XML 58 R40.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Condensed Consolidating Financial Information (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Condensed Financial Information of Parent Company Only Disclosure [Abstract] |
Condensed Consolidating Balance Sheets | CONDENSED CONSOLIDATING BALANCE SHEETS (Amounts in thousands)
| December 31, 2016
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Assets |  |  |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 1,273,882 |  |  | $ | 1,993 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,275,875 |
Restricted Cash | 185,000 |  |  | — |  |  | — |  |  | — |  |  | 185,000 |
Accounts receivable - oil and gas | 137,087 |  |  | 37,496 |  |  | — |  |  | (37,822 | ) |  | 136,761 |
Accounts receivable - related parties | 16 |  |  | — |  |  | — |  |  | — |  |  | 16 |
Accounts receivable - intercompany | 449,517 |  |  | 1,151 |  |  | — |  |  | (450,668 | ) |  | — |
Prepaid expenses and other current assets | 6,230 |  |  | 1,409 |  |  | — |  |  | — |  |  | 7,639 |
Short-term derivative instruments | 3,488 |  |  | — |  |  | — |  |  | — |  |  | 3,488 |
Total current assets | 2,055,220 |  |  | 42,049 |  |  | — |  |  | (488,490 | ) |  | 1,608,779 |
Property and equipment: |  |  |  |  |  |  |  |  |
Oil and natural gas properties, full-cost accounting | 5,655,125 |  |  | 417,524 |  |  | — |  |  | (729 | ) |  | 6,071,920 |
Other property and equipment | 68,943 |  |  | 43 |  |  | — |  |  | — |  |  | 68,986 |
Accumulated depletion, depreciation, amortization and impairment | (3,789,746 | ) |  | (34 | ) |  | — |  |  | — |  |  | (3,789,780 | )
Property and equipment, net | 1,934,322 |  |  | 417,533 |  |  | — |  |  | (729 | ) |  | 2,351,126 |
Other assets: |  |  |  |  |  |  |  |  |
Equity investments and investments in subsidiaries | 236,327 |  |  | 33,590 |  |  | 45,213 |  |  | (71,210 | ) |  | 243,920 |
Long-term derivative instruments | 5,696 |  |  | — |  |  | — |  |  | — |  |  | 5,696 |
Deferred tax asset | 4,692 |  |  | — |  |  | — |  |  | — |  |  | 4,692 |
Other assets | 8,932 |  |  | — |  |  | — |  |  | — |  |  | 8,932 |
Total other assets | 255,647 |  |  | 33,590 |  |  | 45,213 |  |  | (71,210 | ) |  | 263,240 |
Total assets | $ | 4,245,189 |  |  | $ | 493,172 |  |  | $ | 45,213 |  |  | $ | (560,429 | ) |  | $ | 4,223,145 |
Liabilities and Stockholders' Equity |  |  |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |
Accounts payable and accrued liabilities | $ | 255,966 |  |  | $ | 9,158 |  |  | $ | — |  |  | $ | — |  |  | $ | 265,124 |
Accounts payable - intercompany | 31,202 |  |  | 457,163 |  |  | 126 |  |  | (488,491 | ) |  | — |
Asset retirement obligation | 195 |  |  | — |  |  | — |  |  | — |  |  | 195 |
Derivative instruments | 119,219 |  |  | — |  |  | — |  |  | — |  |  | 119,219 |
Current maturities of long-term debt | 276 |  |  | — |  |  | — |  |  | — |  |  | 276 |
Total current liabilities | 406,858 |  |  | 466,321 |  |  | 126 |  |  | (488,491 | ) |  | 384,814 |
Long-term derivative instrument | 26,759 |  |  | — |  |  | — |  |  | — |  |  | 26,759 |
Asset retirement obligation | 34,081 |  |  | — |  |  | — |  |  | — |  |  | 34,081 |
