Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Uncertain tax positions	$ 1,059	$ 897
Reconciliation of the beginning and ending balance of unrecognized tax benefits
Balance at beginning	897	690
Additions for tax positions related to the current year	156	198
Additions for tax positions of prior years	6	9
Balance at end	$ 1,059	$ 897