Stock-Based Compensation - Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stock-based compensation expense
Total stock-based compensation expense	$ 4,496	$ 3,029	$ 11,103	$ 5,813
Research and development
Stock-based compensation expense
Total stock-based compensation expense	2,342	1,504	5,754	2,927
General and administrative
Stock-based compensation expense
Total stock-based compensation expense	$ 2,154	$ 1,525	$ 5,349	$ 2,886