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Business Segment Information (Tables)
 6 Months Ended
Jun. 30, 2015
Segment Reporting [Abstract]  
Summarized Financial Information of Segments
The following table summarizes financial information for the Company’s business segments for the periods presented:
 
 
Exploration and
Production
 
Well Services
 
Midstream Services
 
Eliminations
 
Consolidated
 
(In thousands)
Three months ended June 30, 2015:
 
Revenues from non-affiliates
$
214,110

 
$
9,219

 
$
6,717

 
$
—

 
$
230,046

Inter-segment revenues
—

 
49,469

 
21,944

 
(71,413
)
 
—

Total revenues
214,110

 
58,688

 
28,661

 
(71,413
)
 
230,046

Operating income (loss)
(22,529
)
 
9,008

 
15,947

 
(9,863
)
 
(7,437
)
Other income (expense)
(76,635
)
 
22

 
(25
)
 
—

 
(76,638
)
Income (loss) before income taxes
$
(99,164
)
 
$
9,030

 
$
15,922

 
$
(9,863
)
 
$
(84,075
)
 
 
Three months ended June 30, 2014:
 
 
 
 
 
 
 
 
 
Revenues from non-affiliates
$
354,183

 
$
14,877

 
$
3,318

 
$
—

 
$
372,378

Inter-segment revenues
—

 
43,570

 
10,160

 
(53,730
)
 
—

Total revenues
354,183

 
58,447

 
13,478

 
(53,730
)
 
372,378

Operating income
153,669

 
16,295

 
6,096

 
(9,515
)
 
166,545

Other income (expense)
(104,448
)
 
23

 
—

 
—

 
(104,425
)
Income before income taxes
$
49,221

 
$
16,318

 
$
6,096

 
$
(9,515
)
 
$
62,120

 
 
 
 
 
 
 
 
 
 
Six months ended June 30, 2015:
 
 
 
 
 
 
 
 
 
Revenues from non-affiliates
$
387,969

 
$
11,927

 
$
10,537

 
$
—

 
$
410,433

Inter-segment revenues
—

 
97,666

 
35,766

 
(133,432
)
 
—

Total revenues
387,969

 
109,593

 
46,303

 
(133,432
)
 
410,433

Operating income (loss)
(64,776
)
 
18,618

 
25,255

 
(20,169
)
 
(41,072
)
Other income (expense)
(68,396
)
 
20

 
(44
)
 
—

 
(68,420
)
Income (loss) before income taxes
$
(133,172
)
 
$
18,638

 
$
25,211

 
$
(20,169
)
 
$
(109,492
)
 
 
Six months ended June 30, 2014:
 
 
 
 
 
 
 
 
 
Revenues from non-affiliates
$
686,030

 
$
30,704

 
$
5,163

 
$
—

 
$
721,897

Inter-segment revenues
—

 
80,149

 
17,668

 
(97,817
)
 
—

Total revenues
686,030

 
110,853

 
22,831

 
(97,817
)
 
721,897

Operating income
476,615

 
29,747

 
10,728

 
(21,465
)
 
495,625

Other income (expense)
(162,108
)
 
75

 
—

 
—

 
(162,033
)
Income before income taxes
$
314,507

 
$
29,822

 
$
10,728

 
$
(21,465
)
 
$
333,592

 
 
As of June 30, 2015:
 
Property, plant and equipment, net
$
5,179,023

 
$
70,924

 
$
245,842

 
$
(139,132
)
 
$
5,356,657

Total assets
5,599,726

 
385,362

 
330,858

 
(532,014
)
 
5,783,932

As of December 31, 2014:
 
 
 
 
 
 
 
 
 
Property, plant and equipment, net
$
5,074,588

 
$
58,767

 
$
172,394

 
$
(118,963
)
 
$
5,186,786

Total assets
5,802,295

 
281,844

 
212,685

 
(358,412
)
 
5,938,412