Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets:
Net operating loss carryforwards	$ 109,612	$ 81,399
Research and development credits	9,816	6,911
Stock-based compensation	1,639	849
ASC 842 - lease liability	2,599	2,517
UNICAP	1,049	481
Other	1,944	976
Total gross	126,659	93,133
Deferred tax liabilities:
Amortization	(2,202)	(7,478)
ASC 842 - ROU asset	(2,441)	(2,504)
Less: valuation allowance	(122,016)	(83,151)
Deferred tax assets, net of valuation allowance	$ 0	$ 0