Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized tax benefit, beginning of period	$ 2,681	$ 2,158
Gross increases — current year tax positions	704	548
Gross increases — prior year tax positions	0	0
Gross decreases — prior year tax positions	(28)	(25)
Unrecognized tax benefit, end of period	$ 3,357	$ 2,681