Quarterly report pursuant to Section 13 or 15(d)

Sublease Agreement (Details)

Sublease Agreement (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Sublease Agreement    
Expected Income From Sublease $ 7,800,000rigl_ExpectedIncomeFromSublease  
Loss on sublease   9,300,000rigl_GainLossOnSublease
Changes in liability    
Balance at the beginning 9,269,000rigl_SubleaseArrangementsLiability  
Accretion of deferred liability 158,000rigl_AccretionOfDeferredLiabilityForSubleases  
Amortization of deferred liability (841,000)rigl_AmortizationOfDeferredLiabilityForSubleases  
Balance at the ending $ 8,586,000rigl_SubleaseArrangementsLiability $ 9,269,000rigl_SubleaseArrangementsLiability