Revenues - Schedule of Revenues Disaggregated by Customer Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation Of Revenue [Line Items]
Revenues	$ 19,816	$ 17,153	$ 58,472	$ 47,053
VA MVP
Disaggregation Of Revenue [Line Items]
Revenues	14,092	12,912	43,598	29,791
All Other Customers
Disaggregation Of Revenue [Line Items]
Revenues	$ 5,724	$ 4,241	$ 14,874	$ 17,262