Supplemental Disclosures (Tables)

12 Months Ended

Dec. 31, 2021

Payables And Accruals [Abstract]

Schedules of Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following (in thousands):

	As of December 31,
	2021		2020
Accrued sublicense fees and royalties	$	23,483	$	12,160
Accrued personnel costs		19,849		13,155
Accrued external research and development expenses		11,783		9,738
Accrued income taxes payable		11,325		3,135
Accrued purchases of property and equipment		5,285		7,853
Accrued external general and administrative expenses		3,642		2,865
Other accrued expenses and current liabilities		744		176
	$	76,111	$	49,082