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Business Segment Information | 3 Months Ended
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Mar. 31, 2016
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 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 completion services and tool rentals. The Company’s midstream services business segment (OMS) performs salt water gathering and disposal 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 and fresh water sales. The revenues and expenses related to work performed by OWS and OMS 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 current 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 business segments for the periods presented:
| Exploration and Production |  | Well Services |  | Midstream Services |  | Eliminations |  | Consolidated
| (In thousands)
Three months ended March 31, 2016: |
Revenues from non-affiliates | $ | 117,315 |  |  | $ | 5,985 |  |  | $ | 6,983 |  |  | $ | — |  |  | $ | 130,283 |
Inter-segment revenues | — |  |  | 24,903 |  |  | 22,835 |  |  | (47,738 | ) |  | — |
Total revenues | 117,315 |  |  | 30,888 |  |  | 29,818 |  |  | (47,738 | ) |  | 130,283 |
Operating income (loss) | (88,877 | ) |  | 4,006 |  |  | 15,144 |  |  | (5,488 | ) |  | (75,215 | )
Other income (expense) | (16,887 | ) |  | 5 |  |  | 13 |  |  | — |  |  | (16,869 | )
Income (loss) before income taxes | $ | (105,764 | ) |  | $ | 4,011 |  |  | $ | 15,157 |  |  | $ | (5,488 | ) |  | $ | (92,084 | )
Three months ended March 31, 2015: |  |  |  |  |  |  |  |  |
Revenues from non-affiliates | $ | 173,859 |  |  | $ | 2,708 |  |  | $ | 3,820 |  |  | $ | — |  |  | $ | 180,387 |
Inter-segment revenues | — |  |  | 48,197 |  |  | 13,822 |  |  | (62,019 | ) |  | — |
Total revenues | 173,859 |  |  | 50,905 |  |  | 17,642 |  |  | (62,019 | ) |  | 180,387 |
Operating income (loss) | (42,247 | ) |  | 9,610 |  |  | 9,308 |  |  | (10,306 | ) |  | (33,635 | )
Other income (expense) | 8,239 |  |  | (2 | ) |  | (19 | ) |  | — |  |  | 8,218 |
Income (loss) before income taxes | $ | (34,008 | ) |  | $ | 9,608 |  |  | $ | 9,289 |  |  | $ | (10,306 | ) |  | $ | (25,417 | )
As of March 31, 2016: |
Property, plant and equipment, net | $ | 4,994,366 |  |  | $ | 57,821 |  |  | $ | 295,913 |  |  | $ | (170,931 | ) |  | $ | 5,177,169 |
Total assets(1) | 5,367,881 |  |  | 62,076 |  |  | 301,242 |  |  | (170,931 | ) |  | 5,560,268 |
As of December 31, 2015: |  |  |  |  |  |  |  |  |
Property, plant and equipment, net | $ | 5,057,311 |  |  | $ | 61,402 |  |  | $ | 264,956 |  |  | $ | (165,427 | ) |  | $ | 5,218,242 |
Total assets(1) | 5,478,439 |  |  | 66,952 |  |  | 269,411 |  |  | (165,427 | ) |  | 5,649,375 |
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(1) | As of March 31, 2016, total assets included assets held for sale of $25.8 million in the exploration and production segment and $34,000 in the midstream services segment. As of December 31, 2015, total assets included assets held for sale of $26.7 million in the exploration and production segment (see Note 7 – Assets Held for Sale). For the periods presented, the intercompany receivables (payables) for all segments were reclassified to capital contributions from (distributions to) parent and not included in total assets.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8981-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8971-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8595-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8933-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8844-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8984-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9031-108599 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9054-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8538-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8864-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8924-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 + Details
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