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Cash, Cash Equivalents and Short-Term Investments (Details 4) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended |
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Mar. 31, 2015
item
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| Fair value and gross unrealized losses of investments in individual securities in unrealized loss position | |
| Weighted-average time to maturity of cash equivalents and available-for-sale securities | 157 days |
| Stated maturity period may be greater than this period and classified as current | 1 year |
| Number of investments in continuous unrealized loss position for more than twelve months | 0us-gaap_AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsGreaterThanOrEqualToOneYear |
| Number of individual securities in unrealized loss position for twelve months or less | 27us-gaap_AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsLessThanOneYear |
| Other-than-temporary impairments of securities | $ 0us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsAvailableforsaleSecurities |
| Fair Value | 51,223us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue |
| Unrealized Losses | (17)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses |
| U S Government Sponsored Enterprises Debt Securities | |
| Fair value and gross unrealized losses of investments in individual securities in unrealized loss position | |
| Fair Value |
22,078us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
| Unrealized Losses |
(4)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses / us-gaap_InvestmentTypeAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
| Corporate Bond Securities And Commercial Paper | |
| Fair value and gross unrealized losses of investments in individual securities in unrealized loss position | |
| Fair Value |
29,145us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_InvestmentTypeAxis = rigl_CorporateBondSecuritiesAndCommercialPaperMember |
| Unrealized Losses |
$ (13)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses / us-gaap_InvestmentTypeAxis = rigl_CorporateBondSecuritiesAndCommercialPaperMember |
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- Definition
The stated maturity period of available-for-sale debt securities may be greater than this period and classified as current. No definition available.
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- Definition
Represents the weighted-average period of maturity of cash equivalents and available-for-sale debt securities. No definition available.
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- Definition
Amount of unrealized loss on investments in available-for-sale securities that have been in a loss position for less than twelve months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Number of investment positions in available-for-sale investments that have been in a continuous unrealized loss position for greater than or equal to a year for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. No definition available.
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- Definition
Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. No definition available.
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- Definition
The amount by which the fair value of an investment in debt and equity securities categorized as Available-for-sale is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Details
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