XML 158 R133.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Supplemental Gas Data (unaudited) Results of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Jun. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Extractive Industries [Abstract]          
Natural Gas, NGLs and Oil Revenue     $ 1,364,325 $ 1,577,937 $ 1,125,224
Gain (Loss) on Commodity Derivative Instruments     376,105 (30,212) 206,930
Gas Royalty Interests and Purchased Gas Sales     94,027 65,986 53,795
Total Revenue     1,834,457 1,613,711 1,385,949
Lease Operating Expense     65,443 95,139 88,932
Production, Ad Valorem, and Other Fees     27,461 32,750 29,267
Transportation, Gathering and Compression     516,879 424,206 382,865
Purchased Gas Costs     90,553 64,817 52,597
Impairment of Exploration and Production Properties $ 327,400 $ 18,650 327,400 0 137,865
Impairment of Unproved Properties and Expirations     119,429 0 0
Exploration Costs     44,380 12,033 48,074
DD&A     474,352 461,149 412,036
Total Costs     1,665,897 1,090,094 1,151,636
Pre-tax Operating Income / (Loss)     168,560 523,617 234,313
Income Tax Benefit     78,398 102,629 (348,676)
Results of Operations for Producing Activities excluding Corporate and Interest Costs     $ 90,162 $ 420,988 $ 582,989