XML 64 R48.htm IDEA: XBRL DOCUMENT v3.8.0.1
Liability Related to the Sale of Future Royalties - Summary of Liability Related to Potential Future Royalties (Detail) - USD ($)
$ in Thousands
 12 Months Ended 70 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2017
Other Liabilities Disclosure [Abstract]        
Liability related to the sale of future royalties—beginning balance $ 108,584     $ 0
Proceeds from sale of future royalties 0     124,000
Payments from Nektar to RPI 0     (10,000)
Non-cash CIMZIA® and MIRCERA® royalty revenue (30,531) $ (30,158) $ (22,058) (137,531)
Non-cash interest expense recognized 18,869 19,712 $ 20,619 120,453
Liability related to the sale of future royalties – ending balance 96,922 108,584   96,922
Less: unamortized transaction costs (2,267)     (2,267)
Liability related to the sale of future royalties, net $ 94,655 $ 105,950   $ 94,655