Revenues (Tables)
3 Months Ended
Mar. 31, 2021
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 March 31,
20212020
Operating revenues (in thousands):
Oil sales
$133,726 $170,505 
Natural gas sales
35,451 8,358 
NGL sales
23,214 13,906 
Oil and gas sales
$192,391 $192,769