XML 41 R45.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Investments in Money Market Funds and Marketable Securities (Detail) - USD ($) | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | $ 24,376,423 | $ 26,643,408
Gross Unrealized Gain | 5,672 | 6,403
Gross Unrealized Loss | (3,807) | (9,392)
Fair Value | 24,378,288 | 26,640,419
Marketable securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 23,153,147 | 23,089,499
Gross Unrealized Gain | 5,400 | 6,403
Gross Unrealized Loss | (3,727) | (5,693)
Fair Value | 23,154,820 | 23,090,209
Marketable securities | U.S. Government and agency securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 12,092,702 | 12,716,167
Gross Unrealized Gain | 4,006 | 2,174
Gross Unrealized Loss | (349) | (2,072)
Fair Value | 12,092,359 | 12,716,269
Marketable securities | Corporate and other debt securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 11,060,445 | 10,373,332
Gross Unrealized Gain | 1,394 | 4,229
Gross Unrealized Loss | (3,378) | (3,621)
Fair Value | 11,058,461 | 10,373,940
Long-term marketable securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 1,223,276 | 3,553,909
Gross Unrealized Gain | 272 |
Gross Unrealized Loss | (80) | (3,699)
Fair Value | 1,223,468 | 3,550,210
Long-term marketable securities | U.S. Government and agency securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 1,223,276 | 1,227,843
Gross Unrealized Gain | 272 |
Gross Unrealized Loss | (80) | (207)
Fair Value | $ 1,223,468 | 1,227,636
Long-term marketable securities | Corporate and other debt securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost |  | 2,326,066
Gross Unrealized Loss |  | (3,492)
Fair Value |  | $ 2,322,574

X
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt securities classified as available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=51813488&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49167202&loc=d3e26610-111562 + Details
Name: | us-gaap_AvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=rgen_MarketableSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_USGovernmentAgenciesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=rgen_LongTermMarketableSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |