Income Taxes - Reconciliation of Change in Federal and State Gross Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of year	$ 1,277	$ 1,051	$ 768
Prior period tax positions	0
Prior period tax positions		(18)	(10)
Current period tax positions	54	244	293
Balance at End of Year	1,331	1,277	1,051
Amount That Would Impact the Effective Tax Rate if Recognized	$ 1,069	$ 1,027	$ 848