Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2020

Net Loss per Share

Schedule of basic and diluted net loss per share attributable to common shareholders

	Years Ended
	December 31,
		2020	2019		2018
Numerator:
Net loss attributable to common shareholders	$	(161,381)	$	(161,867)	$	(103,227)
Denominator:
Weighted average common shares outstanding—basic and diluted		61,842,722		54,049,477		29,547,427
Net loss per share attributable to common shareholders— basic and diluted	$	(2.61)	$	(2.99)	$	(3.49)

Schedule of anti-dilutive securities excluded from the computation of diluted net loss per share attributable to common shareholders

	As of December 31,
	2020	2019	2018
Share options to purchase common shares	9,958,858	8,491,734	5,960,939
Unvested restricted common shares	—	—	877,219
Unvested RSUs	205,312	328,296	—
	10,164,170	8,820,030	6,838,158