Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Employee Service Share-based Compensation Allocation

Total share-based compensation expense by statement of operations and comprehensive loss classification is presented below (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Research and development expense	$	12,556	$	8,648	$	35,861	$	20,416
General and administrative expense	9,195		6,458		28,243		18,410
	$	21,751	$	15,106	$	64,104	$	38,826