License Revenue (Tables)

12 Months Ended

Dec. 31, 2022

License Revenue [Abstract]

Schedule of contract liability

Balance at January 1, 2021	$	4,216
Additions(1)		4,542
Deductions for performance obligations satisfied:
In current period		(1,721	)
In prior period		(1,874	)
Balance at December 31, 2021		5,163
Deductions for performance obligations satisfied:
In current period		(2,514	)
Balance at December 31, 2022	$	2,649
(1) Milestone payment of $6.0 million (or $4.5 million net of withholding taxes and other fees and royalties).