Long-term debt, net of current maturities | 1,593,599 |  |  | — |  |  | — |  |  | — |  |  | 1,593,599 |
Total liabilities | 2,061,297 |  |  | 466,321 |  |  | 126 |  |  | (488,491 | ) |  | 2,039,253 |
Stockholders' equity: |  |  |  |  |  |  |  |  |
Common stock | 1,588 |  |  | — |  |  | — |  |  | — |  |  | 1,588 |
Paid-in capital | 3,946,442 |  |  | 33,822 |  |  | 257,026 |  |  | (290,848 | ) |  | 3,946,442 |
Accumulated other comprehensive (loss) income | (53,058 | ) |  | — |  |  | (50,931 | ) |  | 50,931 |  |  | (53,058 | )
Retained (deficit) earnings | (1,711,080 | ) |  | (6,971 | ) |  | (161,008 | ) |  | 167,979 |  |  | (1,711,080 | )
Total stockholders' equity | 2,183,892 |  |  | 26,851 |  |  | 45,087 |  |  | (71,938 | ) |  | 2,183,892 |
Total liabilities and stockholders' equity | $ | 4,245,189 |  |  | $ | 493,172 |  |  | $ | 45,213 |  |  | $ | (560,429 | ) |  | $ | 4,223,145 |
CONDENSED CONSOLIDATING BALANCE SHEETS (Amounts in thousands)
| December 31, 2015
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Assets |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 112,494 |  |  | $ | 479 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 112,974 |
Accounts receivable - oil and gas | 72,241 |  |  | 54 |  |  | — |  |  | (423 | ) |  | 71,872 |
Accounts receivable - related parties | 16 |  |  | — |  |  | — |  |  | — |  |  | 16 |
Accounts receivable - intercompany | 326,475 |  |  | 60 |  |  | — |  |  | (326,535 | ) |  | — |
Prepaid expenses and other current assets | 3,905 |  |  | — |  |  | — |  |  | — |  |  | 3,905 |
Short-term derivative instruments | 142,794 |  |  | — |  |  | — |  |  | — |  |  | 142,794 |
Total current assets | 657,925 |  |  | 593 |  |  | 1 |  |  | (326,958 | ) |  | 331,561 |
Property and equipment: |  |  |  |  |  |  |  |  |
Oil and natural gas properties, full-cost accounting, | 5,108,258 |  |  | 316,813 |  |  | — |  |  | (729 | ) |  | 5,424,342 |
Other property and equipment | 33,128 |  |  | 43 |  |  | — |  |  | — |  |  | 33,171 |
Accumulated depletion, depreciation, amortization and impairment | (2,829,081 | ) |  | (29 | ) |  | — |  |  | — |  |  | (2,829,110 | )
Property and equipment, net | 2,312,305 |  |  | 316,827 |  |  | — |  |  | (729 | ) |  | 2,628,403 |
Other assets: |  |  |  |  |  |  |  |  |
Equity investments and investments in subsidiaries | 231,892 |  |  | — |  |  | 50,644 |  |  | (40,143 | ) |  | 242,393 |
Long-term derivative instruments | 51,088 |  |  | — |  |  | — |  |  | — |  |  | 51,088 |
Deferred tax asset | 74,925 |  |  | — |  |  | — |  |  | — |  |  | 74,925 |
Other assets | 6,364 |  |  | — |  |  | — |  |  | — |  |  | 6,364 |
Total other assets | 364,269 |  |  | — |  |  | 50,644 |  |  | (40,143 | ) |  | 374,770 |
Total assets | $ | 3,334,499 |  |  | $ | 317,420 |  |  | $ | 50,645 |  |  | $ | (367,830 | ) |  | $ | 3,334,734 |
Liabilities and Stockholders' Equity |  |  |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |  |
Accounts payable and accrued liabilities | $ | 264,893 |  |  | $ | 527 |  |  | $ | — |  |  | $ | (292 | ) |  | $ | 265,128 |
Accounts payable - intercompany | — |  |  | 326,541 |  |  | 124 |  |  | (326,665 | ) |  | — |
Asset retirement obligation | 75 |  |  | — |  |  | — |  |  | — |  |  | 75 |
