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Condensed Consolidating Financial Information (Tables) | 3 Months Ended
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Mar. 31, 2015
Condensed Financial Information of Parent Company Only Disclosure [Abstract] |
Condensed Consolidating Balance Sheets | CONDENSED CONSOLIDATING BALANCE SHEETS (Amounts in thousands)
| March 31, 2015
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Assets |  |  |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 73,667 |  |  | $ | 1,072 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 74,740 |
Accounts receivable - oil and gas | 79,621 |  |  | 59 |  |  | — |  |  | — |  |  | 79,680 |
Accounts receivable - related parties | 33 |  |  | — |  |  | — |  |  | — |  |  | 33 |
Accounts receivable - intercompany | 48,154 |  |  | 26 |  |  | — |  |  | (48,180 | ) |  | — |
Prepaid expenses and other current assets | 15,777 |  |  | — |  |  | — |  |  | — |  |  | 15,777 |
Short-term derivative instruments | 93,030 |  |  | — |  |  | — |  |  | — |  |  | 93,030 |
Total current assets | 310,282 |  |  | 1,157 |  |  | 1 |  |  | (48,180 | ) |  | 263,260 |
Property and equipment: |  |  |  |  |  |  |  |  |
Oil and natural gas properties, full-cost accounting | 4,139,903 |  |  | 38,769 |  |  | — |  |  | (710 | ) |  | 4,177,962 |
Other property and equipment | 19,008 |  |  | 43 |  |  | — |  |  | — |  |  | 19,051 |
Accumulated depletion, depreciation, amortization and impairment | (1,140,142 | ) |  | (26 | ) |  | — |  |  | — |  |  | (1,140,168 | )
Property and equipment, net | 3,018,769 |  |  | 38,786 |  |  | — |  |  | (710 | ) |  | 3,056,845 |
Other assets: |  |  |  |  |  |  |  |  |
Equity investments and investments in subsidiaries | 365,840 |  |  | — |  |  | 167,186 |  |  | (158,055 | ) |  | 374,971 |
Derivative instruments | 41,956 |  |  | — |  |  | — |  |  | — |  |  | 41,956 |
Other assets | 18,566 |  |  | — |  |  | — |  |  | — |  |  | 18,566 |
Total other assets | 426,362 |  |  | — |  |  | 167,186 |  |  | (158,055 | ) |  | 435,493 |
Total assets | $ | 3,755,413 |  |  | $ | 39,943 |  |  | $ | 167,187 |  |  | $ | (206,945 | ) |  | $ | 3,755,598 |
Liabilities and Stockholders' Equity |  |  |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |
Accounts payable and accrued liabilities | $ | 399,912 |  |  | $ | 184 |  |  | $ | — |  |  | $ | — |  |  | $ | 400,096 |
Accounts payable - intercompany | — |  |  | 48,072 |  |  | 108 |  |  | (48,180 | ) |  | — |
Asset retirement obligation - current | 75 |  |  | — |  |  | — |  |  | — |  |  | 75 |
Short-term derivative instruments | 823 |  |  | — |  |  | — |  |  | — |  |  | 823 |
Deferred tax liability - current | 29,622 |  |  | — |  |  | — |  |  | — |  |  | 29,622 |
Current maturities of long-term debt | 1,781 |  |  | — |  |  | — |  |  | — |  |  | 1,781 |
Total current liabilities | 432,213 |  |  | 48,256 |  |  | 108 |  |  | (48,180 | ) |  | 432,397 |
Long-term derivative instrument | — |  |  | — |  |  | — |  |  | — |  |  | — |
Asset retirement obligation - long-term | 18,656 |  |  | — |  |  | — |  |  | — |  |  | 18,656 |
Deferred tax liability | 215,122 |  |  | — |  |  | — |  |  | — |  |  | 215,122 |
Long-term debt, net of current maturities | 779,130 |  |  | — |  |  | — |  |  | — |  |  | 779,130 |
Total liabilities | 1,445,121 |  |  | 48,256 |  |  | 108 |  |  | (48,180 | ) |  | 1,445,305 |
Stockholders' equity: |  |  |  |  |  |  |  |  |
Common stock | 857 |  |  | — |  |  | — |  |  | — |  |  | 857 |
Paid-in capital | 1,832,062 |  |  | 321 |  |  | 233,174 |  |  | (233,494 | ) |  | 1,832,063 |
Accumulated other comprehensive income (loss) | (41,659 | ) |  | — |  |  | (41,659 | ) |  | 41,659 |  |  | (41,659 | )
Retained earnings (accumulated deficit) | 519,032 |  |  | (8,634 | ) |  | (24,436 | ) |  | 33,070 |  |  | 519,032 |
Total stockholders' equity | 2,310,292 |  |  | (8,313 | ) |  | 167,079 |  |  | (158,765 | ) |  | 2,310,293 |
Total liabilities and stockholders' equity | $ | 3,755,413 |  |  | $ | 39,943 |  |  | $ | 167,187 |  |  | $ | (206,945 | ) |  | $ | 3,755,598 |
CONDENSED CONSOLIDATING BALANCE SHEETS (Amounts in thousands)
| December 31, 2014
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Assets |  |  |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 141,535 |  |  | $ | 804 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 142,340 |
Accounts receivable - oil and gas | 103,762 |  |  | 96 |  |  | — |  |  | — |  |  | 103,858 |
Accounts receivable - related parties | 46 |  |  | — |  |  | — |  |  | — |  |  | 46 |
Accounts receivable - intercompany | 45,222 |  |  | 27 |  |  | — |  |  | (45,249 | ) |  | — |
Prepaid expenses and other current assets | 3,714 |  |  | — |  |  | — |  |  | — |  |  | 3,714 |
Short-term derivative instruments | 78,391 |  |  | — |  |  | — |  |  | — |  |  | 78,391 |
Total current assets | 372,670 |  |  | 927 |  |  | 1 |  |  | (45,249 | ) |  | 328,349 |
Property and equipment: |  |  |  |  |  |  |  |  |
Oil and natural gas properties, full-cost accounting, | 3,887,874 |  |  | 35,990 |  |  | — |  |  | (710 | ) |  | 3,923,154 |
Other property and equipment | 18,301 |  |  | 43 |  |  | — |  |  | — |  |  | 18,344 |
Accumulated depletion, depreciation, amortization and impairment | (1,050,855 | ) |  | (24 | ) |  | — |  |  | — |  |  | (1,050,879 | )
Property and equipment, net | 2,855,320 |  |  | 36,009 |  |  | — |  |  | (710 | ) |  | 2,890,619 |
Other assets: |  |  |  |  |  |  |  |  |
Equity investments and investments in subsidiaries | 360,238 |  |  | — |  |  | 180,217 |  |  | (170,874 | ) |  | 369,581 |
Derivative instruments | 24,448 |  |  | — |  |  | — |  |  | — |  |  | 24,448 |
Other assets | 19,396 |  |  | — |  |  | — |  |  | — |  |  | 19,396 |
Total other assets | 404,082 |  |  | — |  |  | 180,217 |  |  | (170,874 | ) |  | 413,425 |
Total assets | $ | 3,632,072 |  |  | $ | 36,936 |  |  | $ | 180,218 |  |  | $ | (216,833 | ) |  | $ | 3,632,393 |
Liabilities and Stockholders' Equity |  |  |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |
Accounts payable and accrued liabilities | $ | 371,089 |  |  | $ | 321 |  |  | $ | — |  |  | $ | — |  |  | $ | 371,410 |
Accounts payable - intercompany | — |  |  | 45,143 |  |  | 106 |  |  | (45,249 | ) |  | — |
Asset retirement obligation - current | 75 |  |  | — |  |  | — |  |  | — |  |  | 75 |
Deferred tax liability | 27,070 |  |  | — |  |  | — |  |  | — |  |  | 27,070 |
Current maturities of long-term debt | 168 |  |  | — |  |  | — |  |  | — |  |  | 168 |
Total current liabilities | 398,402 |  |  | 45,464 |  |  | 106 |  |  | (45,249 | ) |  | 398,723 |
Asset retirement obligation - long-term | 17,863 |  |  | — |  |  | — |  |  | — |  |  | 17,863 |
Deferred tax liability | 203,195 |  |  | — |  |  | — |  |  | — |  |  | 203,195 |
Long-term debt, net of current maturities | 716,316 |  |  | — |  |  | — |  |  | — |  |  | 716,316 |
Total liabilities | 1,335,776 |  |  | 45,464 |  |  | 106 |  |  | (45,249 | ) |  | 1,336,097 |
Stockholders' equity: |  |  |  |  |  |  |  |  |
Common stock | 856 |  |  | — |  |  | — |  |  | — |  |  | 856 |
Paid-in capital | 1,828,602 |  |  | 322 |  |  | 227,079 |  |  | (227,401 | ) |  | 1,828,602 |
Accumulated other comprehensive income (loss) | (26,675 | ) |  | — |  |  | (26,675 | ) |  | 26,675 |  |  | (26,675 | )
Retained earnings (accumulated deficit) | 493,513 |  |  | (8,850 | ) |  | (20,292 | ) |  | 29,142 |  |  | 493,513 |
Total stockholders' equity | 2,296,296 |  |  | (8,528 | ) |  | 180,112 |  |  | (171,584 | ) |  | 2,296,296 |
Total liabilities and stockholders' equity | $ | 3,632,072 |  |  | $ | 36,936 |  |  | $ | 180,218 |  |  | $ | (216,833 | ) |  | $ | 3,632,393 |
Condensed Consolidating Statements of Operations | CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS (Amounts in thousands)
| Three months ended March 31, 2015
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Total revenues | $ | 175,832 |  |  | $ | 485 |  |  | $ | — |  |  | $ | — |  |  | $ | 176,317 |
Costs and expenses: |  |  |  |  |  |  |  |  |
Lease operating expenses | 16,787 |  |  | 193 |  |  | — |  |  | — |  |  | 16,980 |
Production taxes | 4,253 |  |  | 32 |  |  | — |  |  | — |  |  | 4,285 |
Midstream gathering and processing | 25,374 |  |  | 7 |  |  | — |  |  | — |  |  | 25,381 |
Depreciation, depletion, and amortization | 89,908 |  |  | 1 |  |  | — |  |  | — |  |  | 89,909 |
General and administrative | 10,761 |  |  | 36 |  |  | 2 |  |  | — |  |  | 10,799 |
Accretion expense | 190 |  |  | — |  |  | — |  |  | — |  |  | 190 |
| 147,273 |  |  | 269 |  |  | 2 |  |  | — |  |  | 147,544 |
INCOME FROM OPERATIONS | 28,559 |  |  | 216 |  |  | (2 | ) |  | — |  |  | 28,773 |
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |
Interest expense | 8,759 |  |  | — |  |  | — |  |  | — |  |  | 8,759 |
Interest income | (9 | ) |  | — |  |  | — |  |  | — |  |  | (9 | )
(Income) loss from equity method investments and investments in subsidiaries | (20,189 | ) |  | — |  |  | 4,142 |  |  | (3,928 | ) |  | (19,975 | )
| (11,439 | ) |  | — |  |  | 4,142 |  |  | (3,928 | ) |  | (11,225 | )
INCOME (LOSS) BEFORE INCOME TAXES | 39,998 |  |  | 216 |  |  | (4,144 | ) |  | 3,928 |  |  | 39,998 |
INCOME TAX EXPENSE | 14,479 |  |  | — |  |  | — |  |  | — |  |  | 14,479 |
NET INCOME (LOSS) | $ | 25,519 |  |  | $ | 216 |  |  | $ | (4,144 | ) |  | $ | 3,928 |  |  | $ | 25,519 |
CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS (Amounts in thousands)
| Three months ended March 31, 2014
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Total revenues | $ | 117,850 |  |  | $ | 179 |  |  | $ | — |  |  | $ | — |  |  | $ | 118,029 |
Costs and expenses: |  |  |  |  |  |  |  |  |
Lease operating expenses | 11,381 |  |  | 248 |  |  | — |  |  | — |  |  | 11,629 |
Production taxes | 6,937 |  |  | 20 |  |  | — |  |  | — |  |  | 6,957 |
Midstream gathering and processing | 7,757 |  |  | 12 |  |  | — |  |  | — |  |  | 7,769 |
Depreciation, depletion, and amortization | 56,877 |  |  | — |  |  | — |  |  | — |  |  | 56,877 |
General and administrative | 9,488 |  |  | 27 |  |  | (4 | ) |  | — |  |  | 9,511 |
Accretion expense | 188 |  |  | — |  |  | — |  |  | — |  |  | 188 |
Gain on sale of assets | (11 | ) |  | — |  |  | — |  |  | — |  |  | (11 | )
| 92,617 |  |  | 307 |  |  | (4 | ) |  | — |  |  | 92,920 |
INCOME (LOSS) FROM OPERATIONS | 25,233 |  |  | (128 | ) |  | 4 |  |  | — |  |  | 25,109 |
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |
Interest expense | 3,885 |  |  | — |  |  | — |  |  | — |  |  | 3,885 |
Interest income | (106 | ) |  | — |  |  | — |  |  | — |  |  | (106 | )
Litigation settlement | 18,000 |  |  | — |  |  | — |  |  | — |  |  | 18,000 |
(Income) loss from equity method investments and investments in subsidiaries | (128,351 | ) |  | — |  |  | 2,001 |  |  | (2,125 | ) |  | (128,475 | )
| (106,572 | ) |  | — |  |  | 2,001 |  |  | (2,125 | ) |  | (106,696 | )
INCOME (LOSS) BEFORE INCOME TAXES | 131,805 |  |  | (128 | ) |  | (1,997 | ) |  | 2,125 |  |  | 131,805 |
INCOME TAX EXPENSE | 49,247 |  |  | — |  |  | — |  |  | — |  |  | 49,247 |
NET INCOME (LOSS) | $ | 82,558 |  |  | $ | (128 | ) |  | $ | (1,997 | ) |  | $ | 2,125 |  |  | $ | 82,558 |
Condensed Consolidating Statements of Comprehensive Income (Loss) |
| Three months ended March 31, 2015
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net income (loss) | $ | 25,519 |  |  | $ | 216 |  |  | $ | (4,144 | ) |  | $ | 3,928 |  |  | $ | 25,519 |
Foreign currency translation adjustment | (14,984 | ) |  | — |  |  | (14,984 | ) |  | 14,984 |  |  | (14,984 | )
Other comprehensive income (loss) | (14,984 | ) |  | — |  |  | (14,984 | ) |  | 14,984 |  |  | (14,984 | )
Comprehensive income (loss) | $ | 10,535 |  |  | $ | 216 |  |  | $ | (19,128 | ) |  | $ | 18,912 |  |  | $ | 10,535 |
| Three months ended March 31, 2014
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net income (loss) | $ | 82,558 |  |  | $ | (128 | ) |  | $ | (1,997 | ) |  | $ | 2,125 |  |  | $ | 82,558 |
Foreign currency translation adjustment | (7,278 | ) |  | — |  |  | (7,278 | ) |  | 7,278 |  |  | (7,278 | )
Other comprehensive income (loss) | (7,278 | ) |  | — |  |  | (7,278 | ) |  | 7,278 |  |  | (7,278 | )
Comprehensive income (loss) | $ | 75,280 |  |  | $ | (128 | ) |  | $ | (9,275 | ) |  | $ | 9,403 |  |  | $ | 75,280 |
Condensed Consolidating Statements of Cash Flows |
| Three months ended March 31, 2015
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net cash provided by operating activities | $ | 95,879 |  |  | $ | 3,158 |  |  | $ | — |  |  | $ | — |  |  | $ | 99,037 |
Net cash provided by (used in) investing activities | (228,601 | ) |  | (2,890 | ) |  | (6,093 | ) |  | 6,093 |  |  | (231,491 | )
Net cash provided by (used in) financing activities | 64,854 |  |  | — |  |  | 6,093 |  |  | (6,093 | ) |  | 64,854 |
Net (decrease) increase in cash and cash equivalents | (67,868 | ) |  | 268 |  |  | — |  |  | — |  |  | (67,600 | )
Cash and cash equivalents at beginning of period | 141,535 |  |  | 804 |  |  | 1 |  |  | — |  |  | 142,340 |
Cash and cash equivalents at end of period | $ | 73,667 |  |  | $ | 1,072 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 74,740 |
| Three months ended March 31, 2014
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net cash provided by (used in) operating activities | $ | 159,736 |  |  | $ | (3,585 | ) |  | $ | (1 | ) |  | $ | — |  |  | $ | 156,150 |
Net cash provided by (used in) investing activities | (443,079 | ) |  | (2,034 | ) |  | (8,069 | ) |  | 8,070 |  |  | (445,112 | )
Net cash provided by (used in) financing activities | 388 |  |  | — |  |  | 8,070 |  |  | (8,070 | ) |  | 388 |
Net decrease in cash and cash equivalents | (282,955 | ) |  | (5,619 | ) |  | — |  |  | — |  |  | (288,574 | )
Cash and cash equivalents at beginning of period | 451,431 |  |  | 7,525 |  |  | — |  |  | — |  |  | 458,956 |
Cash and cash equivalents at end of period | $ | 168,476 |  |  | $ | 1,906 |  |  | $ | — |  |  | $ | — |  |  | $ | 170,382 |

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