Sunovion License Agreement (Details) - License Agreement - Sunovion Pharmaceutics Canada, Inc.	6 Months Ended
Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)
License Agreement
Number of deliverables		2
Collaboration revenue - upfront payment
License Agreement
Revenue not accounted for under Topic 606	$ 1,000,000

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