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Recapitalization - Additional Information (Details) - USD ($) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Nov. 02, 2020 | Dec. 31, 2020
Recapitalization [Abstract] |  |
Recapitalization transferred ownership units | 132,658,542 |
Contributions from selling unitholders |  | $ 48,998
Accrued reimbursement to unitholders |  | $ 4,900

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- Definition Accrued reimbursement to unitholders current. + References No definition available. + Details
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Namespace Prefix: | cwan_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Contributions From Selling Unitholders + References No definition available. + Details
Name: | cwan_ContributionsFromSellingUnitholders
Namespace Prefix: | cwan_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Recapitalization. + References No definition available. + Details
Name: | cwan_RecapitalizationAbstract
Namespace Prefix: | cwan_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Recapitalization Transferred Ownership Units + References No definition available. + Details
Name: | cwan_RecapitalizationTransferredOwnershipUnits
Namespace Prefix: | cwan_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration