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Revenues from Contracts with Customers (Tables)
 12 Months Ended
Dec. 31, 2020
Revenue From Contract With Customer [Abstract]  
Disaggregation of Revenue by Identified Revenue Stream Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands):

 

 

Year Ended December 31,

 

 

 

 

2020

 

 

2019

 

 

 

2018

 

Natural gas sales

 

$

943,740

 

$

1,388,838

 

 

$

1,663,832

 

NGLs sales

 

 

578,454

 

 

681,134

 

 

 

931,360

 

Oil sales

 

 

85,519

 

 

185,453

 

 

 

255,885

 

Total natural gas, NGLs and oil sales

 

 

1,607,713

 

 

2,255,425

 

 

 

2,851,077

 

Sales of purchased natural gas

 

 

160,122

 

 

332,006

 

 

 

459,634

 

Sales of purchased NGLs

 

 

3,776

 

 

1,661

 

 

 

9,017

 

Other marketing revenue

 

 

9,375

 

 

11,842

 

 

 

14,109

 

Total

 

$

1,780,986

 

$

2,600,934

 

 

$

3,333,837