Quarterly report pursuant to Section 13 or 15(d)

Stock Award Plans (Details)

v2.4.1.9
Stock Award Plans (Details)
3 Months Ended
Mar. 31, 2015
item
Stock Based Compensation  
Number of stock option plans 3rigl_ShareBasedCompensationNumberOfStockOptionPlans
Employee Stock  
Stock Based Compensation  
Purchase price of common shares as a percentage of the fair market value on the first day of the offering period 85.00%rigl_ShareBasedCompensationArrangementByShareBasedPaymentAwardPurchasePriceOfCommonStockPercentageOnFirstDayOfOfferingPeriod
/ us-gaap_PlanNameAxis
= us-gaap_EmployeeStockMember
Purchase price of common shares as a percentage of the fair market value on the purchase date 85.00%us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardPurchasePriceOfCommonStockPercent
/ us-gaap_PlanNameAxis
= us-gaap_EmployeeStockMember