Other Financial Information (Tables)

12 Months Ended

Dec. 31, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following at December 31 (in thousands):

	2020		2019
Prepaid expenses	$	171,602	$	3,601
Other current assets	9,662		4,376
Prepaid expenses and other current assets	$	181,264	$	7,977

Schedule of Property and Equipment, Net

Property and equipment is comprised of the following at December 31 (in thousands):

	2020		2019
Land and buildings	$	79,096	$	—
Machinery and equipment	31,609		9,946
Leasehold improvements	9,684		9,088
Computer hardware	6,126		4,987
Construction in progress	71,232		448
	197,747		24,469
Less ― accumulated depreciation	(17,793)		(13,024)
Property and equipment, net	$	179,954	$	11,445

Schedule of Accrued Expenses

Accrued expenses consist of the following at December 31 (in thousands):

	2020		2019
Employee benefits and compensation	$	20,752	$	7,504
Research and development accruals	99,994		6,175
Other accrued expenses	16,644		1,188
Accrued expenses	$	137,390	$	14,867