Revenue from Contracts with Customers - Revenue From Contracts With Customers Table (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from customers		$ 672,666	$ 610,188	$ 1,304,536	$ 1,324,679
Revenue from other than customers, other		87	391	329	738
Total revenues and other	[1]	719,131	671,755	1,394,105	1,446,068
Service Revenues - Fee Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		572,607	581,452	1,102,020	1,223,373
Total revenues and other		618,985	642,628	1,191,260	1,344,024
Service Revenues - Product Based [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		27,803	7,000	59,455	22,921
Total revenues and other		27,803	7,000	59,455	22,921
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Revenue from customers		72,256	21,736	143,061	78,385
Total revenues and other		72,256	21,736	143,061	78,385
Lease Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from other than customers		$ 46,378	$ 61,176	$ 89,240	$ 120,651

[1] Total revenues and other includes related-party amounts of $415.4 million and $793.7 million for the three and six months ended June 30, 2021, respectively, and $473.4 million and $955.8 million for the three and six months ended June 30, 2020, respectively. See Note 6.