Revenues (Tables)
6 Months Ended
Jun. 30, 2020
Revenue from Contract with Customer [Abstract]  
Summary of Oil and Gas Revenues
Oil and gas revenues presented within the Consolidated Statements of Operations relate to the sale of oil, natural gas and NGLs as shown below:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2020
 
2019
 
2020

2019
Operating revenues (in thousands):
 
 
 
 
 
 
 
Oil sales
$
73,100

 
$
214,305

 
$
243,605

 
$
389,859

Natural gas sales
8,787

 
8,088

 
17,145

 
20,585

NGL sales
8,622

 
21,846

 
22,528

 
48,364

Oil and gas sales
$
90,509

 
$
244,239

 
$
283,278

 
$
458,808