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v3.21.1

Restatement of Previously Issued Audited and Unaudited Financial Statements - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2020
Public And Private Placement Warrants [Member] |
Change in Accounting Estimate [Line Items] |
Percentage of number of warrant holders approval require for provision made in event of tender or exchange offer | 50.00%

X
- Definition Percentage of number of warrant holders approval require for provision made in the event of tender or exchange offer. + References No definition available. + Details
Name: | swea_PercentageOfNumberOfWarrantHoldersApprovalRequireForProvisionMadeInTheEventOfTenderOrExchangeOffer
Namespace Prefix: | swea_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ChangeInAccountingEstimateLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=swea_PublicAndPrivatePlacementWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |