Subsequent Event - Additional Information (Detail) - Daré Bioscience, Inc. [Member] - Subsequent Event [Member]	Apr. 24, 2018 USD ($)
Subsequent Event [Line Items]
Licence agreement date	Apr. 24, 2018
License fee receivable	$ 250,000
License maintenance fee receivable for first two anniversaries	50,000
License maintenance fee receivable for each anniversary, thereafter year two	100,000
Milestone payment receivable	43,800,000
Development Milestones [Member]
Subsequent Event [Line Items]
Milestone payment receivable	13,500,000
Sales Milestone [Member]
Subsequent Event [Line Items]
Milestone payment receivable	$ 30,300,000