Revenues - Schedule of Revenues Disaggregated by Customer Type (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation Of Revenue [Line Items]
Revenues	$ 19,495	$ 15,825	$ 38,656	$ 29,900
VA MVP
Disaggregation Of Revenue [Line Items]
Revenues	14,750	8,536	29,506	16,879
All Other Customers
Disaggregation Of Revenue [Line Items]
Revenues	$ 4,745	$ 7,289	$ 9,150	$ 13,021