Description of Business (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) productCandidate	Jun. 30, 2019 USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Number of product candidates | productCandidate			2
Gain on sale of assets	$ 14,444	$ 0	$ 14,444	$ 0
Millicent Pharma Limited | Intrarosa
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Gain on sale of assets	$ 14,400		$ 14,400