Related Party Transactions (Details) - Director affiliate	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) ft² option	Jun. 30, 2018 USD ($)
Protoden Intellectual Property
Related Party Transaction [Line Items]
Operating lease costs and rent expense in related party transaction			$ 100,000	$ 100,000
Annual fee under license agreement			$ 100,000
Lease Facility In Winnipeg, Manitoba
Related Party Transaction [Line Items]
Office space, square foot | ft²			31,100
Lease term	5 years		5 years
Renewal option | option			1
Lease renewal term	5 years		5 years
Operating lease costs and rent expense in related party transaction	$ 71,000	$ 80,000	$ 146,000	$ 161,000