Derivative instruments | 437 |  |  | — |  |  | — |  |  | — |  |  | 437 |
Deferred tax liability | 50,697 |  |  | — |  |  | — |  |  | — |  |  | 50,697 |
Current maturities of long-term debt | 179 |  |  | — |  |  | — |  |  | — |  |  | 179 |
Total current liabilities | 316,281 |  |  | 327,068 |  |  | 124 |  |  | (326,957 | ) |  | 316,516 |
Long-term derivative instrument | 6,935 |  |  | — |  |  | — |  |  | — |  |  | 6,935 |
Asset retirement obligation | 26,362 |  |  | — |  |  | — |  |  | — |  |  | 26,362 |
Long-term debt, net of current maturities | 946,084 |  |  | — |  |  | — |  |  | — |  |  | 946,084 |
Total liabilities | 1,295,662 |  |  | 327,068 |  |  | 124 |  |  | (326,957 | ) |  | 1,295,897 |
Stockholders' equity: |  |  |  |  |  |  |  |  |
Common stock | 1,082 |  |  | — |  |  | — |  |  | — |  |  | 1,082 |
Paid-in capital | 2,824,303 |  |  | 322 |  |  | 241,553 |  |  | (241,875 | ) |  | 2,824,303 |
Accumulated other comprehensive (loss) income | (55,177 | ) |  | — |  |  | (55,177 | ) |  | 55,177 |  |  | (55,177 | )
Retained (deficit) earnings | (731,371 | ) |  | (9,970 | ) |  | (135,855 | ) |  | 145,825 |  |  | (731,371 | )
Total stockholders' equity | 2,038,837 |  |  | (9,648 | ) |  | 50,521 |  |  | (40,873 | ) |  | 2,038,837 |
Total liabilities and stockholders' equity | $ | 3,334,499 |  |  | $ | 317,420 |  |  | $ | 50,645 |  |  | $ | (367,830 | ) |  | $ | 3,334,734 |
Condensed Consolidating Statements of Operations | CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS (Amounts in thousands)
| Year Ended December 31, 2016
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Total revenues | $ | 381,931 |  |  | $ | 3,979 |  |  | $ | — |  |  | $ | — |  |  | $ | 385,910 |
Costs and expenses: |  |  |  |  |  |  |  |  |
Lease operating expenses | 68,034 |  |  | 843 |  |  | — |  |  | — |  |  | 68,877 |
Production taxes | 13,121 |  |  | 155 |  |  | — |  |  | — |  |  | 13,276 |
Midstream gathering and processing | 165,400 |  |  | 572 |  |  | — |  |  | — |  |  | 165,972 |
Depreciation, depletion and amortization | 245,970 |  |  | 4 |  |  | — |  |  | — |  |  | 245,974 |
Impairment of oil and gas properties | 715,495 |  |  | — |  |  | — |  |  | — |  |  | 715,495 |
General and administrative | 43,896 |  |  | (490 | ) |  | 3 |  |  | — |  |  | 43,409 |
Accretion expense | 1,057 |  |  | — |  |  | — |  |  | — |  |  | 1,057 |
| 1,252,973 |  |  | 1,084 |  |  | 3 |  |  | — |  |  | 1,254,060 |
(LOSS) INCOME FROM OPERATIONS | (871,042 | ) |  | 2,895 |  |  | (3 | ) |  | — |  |  | (868,150 | )
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |
Interest expense | 63,529 |  |  | 1 |  |  | — |  |  | — |  |  | 63,530 |
Interest income | (1,230 | ) |  | — |  |  | — |  |  | — |  |  | (1,230 | )
Insurance proceeds | (5,718 | ) |  | — |  |  | — |  |  | — |  |  | (5,718 | )
Loss on debt extinguishment | 23,776 |  |  | — |  |  | — |  |  | — |  |  | 23,776 |
Loss (income) from equity method investments and investments in subsidiaries | 31,078 |  |  | (89 | ) |  | 25,150 |  |  | (22,154 | ) |  | 33,985 |
Other expense (income) | 145 |  |  | (16 | ) |  | — |  |  | — |  |  | 129 |
| 111,580 |  |  | (104 | ) |  | 25,150 |  |  | (22,154 | ) |  | 114,472 |
(LOSS) INCOME BEFORE INCOME TAXES | (982,622 | ) |  | 2,999 |  |  | (25,153 | ) |  | 22,154 |  |  | (982,622 | )
INCOME TAX BENEFIT | (2,913 | ) |  | — |  |  | — |  |  | — |  |  | (2,913 | )
NET (LOSS) INCOME | $ | (979,709 | ) |  | $ | 2,999 |  |  | $ | (25,153 | ) |  | $ | 22,154 |  |  | $ | (979,709 | )
CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS (Amounts in thousands)
| Year Ended December 31, 2015
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Total revenues | $ | 707,868 |  |  | $ | 1,122 |  |  | $ | — |  |  | $ | — |  |  | $ | 708,990 |
Costs and expenses: |  |  |  |  |  |  |  |  |
Lease operating expenses | 68,632 |  |  | 843 |  |  | — |  |  | — |  |  | 69,475 |
Production taxes | 14,618 |  |  | 122 |  |  | — |  |  | — |  |  | 14,740 |
Midstream gathering and processing | 138,526 |  |  | 64 |  |  | — |  |  | — |  |  | 138,590 |
Depreciation, depletion and amortization | 337,689 |  |  | 5 |  |  | — |  |  | — |  |  | 337,694 |
Impairment of oil and gas properties | 1,440,418 |  |  | — |  |  | — |  |  | — |  |  | 1,440,418 |
General and administrative | 41,892 |  |  | 55 |  |  | 20 |  |  | — |  |  | 41,967 |
Accretion expense | 820 |  |  | — |  |  | — |  |  | — |  |  | 820 |
| 2,042,595 |  |  | 1,089 |  |  | 20 |  |  | — |  |  | 2,043,704 |
(LOSS) INCOME FROM OPERATIONS | (1,334,727 | ) |  | 33 |  |  | (20 | ) |  | — |  |  | (1,334,714 | )
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |
Interest expense | 51,221 |  |  | — |  |  | — |  |  | — |  |  | 51,221 |
Interest income | (643 | ) |  | — |  |  | — |  |  | — |  |  | (643 | )
Insurance proceeds | (10,015 | ) |  | — |  |  | — |  |  | — |  |  | (10,015 | )
Loss (income) from equity method investments and investments in subsidiaries | 107,252 |  |  | — |  |  | 115,544 |  |  | (116,703 | ) |  | 106,093 |
Other expense (income) | (1,657 | ) |  | (346 | ) |  | — |  |  | 1,518 |  |  | (485 | )
| 146,158 |  |  | (346 | ) |  | 115,544 |  |  | (115,185 | ) |  | 146,171 |
(LOSS) INCOME BEFORE INCOME TAXES | (1,480,885 | ) |  | 379 |  |  | (115,564 | ) |  | 115,185 |  |  | (1,480,885 | )
INCOME TAX BENEFIT | (256,001 | ) |  | — |  |  | — |  |  | — |  |  | (256,001 | )
NET (LOSS) INCOME | $ | (1,224,884 | ) |  | $ | 379 |  |  | $ | (115,564 | ) |  | $ | 115,185 |  |  | $ | (1,224,884 | )
CONDENSED CONSOLIDATING STATEMENTS OF OPERATIONS (Amounts in thousands)
| Year Ended December 31, 2014
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Total revenues | $ | 668,961 |  |  | $ | 1,801 |  |  | $ | — |  |  | $ | — |  |  | $ | 670,762 |
Costs and expenses: |  |  |  |  |  |  |  |  |
Lease operating expenses | 51,238 |  |  | 953 |  |  | — |  |  | — |  |  | 52,191 |
Production taxes | 23,803 |  |  | 203 |  |  | — |  |  | — |  |  | 24,006 |
Midstream gathering and processing | 64,402 |  |  | 65 |  |  | — |  |  | — |  |  | 64,467 |
Depreciation, depletion and amortization | 265,428 |  |  | 3 |  |  | — |  |  | — |  |  | 265,431 |
General and administrative | 37,846 |  |  | 446 |  |  | (2 | ) |  | — |  |  | 38,290 |
Accretion expense | 761 |  |  | — |  |  | — |  |  | — |  |  | 761 |
Gain on sale of assets | (11 | ) |  | — |  |  | — |  |  | — |  |  | (11 | )
| 443,467 |  |  | 1,670 |  |  | (2 | ) |  | — |  |  | 445,135 |
INCOME FROM OPERATIONS | 225,494 |  |  | 131 |  |  | 2 |  |  | — |  |  | 225,627 |
OTHER (INCOME) EXPENSE: |  |  |  |  |  |  |  |  |
Interest expense | 23,986 |  |  | — |  |  | — |  |  | — |  |  | 23,986 |
Interest income | (195 | ) |  | — |  |  | — |  |  | — |  |  | (195 | )
Litigation settlement | 25,500 |  |  | — |  |  | — |  |  | — |  |  | 25,500 |
Gain on contribution of investments | (84,470 | ) |  | — |  |  | — |  |  | — |  |  | (84,470 | )
(Income) loss from equity method investments and investments in subsidiaries | (139,965 | ) |  | — |  |  | 13,159 |  |  | (12,628 | ) |  | (139,434 | )
Other (income) expense | (106 | ) |  | (398 | ) |  | — |  |  | — |  |  | (504 | )
| (175,250 | ) |  | (398 | ) |  | 13,159 |  |  | (12,628 | ) |  | (175,117 | )
INCOME (LOSS) BEFORE INCOME TAXES | 400,744 |  |  | 529 |  |  | (13,157 | ) |  | 12,628 |  |  | 400,744 |
INCOME TAX EXPENSE | 153,341 |  |  | — |  |  | — |  |  | — |  |  | 153,341 |
NET INCOME (LOSS) | $ | 247,403 |  |  | $ | 529 |  |  | $ | (13,157 | ) |  | $ | 12,628 |  |  | $ | 247,403 |
Condensed Consolidating Statements of Comprehensive Income (Loss) |
| Year Ended December 31, 2016
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net (loss) income | $ | (979,709 | ) |  | $ | 2,999 |  |  | $ | (25,153 | ) |  | $ | 22,154 |  |  | $ | (979,709 | )
Foreign currency translation adjustment | 2,119 |  |  | 778 |  |  | 1,341 |  |  | (2,119 | ) |  | 2,119 |
Other comprehensive income (loss) | 2,119 |  |  | 778 |  |  | 1,341 |  |  | (2,119 | ) |  | 2,119 |
Comprehensive (loss) income | $ | (977,590 | ) |  | $ | 3,777 |  |  | $ | (23,812 | ) |  | $ | 20,035 |  |  | $ | (977,590 | )
| Year Ended December 31, 2015
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net (loss) income | $ | (1,224,884 | ) |  | $ | 379 |  |  | $ | (115,564 | ) |  | $ | 115,185 |  |  | $ | (1,224,884 | )
Foreign currency translation adjustment | (28,502 | ) |  | — |  |  | (28,502 | ) |  | 28,502 |  |  | (28,502 | )
Other comprehensive (loss) income | (28,502 | ) |  | — |  |  | (28,502 | ) |  | 28,502 |  |  | (28,502 | )
Comprehensive (loss) income | $ | (1,253,386 | ) |  | $ | 379 |  |  | $ | (144,066 | ) |  | $ | 143,687 |  |  | $ | (1,253,386 | )
| Year Ended December 31, 2014
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net income (loss) | $ | 247,403 |  |  | $ | 529 |  |  | $ | (13,157 | ) |  | $ | 12,628 |  |  | $ | 247,403 |
Foreign currency translation adjustment | (16,894 | ) |  | — |  |  | (16,894 | ) |  | 16,894 |  |  | $ | (16,894 | )
Other comprehensive (loss) income | (16,894 | ) |  | — |  |  | (16,894 | ) |  | 16,894 |  |  | (16,894 | )
Comprehensive income (loss) | $ | 230,509 |  |  | $ | 529 |  |  | $ | (30,051 | ) |  | $ | 29,522 |  |  | $ | 230,509 |
Condensed Consolidating Statements of Cash Flows |
| Year Ended December 31, 2016
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net cash provided by (used in) operating activities | $ | 336,330 |  |  | $ | (9,486 | ) |  | $ | (2 | ) |  | $ | 11,001 |  |  | $ | 337,843 |
Net cash (used in) provided by investing activities | (905,582 | ) |  | (22,500 | ) |  | (15,472 | ) |  | 37,972 |  |  | (905,582 | )
Net cash provided by (used in) financing activities | 1,730,640 |  |  | 33,500 |  |  | 15,473 |  |  | (48,973 | ) |  | 1,730,640 |
