Revenue from Contracts with Customers - Disaggregation of Revenue by Geographic Market (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]
Total Revenue	$ 364,455	$ 340,340	$ 1,084,350	$ 968,869
Domestic
Disaggregation of Revenue [Line Items]
Total Revenue	295,422	282,777	884,569	801,060
Foreign
Disaggregation of Revenue [Line Items]
Total Revenue	$ 69,033	$ 57,563	$ 199,781	$ 167,809