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Convertible Senior Notes - Convertible Notes Equity Component (Detail) $ in Thousands | Sep. 30, 2019 USD ($)
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Proceeds allocated to the conversion feature | $ 52,062
Less: transaction costs allocated to the conversion feature | (1,621)
Less: deferred taxes | 12,353
Net carrying value | $ 38,088

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- Definition Convertible notes deferred taxes of equity component. + References No definition available. + Details
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Namespace Prefix: | rgen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Convertible notes transaction costs of equity component. + References No definition available. + Details
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Namespace Prefix: | rgen_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Debt Instrument Equity Component Conversion Feature. + References No definition available. + Details
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Namespace Prefix: | rgen_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | credit
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