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v3.21.1

Fair Value Measurements (Details) | 12 Months Ended
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Dec. 31, 2020
Expected life of warrants is assumed to be equivalent to a probability weighted average life of warrants | 2 years
Minimum [Member] |
Percentage of probability assigned to the consummation of a business combination | 75.00%
Maximum [Member] |
Percentage of probability assigned to the consummation of a business combination | 90.00%

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- Definition Percentage of probability assigned to the consummation of a business combination. + References No definition available. + Details
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Namespace Prefix: | swea_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, 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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_WarrantsAndRightsOutstandingTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |