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Business Segment Information
 3 Months Ended
Mar. 31, 2017
Segment Reporting [Abstract]  
Business Segment Information
Business Segment Information
The Company’s exploration and production segment is engaged in the acquisition and development of oil and natural gas properties. Revenues for the exploration and production segment are derived from the sale of oil and natural gas production. The Company’s midstream services business segment (OMS) performs salt water gathering and disposal services, fresh water services, natural gas gathering and processing and crude oil gathering and transportation and other midstream services for the Company’s oil and natural gas wells operated by OPNA. Revenues for the midstream segment are primarily derived from salt water pipeline transport, salt water disposal, fresh water sales, natural gas gathering and processing and crude oil gathering, blending, stabilization and transportation. The Company’s well services business segment (OWS) performs completion services for the Company’s oil and natural gas wells operated by OPNA. Revenues for the well services segment are derived from providing well services, product sales and equipment rentals. The revenues and expenses related to work performed by OMS and OWS for OPNA’s working interests are eliminated in consolidation, and only the revenues and expenses related to non-affiliated working interest owners are included in the Company’s Condensed Consolidated Statement of Operations. These segments represent the Company’s three operating units, each offering different products and services. The Company’s corporate activities have been allocated to the supported business segments accordingly.
Management evaluates the performance of the Company’s business segments based on operating income, which is defined as segment operating revenues less operating expenses, including depreciation, depletion and amortization. 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 March 31, 2017:
 
Revenues from non-affiliates
$
264,883

 
$
14,606

 
$
5,627

 
$
—

 
$
285,116

Inter-segment revenues
—

 
23,035

 
15,352

 
(38,387
)
 
—

Total revenues
264,883

 
37,641

 
20,979

 
(38,387
)
 
285,116

Operating income (loss)
968

 
20,763

 
(3,592
)
 
1,953

 
20,092

Other income (expense)
19,768

 
(2
)
 
4

 
—

 
19,770

Income (loss) before income taxes
$
20,736

 
$
20,761

 
$
(3,588
)
 
$
1,953

 
$
39,862

 
 
Three months ended March 31, 2016:
 
 
 
 
 
 
 
 
 
Revenues from non-affiliates
$
117,315

 
$
6,983

 
$
5,985

 
$
—

 
$
130,283

Inter-segment revenues
—

 
22,835

 
24,903

 
(47,738
)
 
—

Total revenues
117,315

 
29,818

 
30,888

 
(47,738
)
 
130,283

Operating income (loss)
(88,877
)
 
15,144

 
4,006

 
(5,488
)
 
(75,215
)
Other income (expense)
(16,887
)
 
13

 
5

 
—

 
(16,869
)
Income (loss) before income taxes
$
(105,764
)
 
$
15,157

 
$
4,011

 
$
(5,488
)
 
$
(92,084
)
 
 
At March 31, 2017:
 
Property, plant and equipment, net
$
5,589,014

 
$
433,867

 
$
44,025

 
$
(170,425
)
 
$
5,896,481

Total assets(1)
5,871,573

 
440,548

 
47,932

 
(170,425
)
 
6,189,628

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.