Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Mar. 31, 2018
Operating Loss Carryforwards [Line Items]
Effective tax rate	0.00%	0.00%
Operating loss unavailable for carryforward				$ 1,538
Federal Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			$ 227,751
Operating loss carryforwards, not subject to expiration			142,420
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			12,576
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			$ 2,050