Share Capital - Schedule of Stock Option Outstanding (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	10,350,810	14,438,215
Options outstanding, weighted average remaining contractual term	7 years 3 months 10 days
Number of options exercisable (in shares)	3,217,923
Options exercisable, weighted average remaining contractual term	5 years 11 months 8 days
Exercise price 0.23 - 10.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	2,256,916
Options outstanding, weighted average remaining contractual term	6 years 1 month 24 days
Number of options exercisable (in shares)	984,380
Options exercisable, weighted average remaining contractual term	4 years 10 months 13 days
Exercise price 0.23 - 10.00 | Minimum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 0.23
Exercise price 0.23 - 10.00 | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 10.00
Exercise price 10.01 - 20.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	3,205,758
Options outstanding, weighted average remaining contractual term	6 years 9 months 29 days
Number of options exercisable (in shares)	869,058
Options exercisable, weighted average remaining contractual term	5 years 10 months 2 days
Exercise price 10.01 - 20.00 | Minimum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 10.01
Exercise price 10.01 - 20.00 | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 20.00
Exercise price 20.01 - 30.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	2,933,518
Options outstanding, weighted average remaining contractual term	7 years 4 months 24 days
Number of options exercisable (in shares)	1,225,951
Options exercisable, weighted average remaining contractual term	6 years 6 months 25 days
Exercise price 20.01 - 30.00 | Minimum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 20.01
Exercise price 20.01 - 30.00 | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 30.00
Exercise price 30.01 - 40.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	424,414
Options outstanding, weighted average remaining contractual term	8 years 6 months 21 days
Number of options exercisable (in shares)	138,534
Options exercisable, weighted average remaining contractual term	8 years 5 months 19 days
Exercise price 30.01 - 40.00 | Minimum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 30.01
Exercise price 30.01 - 40.00 | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 40.00
Exercise price 40.01 - 50.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	1,347,064
Options outstanding, weighted average remaining contractual term	9 years 3 months 14 days
Number of options exercisable (in shares)	0
Exercise price 40.01 - 50.00 | Minimum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 40.01
Exercise price 40.01 - 50.00 | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 50.00
Exercise price 50.01 - 60.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	44,380
Options outstanding, weighted average remaining contractual term	9 years 4 months 20 days
Number of options exercisable (in shares)	0
Exercise price 50.01 - 60.00 | Minimum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 50.01
Exercise price 50.01 - 60.00 | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 60.00
Exercise price 60.01 - 90.00
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Number of options outstanding (in shares)	138,760
Options outstanding, weighted average remaining contractual term	9 years 8 months 12 days
Number of options exercisable (in shares)	0
Exercise price 60.01 - 90.00 | Minimum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 60.01
Exercise price 60.01 - 90.00 | Maximum
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise price (in usd per share)	$ 90.00