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v3.24.3

Restatement of Previously Issued Financial Statements - Additional Information (Detail) $ in Millions | 3 Months Ended
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Mar. 31, 2023 USD ($)
Accounting Changes and Error Corrections [Abstract] |
Cancelled purchase orders in exchange for payment | $ 17.3
Payment to purchase component of product revenue | $ 17.3

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- Definition Cancelled purchase orders in exchange for payment. + References No definition available. + Details
Name: | rgen_CancelledPurchaseOrdersInExchangeForPayment
Namespace Prefix: | rgen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Payment To Purchase Component Of Product Revenue + References No definition available. + Details
Name: | rgen_PaymentToPurchaseComponentOfProductRevenue
Namespace Prefix: | rgen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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