Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Valuation Allowance					$ 165,600
Unrecognized Tax Benefits	$ 0		$ 0
Effective Income Tax Rate, Continuing Operations	(0.10%)	0.60%	(0.20%)	(0.50%)