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Significant Accounting Policies - Summary of Sales Return Reserve (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Accounting Policies [Abstract] |  |  |  |
Beginning balance | $ 44,024 | $ 28,336 | $ 25,602 | $ 35,104
Returns | (254,974) | (124,142) | (602,232) | (383,316)
Provisions | 261,792 | 119,167 | 627,472 | 371,573
Ending balance | $ 50,842 | $ 23,361 | $ 50,842 | $ 23,361

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- Definition Contract with customer liability sales return reserves provision. + References No definition available. + Details
Name: | rvlv_ContractWithCustomerLiabilitySalesReturnReservesProvision
Namespace Prefix: | rvlv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Contract with customer liability sales return reserves sales return. + References No definition available. + Details
Name: | rvlv_ContractWithCustomerLiabilitySalesReturnReservesSalesReturn
Namespace Prefix: | rvlv_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_AccountingPoliciesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Current regulatory liabilities generally represent obligations to make refunds to customers for various reasons including overpayment. + References No definition available. + Details
Name: | us-gaap_CustomerRefundLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant