Income Taxes - Unrecognized Tax Benefis (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits, Beginning Balance	$ 2	$ 1
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	120	1
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	6	0
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	1	0
Unrecognized Tax Benefits, Ending Balance	$ 127	$ 2