Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 872,662	$ 647,899	$ 290,783
Over-time
Disaggregation of Revenue [Line Items]
Revenues	863,345	599,863
Point in time
Disaggregation of Revenue [Line Items]
Revenues	$ 9,317	$ 48,036