Commitments and Contingencies (Details) $ in Thousands	1 Months Ended				12 Months Ended
	Sep. 30, 2018 USD ($)	Jul. 31, 2017 USD ($)	Apr. 30, 2017 USD ($)	Mar. 31, 2017 CAD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2017 USD ($)	Aug. 31, 2015 USD ($)
Asset Purchase Agreement [Member] | 1st Order Pharmaceuticals, Inc. [Member]
Commitments and Contingencies [Line Items]
Upfront fee paid			$ 350,000
Milestone payments paid						$ 700,000
Royalty obligations					$ 0
Amount accrued to date based on progress against milestones					0
Asset Purchase Agreement [Member] | 1st Order Pharmaceuticals, Inc. [Member] | Clinical Development Milestones [Member]
Commitments and Contingencies [Line Items]
Future potential payments					500,000
Asset Purchase Agreement [Member] | 1st Order Pharmaceuticals, Inc. [Member] | Regulatory Milestone [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Future potential payments					6,000,000
Asset Purchase Agreement [Member] | 1st Order Pharmaceuticals, Inc. [Member] | Other Milestones [Member]
Commitments and Contingencies [Line Items]
Future potential payments					1,500,000
Asset Purchase Agreement [Member] | 1st Order Pharmaceuticals, Inc. and Bausch Health Companies Inc. [Member]
Commitments and Contingencies [Line Items]
Agreement terminated in exchange for a one-time payment	$ 6,000,000
License Agreement [Member]
Commitments and Contingencies [Line Items]
Upfront fee paid		$ 1,000,000
Amount accrued to date based on progress against milestones					$ 0
License Agreement [Member] | Clinical Development Milestones [Member]
Commitments and Contingencies [Line Items]
Future potential payments		2,000,000
License Agreement [Member] | Regulatory Milestone [Member] | Maximum [Member]
Commitments and Contingencies [Line Items]
Future potential payments		$ 7,000,000
Medpace Clinical Development Service Agreement [Member]
Commitments and Contingencies [Line Items]
Service agreement, term					5 years
Committed service obligation					$ 3,976,000		$ 7,000,000
Contractual obligation paid					$ 3,024,000
License, Manufacture and Supply Agreement [Member]
Commitments and Contingencies [Line Items]
Upfront fee paid				$ 500