 item
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Number of entitlements | 459
Employee Stock Option Program, Tranche in 2021 [Member] |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Number of entitlements | 158
Employee Stock Option Program, Tranche in 2022 [Member] |
Disclosure of terms and conditions of share-based payment arrangement [line items] |
Number of entitlements | 301

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Number of entitlements under the share-based payment plan. + References No definition available. + Details
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Namespace Prefix: | sev_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |