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Business Segment Information (Tables)
 12 Months Ended
Dec. 31, 2017
Segment Reporting [Abstract]  
Summarized Financial Information of Segments
The following table summarizes financial information for the Company’s three business segments for the periods presented:
 
Exploration and
Production
 
Midstream Services
 
Well Services
 
Eliminations
 
Consolidated
 
(In thousands)
Year Ended December 31, 2017
 
Revenues from external customers
$
1,122,881

 
$
72,752

 
$
52,791

 
$
—

 
$
1,248,424

Inter-segment revenues
—

 
113,047

 
95,345

 
(208,392
)
 
—

Total revenues
1,122,881

 
185,799

 
148,136

 
(208,392
)
 
1,248,424

Operating income
40,694

 
102,377

 
15,057

 
(14,160
)
 
143,968

Other income (expense)
(219,823
)
 
(37
)
 
34

 
—

 
(219,826
)
Income (loss) before income taxes including non-controlling interests
$
(179,129
)
 
$
102,340

 
$
15,091

 
$
(14,160
)
 
$
(75,858
)
Total assets(1)
$
6,050,255

 
$
663,614

 
$
52,800

 
$
(151,539
)
 
$
6,615,130

Property, plant and equipment, net
5,663,323

 
649,923

 
46,779

 
(186,539
)
 
6,173,486

Capital expenditures(2)
602,734

 
235,090

 
12,537

 
(14,157
)
 
836,204

Depreciation, depletion and amortization
519,853

 
15,999

 
12,939

 
(17,989
)
 
530,802

Impairment
6,887

 
—

 
—

 
—

 
6,887

 
 
 
 
 
 
 
 
 
 
Year Ended December 31, 2016
 
Revenues from external customers
$
635,505

 
$
35,406

 
$
33,754

 
$
—

 
$
704,665

Inter-segment revenues
—

 
85,447

 
59,595

 
(145,042
)
 
—

Total revenues
635,505

 
120,853

 
93,349

 
(145,042
)
 
704,665

Operating income (loss)
(196,179
)
 
68,868

 
3,428

 
(6,950
)
 
(130,833
)
Other income (expense)
(240,290
)
 
(474
)
 
43

 
—

 
(240,721
)
Income (loss) before income taxes
$
(436,469
)
 
$
68,394

 
$
3,471

 
$
(6,950
)
 
$
(371,554
)
Total assets(1)
$
5,868,747

 
$
431,095

 
$
51,167

 
$
(172,377
)
 
$
6,178,632

Property, plant and equipment, net
5,620,558

 
424,197

 
47,189

 
(172,377
)
 
5,919,567

Capital expenditures(2)
1,017,411

 
170,386

 
680

 
(6,950
)
 
1,181,527

Depreciation, depletion and amortization
467,894

 
8,525

 
14,892

 
(14,980
)
 
476,331

Impairment
2,253

 
2,431

 
—

 
—

 
4,684

 
 
 
 
 
 
 
 
 
 
Year Ended December 31, 2015
 
 
 
 
 
 
 
 
 
Revenues from external customers
$
721,672

 
$
23,769

 
$
44,294

 
$
—

 
$
789,735

Inter-segment revenues
—

 
80,926

 
177,184

 
(258,110
)
 
—

Total revenues
721,672

 
104,695

 
221,478

 
(258,110
)
 
789,735

Operating income (loss)
(177,512
)
 
60,668

 
49,145

 
(46,465
)
 
(114,164
)
Other income (expense)
58,542

 
(801
)
 
52

 
—

 
57,793

Income (loss) before income taxes
$
(118,970
)
 
$
59,867

 
$
49,197

 
$
(46,465
)
 
$
(56,371
)
Total assets(1)(3)
$
5,478,439

 
$
409,635

 
$
470,614

 
$
(709,313
)
 
$
5,649,375

Property, plant and equipment, net
5,057,311

 
264,956

 
61,402

 
(165,427
)
 
5,218,242

Capital expenditures(2)
537,806

 
96,947

 
21,711

 
(46,465
)
 
609,999

Depreciation, depletion and amortization
479,693

 
5,764

 
19,073

 
(19,208
)
 
485,322

Impairment
46,109

 
—

 
—

 
—

 
46,109

__________________ 
(1)
Intercompany receivables (payables) for all segments were reclassified to capital contributions from (distributions to) parent and not included in total assets.
(2)
Capital expenditures (including acquisitions) reflected in the table above differ from the amounts for capital expenditures and acquisitions of oil and gas properties shown in the Company’s Consolidated Statements of Cash Flows because amounts reflected in the table include changes in accrued liabilities from the previous reporting period for capital expenditures, while the amounts presented in the Consolidated Statements of Cash Flows are presented on a cash basis. Acquisitions totaled $54.0 million, $781.5 million and $28.7 million for the years ended December 31, 2017, 2016 and 2015, respectively, in the exploration and production segment.
(3)
Total assets for the exploration and production segment include $26.7 million of assets held for sale as of December 31, 2015.