XML 69 R59.htm IDEA: XBRL DOCUMENT
v3.21.2

Summary of Restricted Stock Unit Activity (Parenthetical) (Detail) - Restricted Stock Units and Performance Stock Units | Sep. 30, 2021
--- | ---
Awards Granted to Non-Executive Level Employees |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Estimated forfeiture rates | 8.00%
Awards Granted to Executive Level Employees |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Estimated forfeiture rates | 3.00%

X
- Definition Percentage of shares subject to forfeiture. + References No definition available. + Details
Name: | rgen_PercentageOfSharesSubjectToForfeiture
Namespace Prefix: | rgen_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=rgen_RestrictedStockAndPerformanceStockUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=rgen_NonExecutiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_ExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |