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Industry Segment Information (Tables)
6 Months Ended
Jun. 30, 2019
Segment Reporting [Abstract]  
Industry segment information
The following tables provide certain information about the operations of each of our segments:

Three Months Ended June 30, 2019
 Oil and Natural GasContract DrillingMid-streamCorporate and OtherEliminationsTotal Consolidated
 (In thousands)
Revenues: (1)
Oil and natural gas$77,815 $— $— $— $— $77,815 
Contract drilling— 50,773 — — (7,736)43,037 
Gas gathering and processing— — 54,630 — (10,336)44,294 
Total revenues77,815 50,773 54,630 — (18,072)165,146 
Expenses:
Operating costs:
Oil and natural gas37,519 — — — (1,277)36,242 
Contract drilling— 36,390 — — (7,082)29,308 
Gas gathering and processing— — 41,550 — (9,059)32,491 
Total operating costs
37,519 36,390 41,550 — (17,418)98,041 
Depreciation, depletion, and amortization
38,751 13,504 12,102 1,935 — 66,292 
Total expenses76,270 49,894 53,652 1,935 (17,418)164,333 
General and administrative
— — — 10,064 — 10,064 
Gain on disposition of assets(60)(296)(66)— — (422)
Income (loss) from operations1,605 1,175 1,044 (11,999)(654)(8,829)
Gain on derivatives— — — 7,927 — 7,927 
Interest, net— — (345)(8,650)— (8,995)
Other— — — — 
Income (loss) before income taxes
$1,605 $1,175 $699 $(12,716)$(654)$(9,891)
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1.The revenues for oil and natural gas occur at a point in time. The revenues for contract drilling and gas gathering and processing occur over time.
Three Months Ended June 30, 2018
 Oil and Natural GasContract DrillingMid-streamCorporate and OtherEliminationsTotal Consolidated
 (In thousands)
Revenues: (1)
Oil and natural gas$102,318 $— $— $— $— $102,318 
Contract drilling— 52,767 — — (5,841)46,926 
Gas gathering and processing— — 75,406 — (21,347)54,059 
Total revenues102,318 52,767 75,406 — (27,188)203,303 
Expenses:
Operating costs:
Oil and natural gas33,682 — — — (1,264)32,418 
Contract drilling— 36,921 — — (5,027)31,894 
Gas gathering and processing— — 59,786 — (20,083)39,703 
Total operating costs
33,682 36,921 59,786 — (26,374)104,015 
Depreciation, depletion, and amortization
31,554 13,726 11,175 1,918 — 58,373 
Total expenses65,236 50,647 70,961 1,918 (26,374)162,388 
General and administrative expense— — — 8,712 — 8,712 
Gain on disposition of assets(59)(57)(45)— — (161)
Income (loss) from operations37,141 2,177 4,490 (10,630)(814)32,364 
Loss on derivatives— — — (14,461)— (14,461)
Interest, net— — (304)(7,425)— (7,729)
Other— — — — 
Income (loss) before income taxes
$37,141 $2,177 $4,186 $(32,511)$(814)$10,179 
_______________________
1.The revenues for oil and natural gas occur at a point in time. The revenues for contract drilling and gas gathering and processing occur over time.
Six Months Ended June 30, 2019
Oil and Natural GasContract DrillingMid-streamCorporate and OtherEliminationsTotal Consolidated
(In thousands)
Revenues: (1)
Oil and natural gas$163,910 $— $— $— $— $163,910 
Contract drilling— 108,972 — — (14,780)94,192 
Gas gathering and processing— — 125,139 — (28,404)96,735 
Total revenues163,910 108,972 125,139 — (43,184)354,837 
Expenses:
Operating costs:
Oil and natural gas71,527 — — — (2,571)68,956 
Contract drilling— 73,775 — — (13,066)60,709 
Gas gathering and processing— — 97,679 — (25,833)71,846 
Total operating costs71,527 73,775 97,679 — (41,470)201,511 
Depreciation, depletion, and amortization74,518 26,203 23,828 3,869 — 128,418 
Total expenses146,045 99,978 121,507 3,869 (41,470)329,929 
General and administrative expense— — — 19,805 — 19,805 
(Gain) loss on disposition of assets(138)1,449 (108)(10)— 1,193 
Income (loss) from operations18,003 7,545 3,740 (23,664)(1,714)3,910 
Gain on derivatives— — — 995 — 995 
Interest, net— — (681)(16,852)— (17,533)
Other— — — 11 — 11 
Income (loss) before income taxes$18,003 $7,545 $3,059 $(39,510)$(1,714)$(12,617)
_______________________ ____________________ 
1.The revenues for oil and natural gas occur at a point in time. The revenues for contract drilling and gas gathering and processing occur over time.
Six Months Ended June 30, 2018
 Oil and Natural GasContract DrillingMid-streamCorporate and OtherEliminationsTotal Consolidated
 (In thousands)
Revenues: (1)
Oil and natural gas$205,417 $— $— $— $— $205,417 
Contract drilling— 103,477 — — (10,562)92,915 
Gas gathering and processing— — 150,056 — (39,953)110,103 
Total revenues205,417 103,477 150,056 — (50,515)408,435 
Expenses:
Operating costs:
Oil and natural gas70,834 — — — (2,454)68,380 
Contract drilling— 72,875 — — (9,314)63,561 
Gas gathering and processing— — 118,806 — (37,499)81,307 
Total operating costs
70,834 72,875 118,806 — (49,267)213,248 
Depreciation, depletion, and amortization
62,337 27,038 22,228 3,836 — 115,439 
Total expenses133,171 99,913 141,034 3,836 (49,267)328,687 
General and administrative expense— — — 19,474 — 19,474 
Gain on disposition of assets
(129)(84)(79)(30)— (322)
Income (loss) from operations72,375 3,648 9,101 (23,280)(1,248)60,596 
Loss on derivatives— — — (21,223)— (21,223)
Interest, net— — (453)(17,280)— (17,733)
Other— — — 11 — 11 
Income (loss) before income taxes
$72,375 $3,648 $8,648 $(61,772)$(1,248)$21,651 
_______________________ 
1.The revenues for oil and natural gas occur at a point in time. The revenues for contract drilling and gas gathering and processing occur over time.