Income Taxes - Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of the beginning and ending amounts of unrecognized tax benefits
Gross Unrecognized Tax Benefit - Beginning Balance	$ 77	$ 101
Increases Related to Tax Positions from Prior Years	0	(24)
Gross Unrecognized Tax Benefit - Ending Balance	$ 77	$ 77