Selected Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data (Unaudited)

17. Selected Quarterly Financial Data (Unaudited)

		Three Months Ended
		March 31, 2020			June 30, 2020			September 30, 2020			December 31, 2020
	(in thousands)
Total revenue		$	5,718		$	66,988		$	1,928		$	1,734
Total operating expenses		$	(77,628	)	$	(96,039	)	$	(89,543	)	$	(110,138	)
Net loss		$	(77,240	)	$	(31,167	)	$	(84,609	)	$	(105,649	)
Net loss per share, basic		$	(0.71	)	$	(0.27	)	$	(0.67	)	$	(0.83	)
Net loss per share, diluted		$	(0.71	)	$	(0.27	)	$	(0.67	)	$	(0.83	)

		Three Months Ended
		March 31, 2019			June 30, 2019			September 30, 2019			December 31, 2019
	(in thousands)
Total revenue		$	3,661		$	2,047		$	1,403		$	980
Total operating expenses		$	(34,431	)	$	(37,817	)	$	(49,083	)	$	(64,739	)
Net loss		$	(28,670	)	$	(33,928	)	$	(48,314	)	$	(63,771	)
Net loss per share, basic		$	(3.19	)	$	(3.64	)	$	(4.60	)	$	(0.69	)
Net loss per share, diluted		$	(3.19	)	$	(3.64	)	$	(4.60	)	$	(0.71	)