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Business Segment Information (Tables)
 6 Months Ended
Jun. 30, 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)
Three months ended June 30, 2017:
 
Revenues from non-affiliates
$
226,724

 
$
15,566

 
$
11,801

 
$
—

 
$
254,091

Inter-segment revenues
—

 
24,746

 
21,650

 
(46,396
)
 
—

Total revenues
226,724

 
40,312

 
33,451

 
(46,396
)
 
254,091

Operating income (loss)
(17,425
)
 
23,103

 
1,950

 
(2,249
)
 
5,379

Other income
13,525

 
3

 
—

 
—

 
13,528

Income (loss) before income taxes
$
(3,900
)
 
$
23,106

 
$
1,950

 
$
(2,249
)
 
$
18,907

 
 
Three months ended June 30, 2016:
 
Revenues from non-affiliates
$
159,337

 
$
6,910

 
$
12,833

 
$
—

 
$
179,080

Inter-segment revenues
—

 
22,025

 
8,302

 
(30,327
)
 
—

Total revenues
159,337

 
28,935

 
21,135

 
(30,327
)
 
179,080

Operating income (loss)
(44,748
)
 
18,056

 
(2,173
)
 
651

 
(28,214
)
Other income (expense)
(114,230
)
 
(16
)
 
31

 
—

 
(114,215
)
Income (loss) before income taxes
$
(158,978
)
 
$
18,040

 
$
(2,142
)
 
$
651

 
$
(142,429
)
 
 
Six months ended June 30, 2017:
 
Revenues from non-affiliates
$
491,607

 
$
30,172

 
$
17,428

 
$
—

 
$
539,207

Inter-segment revenues
—

 
47,781

 
37,003

 
(84,784
)
 
—

Total revenues
491,607

 
77,953

 
54,431

 
(84,784
)
 
539,207

Operating income (loss)
(16,456
)
 
43,865

 
(1,641
)
 
(297
)
 
25,471

Other income
33,292

 
2

 
4

 
—

 
33,298

Income (loss) before income taxes
$
16,836

 
$
43,867

 
$
(1,637
)
 
$
(297
)
 
$
58,769

 
 
Six months ended June 30, 2016:
 
Revenues from non-affiliates
$
276,652

 
$
13,893

 
$
18,818

 
$
—

 
$
309,363

Inter-segment revenues
—

 
44,860

 
33,205

 
(78,065
)
 
—

Total revenues
276,652

 
58,753

 
52,023

 
(78,065
)
 
309,363

Operating income (loss)
(133,625
)
 
33,200

 
1,848

 
(4,852
)
 
(103,429
)
Other income (expense)
(131,119
)
 
(2
)
 
37

 
—

 
(131,084
)
Income (loss) before income taxes
$
(264,744
)
 
$
33,198

 
$
1,885

 
$
(4,852
)
 
$
(234,513
)
 
 
At June 30, 2017:
 
Property, plant and equipment, net
$
5,567,347

 
$
495,112

 
$
41,228

 
$
(172,673
)
 
$
5,931,014

Total assets(1)
5,881,351

 
504,119

 
48,924

 
(172,673
)
 
6,261,721

At December 31, 2016:
 
 
 
 
 
 
 
 
 
Property, plant and equipment, net
$
5,620,558

 
$
424,197

 
$
47,189

 
$
(172,377
)
 
$
5,919,567

Total assets(1)
5,868,747

 
431,095

 
51,167

 
(172,377
)
 
6,178,632

___________________
(1)
Intercompany receivables (payables) for all segments were reclassified to capital contributions from (distributions to) parent and not included in total assets.