Commitments and Contingencies (Details) $ in Thousands	3 Months Ended	5 Months Ended
	Mar. 31, 2017 USD ($)	Dec. 31, 2015 USD ($)	Mar. 31, 2017 CAD	Dec. 31, 2016 USD ($)	Aug. 31, 2015 USD ($)
Commitments and Contingencies [Line Items]
Prepaid expenses, long term	$ 269			$ 408
Medpace Clinical Development Service Agreement [Member]
Commitments and Contingencies [Line Items]
Service agreement, term	5 years
Committed service obligation					$ 7,000
Contractual obligation paid		$ 3,000
Expenses for services rendered	$ 2,608
Current prepaid expenses	123			392
Prepaid expenses, long term	$ 269			$ 408
License, Manufacture and Supply Agreement [Member]
Commitments and Contingencies [Line Items]
Upfront payment payable | CAD			CAD 500