Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2020 customer	Mar. 31, 2019 customer	Feb. 28, 2019 USD ($)
Andexxa Specialty Distributor | Customer Concentration Risk | Sales Revenue, Net
Summary Of Significant Accounting Policies [Line Items]
Number of customers representing more than ten percent of revenue	4	4
Andexxa Specialty Distributor | Customer Concentration Risk | Sales Revenue, Net | Minimum
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	10.00%	10.00%
Collaboration Revenue Customers | Customer Concentration Risk | Sales Revenue, Net
Summary Of Significant Accounting Policies [Line Items]
Number of customers representing more than ten percent of revenue	0	0
Collaboration Revenue Customers | Customer Concentration Risk | Sales Revenue, Net | Minimum
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage	10.00%	10.00%
Secured Term Loan | HealthCare Royalty Partners and its Affiliates (“HCR”) | Ondexxya
Summary Of Significant Accounting Policies [Line Items]
Maintain cash amount | $			$ 50.0