Net increase (decrease) in cash and cash equivalents | 1,161,388 |  |  | 1,514 |  |  | (1 | ) |  | — |  |  | 1,162,901 |
Cash and cash equivalents at beginning of period | 112,494 |  |  | 479 |  |  | 1 |  |  | — |  |  | 112,974 |
Cash and cash equivalents at end of period | $ | 1,273,882 |  |  | $ | 1,993 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,275,875 |
| Year Ended December 31, 2015
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net cash provided by (used in) operating activities | $ | 344,018 |  |  | $ | (21,839 | ) |  | $ | (2 | ) |  | $ | 2 |  |  | $ | 322,179 |
Net cash (used in) provided by investing activities | (1,595,767 | ) |  | 21,514 |  |  | (14,472 | ) |  | 14,472 |  |  | (1,574,253 | )
Net cash provided by (used in) financing activities | 1,222,708 |  |  | — |  |  | 14,474 |  |  | (14,474 | ) |  | 1,222,708 |
Net decrease in cash and cash equivalents | (29,041 | ) |  | (325 | ) |  | — |  |  | — |  |  | (29,366 | )
Cash and cash equivalents at beginning of period | 141,535 |  |  | 804 |  |  | 1 |  |  | — |  |  | 142,340 |
Cash and cash equivalents at end of period | $ | 112,494 |  |  | $ | 479 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 112,974 |
| Year Ended December 31, 2014
| Parent |  | Guarantors |  | Non-Guarantor |  | Eliminations |  | Consolidated
Net cash provided by (used in) operating activities | $ | 388,177 |  |  | $ | 21,698 |  |  | $ | (2 | ) |  | $ | — |  |  | $ | 409,873 |
Net cash (used in) provided by investing activities | (1,108,241 | ) |  | (28,419 | ) |  | (18,799 | ) |  | 18,802 |  |  | (1,136,657 | )
Net cash provided by (used in) financing activities | 410,168 |  |  | — |  |  | 18,802 |  |  | (18,802 | ) |  | 410,168 |
Net (decrease) increase in cash and cash equivalents | (309,896 | ) |  | (6,721 | ) |  | 1 |  |  | — |  |  | (316,616 | )
Cash and cash equivalents at beginning of period | 451,431 |  |  | 7,525 |  |  | — |  |  | — |  |  | 458,956 |
Cash and cash equivalents at end of period | $ | 141,535 |  |  | $ | 804 |  |  | $ | 1 |  |  | $ | — |  |  | $ | 142,340 |

X
- Definition Schedule of Condensed Comprehensive Income [Table Text Block] + References No definition available. + Details
Name: | gpor_ScheduleofCondensedComprehensiveIncomeTableTextBlock
Namespace Prefix: | gpor_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of condensed balance sheet, including, but not limited to, balance sheets of consolidated entities and consolidation eliminations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCondensedBalanceSheetTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of condensed cash flow statement, including, but not limited to, cash flow statements of consolidated entities and consolidation eliminations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCondensedCashFlowStatementTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of condensed income statement, including, but not limited to, income statements of consolidated entities and consolidation eliminations. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCondensedIncomeStatementTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration