Quarterly report pursuant to Section 13 or 15(d)

Segment Information (Details)

v3.10.0.1
Segment Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Sales and revenues:          
Sales and revenues $ 989,344 $ 790,389 $ 2,017,445 $ 1,985,968  
Operating expenses:          
Impairment of unproved properties 134,437 15,199 184,973 42,098  
Impairment of gathering systems and facilities 8,501   8,501    
Depletion, depreciation, and amortization 238,050 201,182 466,294 403,911  
General and administrative expense 61,687 64,099 121,717 128,797  
Other operating expenses 241,482 102,427 465,619 219,957  
Total operating expenses 1,022,107 666,646 1,903,714 1,360,882  
Operating income (loss) (32,763) 123,743 113,731 625,086  
Equity in earnings of unconsolidated affiliates 9,264 3,623 17,126 5,854  
Segment assets 15,690,607 15,442,221 15,690,607 15,442,221 $ 15,261,490
Capital expenditures for segment assets 563,061 679,648 1,109,024 1,195,882  
Exploration and production          
Sales and revenues:          
Sales and revenues 823,734 737,229 1,608,277 1,864,280  
Operating expenses:          
Impairment of unproved properties 134,437   184,973 42,098  
Depletion, depreciation, and amortization 201,393 170,446      
General and administrative expense 46,662 49,531      
Other operating expenses 27,023 24,052      
Total operating expenses 851,535 629,633      
Operating income (loss) (22,622) 111,507      
Segment assets 13,381,044 13,430,135 13,381,044 13,430,135  
Capital expenditures for segment assets 506,055 583,687      
Gathering and compression          
Sales and revenues:          
Sales and revenues 4,263 2,324 8,408 4,863  
Operating expenses:          
Impairment of gathering systems and facilities 8,501   8,501    
Depletion, depreciation, and amortization 24,482 22,494      
General and administrative expense 11,995 10,705      
Other operating expenses 4 12      
Total operating expenses 57,382 43,121      
Operating income (loss) 61,337 55,641      
Equity in earnings of unconsolidated affiliates 9,264 3,623      
Segment assets 2,299,863 2,065,899 2,299,863 2,065,899  
Capital expenditures for segment assets 113,083 88,806      
Water handling and treatment          
Sales and revenues:          
Sales and revenues 1,255 868 2,045 933  
Operating expenses:          
Depletion, depreciation, and amortization 12,175 8,242      
General and administrative expense 3,499 4,084      
Other operating expenses 4,982 4,532      
Total operating expenses 82,874 58,302      
Operating income (loss) 49,382 36,703      
Segment assets 993,238 711,735 993,238 711,735  
Capital expenditures for segment assets 17,842 58,497      
Marketing          
Sales and revenues:          
Sales and revenues 160,092 49,968 398,715 115,892  
Operating expenses:          
Other operating expenses 213,420 77,421      
Total operating expenses 213,420 77,421      
Operating income (loss) (53,328) (27,453)      
Segment assets 61,684 14,357 61,684 14,357  
Operating segments          
Operating expenses:          
Equity in earnings of unconsolidated affiliates     17,126 5,854  
Operating segments | Exploration and production          
Sales and revenues:          
Sales and revenues 828,913 741,140 1,619,331 1,872,631  
Operating expenses:          
Depletion, depreciation, and amortization     396,981 345,415  
General and administrative expense     93,082 100,587  
Other operating expenses     54,371 50,771  
Total operating expenses     1,587,034 1,272,786  
Operating income (loss)     32,297 599,845  
Segment assets 13,381,044 13,430,135 13,381,044 13,430,135  
Capital expenditures for segment assets     978,822 1,041,426  
Operating segments | Gathering and compression          
Sales and revenues:          
Sales and revenues 118,719 98,762 226,896 190,421  
Operating expenses:          
Depletion, depreciation, and amortization     48,120 42,418  
General and administrative expense     22,357 20,843  
Other operating expenses     18 12  
Total operating expenses     102,764 81,297  
Operating income (loss)     124,132 109,124  
Equity in earnings of unconsolidated affiliates     17,126 5,854  
Segment assets 2,299,863 2,065,899 2,299,863 2,065,899  
