Related Party Transactions - Narrative (Details)			3 Months Ended
	Oct. 17, 2018 USD ($)	Aug. 01, 2018 USD ($)	Mar. 31, 2020 USD ($) day
Related Party Transaction [Line Items]
Monthly retainer for advisory services		$ 35,000
Epi-Cure Pharmaceuticals, Inc. | Affiliated Entity
Related Party Transaction [Line Items]
Amount paid for transaction			$ 200,000
Expenses from transactions with related party			200,000
Epi-Cure Pharmaceuticals, Inc. | Affiliated Entity | Agreement With Head of Research and Development
Related Party Transaction [Line Items]
Purchases from related party	$ 100,000
Maximum funding amount			$ 500,000
Minimum days notice to terminate prior to written notice (days) | day			60
License payment if option is exercised			$ 2,000,000
Milestone payments			$ 63,000,000
Epi-Cure Pharmaceuticals, Inc. | Affiliated Entity | Development Costs and Profits
Related Party Transaction [Line Items]
Cost and revenue split (percent)			50.00%