Accrued Expenses (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Payables And Accruals [Abstract]
Accrued legal verdict expense	$ 31,536	$ 31,350
Accrued royalties	8,091	8,866
Accrued CRO services	4,273	8,502
Accrued variable consideration	11,096	7,978
Accrued bonus	4,053	1,618
Accrued compensation	5,342	4,138
Accrued other clinical development	1,225	2,546
Accrued professional fees	1,343	1,775
Accrued legal fees	652	266
Accrued manufacturing costs	675	869
Other	354	1,122
Totals	$ 68,640	$ 69,030