Share Capital - Schedule of Stock Option Outstanding (Details) - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding	14,438,215	14,806,027
Options outstanding, weighted average remaining contractual term	7 years 3 months 7 days
Number of options exercisable	6,090,628
Options exercisable, weighted average remaining contractual term	5 years 7 months 9 days
Exercise price 0.23 - 1.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding	46,045
Options outstanding, weighted average remaining contractual term	1 year 3 months 10 days
Number of options exercisable	46,045
Options exercisable, weighted average remaining contractual term	1 year 3 months 10 days
Exercise price 0.23 - 1.00 | Minimum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 0.23
Exercise price 0.23 - 1.00 | Maximum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 1.00
Exercise price 1.01 - 7.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding	1,741,728
Options outstanding, weighted average remaining contractual term	3 years 5 months 4 days
Number of options exercisable	1,664,228
Options exercisable, weighted average remaining contractual term	3 years 2 months 23 days
Exercise price 1.01 - 7.00 | Minimum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 1.01
Exercise price 1.01 - 7.00 | Maximum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 7.00
Exercise price 7.01 - 11.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding	3,358,859
Options outstanding, weighted average remaining contractual term	7 years 1 month 28 days
Number of options exercisable	1,477,492
Options exercisable, weighted average remaining contractual term	5 years 10 months 28 days
Exercise price 7.01 - 11.00 | Minimum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 7.01
Exercise price 7.01 - 11.00 | Maximum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 11.00
Exercise price 11.01 - 16.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding	4,725,204
Options outstanding, weighted average remaining contractual term	7 years 5 months 4 days
Number of options exercisable	1,745,554
Options exercisable, weighted average remaining contractual term	6 years 9 months 3 days
Exercise price 11.01 - 16.00 | Minimum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 11.01
Exercise price 11.01 - 16.00 | Maximum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 16.00
Exercise price 16.01 - 20.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding	298,637
Options outstanding, weighted average remaining contractual term	8 years 6 months 25 days
Number of options exercisable	71,502
Options exercisable, weighted average remaining contractual term	8 years 6 months 25 days
Exercise price 16.01 - 20.00 | Minimum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 16.01
Exercise price 16.01 - 20.00 | Maximum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 20.00
Exercise price 20.01 - 27.50
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding	3,661,651
Options outstanding, weighted average remaining contractual term	8 years 6 months 25 days
Number of options exercisable	1,073,462
Options exercisable, weighted average remaining contractual term	6 years 11 months 23 days
Exercise price 20.01 - 27.50 | Minimum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 20.01
Exercise price 20.01 - 27.50 | Maximum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 27.50
Exercise price 27.51 - 35.00
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Number of options outstanding	606,091
Options outstanding, weighted average remaining contractual term	9 years 6 months 10 days
Number of options exercisable	12,345
Options exercisable, weighted average remaining contractual term	9 years 5 months 1 day
Exercise price 27.51 - 35.00 | Minimum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 27.51
Exercise price 27.51 - 35.00 | Maximum
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]
Exercise price	$ 35.00