Collaboration and Licensing Agreements - Deferred Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Deferred revenue - current
Beginning balance	$ 0
Ending balance	4,211	$ 0
Deferred revenue - non-current
Beginning balance	4,727
Ending balance	9,025	4,727
2019 KKC Agreement
Deferred revenue - current
Beginning balance	0	4,177
Increases due to cash received, excluding amounts recognized as revenue during the period		0
Increases due to amounts reclassified from non-current, to be recognized in the next twelve months		0
Increases to amounts invoiced, for which cash has not yet been received		0
Decreases due to revenue recognized in the period for which cash has been received		(4,177)
Ending balance	0	0
Deferred revenue - non-current
Beginning balance	4,727
Increases due to cash received during the period	7,794
Increases to amounts invoiced, for which cash has not yet been received	465
Increase due to unbilled prepayments recorded during the period	0
Decreases due to amounts reclassified as current, to be recognized in the next twelve months	(3,961)
Ending balance	9,025	4,727
2017 KKC Agreement
Deferred revenue - current
Beginning balance	0
Increases due to cash received, excluding amounts recognized as revenue during the period	42
Increases due to amounts reclassified from non-current, to be recognized in the next twelve months	3,961
Increases to amounts invoiced, for which cash has not yet been received	208
Decreases due to revenue recognized in the period for which cash has been received	0
Ending balance	4,211	0
Deferred revenue - non-current
Beginning balance	$ 4,727	0
Increases due to cash received during the period		3,242
Increases to amounts invoiced, for which cash has not yet been received		0
Increase due to unbilled prepayments recorded during the period		1,485
Decreases due to amounts reclassified as current, to be recognized in the next twelve months		0
Ending balance		$ 4,727