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Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Revenue from Contract with Customer [Abstract] |  |
Customer prepayments | $ 6,253 | $ 6,258

X
- Definition The current portion of prepayments received from customers for goods and services to be provideds in the future period. + References No definition available. + Details
Name: | prpl_CustomersAdvanceCurrent
Namespace Prefix: | prpl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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