License and Patent Agreements - Additional Information (Detail)	1 Months Ended			12 Months Ended
	Nov. 30, 2016 CAD ($)	Jun. 30, 2014 shares	Aug. 31, 2009 CAD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 CAD ($)	Dec. 31, 2016 CAD ($)	Dec. 31, 2015 CAD ($)
Biolipox AB [Member]
Patent Licenses [Line Items]
License fee			$ 50,000
Value of common stock shares issued for license fee			250,000
Payment of milestone	$ 3,000,000
Amount of development milestones payment			3,000,000
Additional milestone payment payable			$ 1,500,000
Royalty payments				$ 0
Biolipox AB [Member] | Goods and Services Exchanged for Equity Instrument [Member]
Patent Licenses [Line Items]
Number of common stock issued for payment for achievement of milestone | shares		19,762
SHIP1 Product Candidates [Member]
Patent Licenses [Line Items]
License agreement, maintenance fees					$ 1,000	$ 1,000
SHIP1 Product Candidates [Member] | First Drug Product [Member]
Patent Licenses [Line Items]
Amount of development milestones payment					2,200,000
SHIP1 Product Candidates [Member] | Subsequent Drug Product [Member]
Patent Licenses [Line Items]
Amount of development milestones payment					1,500,000
SHIP1 Enzyme and Screening of Product Candidates [Member]
Patent Licenses [Line Items]
License agreement, maintenance fees					$ 5,000	$ 5,000	$ 5,000
License agreement expiration period				20 years	20 years