Capital expenditures for segment assets     206,753 155,365  
Operating segments | Water handling and treatment          
Sales and revenues:          
Sales and revenues 132,256 95,005 253,670 178,115  
Operating expenses:          
Depletion, depreciation, and amortization     21,193 16,078  
General and administrative expense     7,592 8,403  
Other operating expenses     9,892 8,876  
Total operating expenses     155,767 113,423  
Operating income (loss)     97,903 64,692  
Segment assets 993,238 711,735 993,238 711,735  
Capital expenditures for segment assets     58,127 95,451  
Operating segments | Marketing          
Sales and revenues:          
Sales and revenues 160,092 49,968   115,892  
Operating expenses:          
Other operating expenses     409,159 167,414  
Total operating expenses     409,159 167,414  
Operating income (loss)     (10,444) (51,522)  
Segment assets 61,684 14,357 61,684 14,357  
Elimination of intersegment transaction          
Sales and revenues:          
Sales and revenues (250,636) (194,486) (481,167) (371,091)  
Operating expenses:          
General and administrative expense (469) (221) (1,314) (1,036)  
Other operating expenses (3,947) (3,590) (7,821) (7,116)  
Total operating expenses (183,104) (141,831) (351,010) (274,038)  
Operating income (loss) (67,532) (52,655) (130,157) (97,053)  
Segment assets (1,045,222) (779,905) (1,045,222) (779,905)  
Capital expenditures for segment assets (73,919) (51,342) (134,678) (96,360)  
Elimination of intersegment transaction | Exploration and production          
Sales and revenues:          
Sales and revenues 5,179 3,911 11,054 8,351  
Elimination of intersegment transaction | Gathering and compression          
Sales and revenues:          
Sales and revenues 114,456 96,438 218,488 185,558  
Elimination of intersegment transaction | Water handling and treatment          
Sales and revenues:          
Sales and revenues 131,001 94,137 251,625 177,182  
Elimination of intersegment transaction | Marketing          
Sales and revenues:          
Sales and revenues     398,715    
Gathering, compression, water handling and treatment          
Operating expenses:          
Cost of goods and services sold 307,786 266,747 599,724 533,576  
Gathering, compression, water handling and treatment | Exploration and production          
Operating expenses:          
Cost of goods and services sold 409,708 353,216      
Gathering, compression, water handling and treatment | Gathering and compression          
Operating expenses:          
Cost of goods and services sold 12,400 9,910      
Gathering, compression, water handling and treatment | Operating segments | Exploration and production          
Operating expenses:          
Cost of goods and services sold     794,053 700,984  
Gathering, compression, water handling and treatment | Operating segments | Gathering and compression          
Operating expenses:          
Cost of goods and services sold     23,768 18,024  
Gathering, compression, water handling and treatment | Elimination of intersegment transaction          
Operating expenses:          
Cost of goods and services sold (114,322) (96,379) (218,097) (185,432)  
Oil and Gas, Operation and Maintenance          
Operating expenses:          
Cost of goods and services sold 30,164 16,992 56,886 32,543  
Oil and Gas, Operation and Maintenance | Exploration and production          
Operating expenses:          
Cost of goods and services sold 32,312 17,189      
Oil and Gas, Operation and Maintenance | Water handling and treatment          
Operating expenses:          
Cost of goods and services sold 62,218 41,444      
Oil and Gas, Operation and Maintenance | Operating segments | Exploration and production          
Operating expenses:          
Cost of goods and services sold     63,574 32,931  
Oil and Gas, Operation and Maintenance | Operating segments | Water handling and treatment          
Operating expenses:          
Cost of goods and services sold     117,090 80,066  
Oil and Gas, Operation and Maintenance | Elimination of intersegment transaction          
Operating expenses:          
Cost of goods and services sold $ (64,366) $ (41,641) $ (123,778) $ (80,454)