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Condensed Consolidating Financial Information (Tables) | 3 Months Ended
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Mar. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Condensed Consolidating Balance Sheet | Condensed Consolidating Balance Sheet
| March 31, 2018
| Parent/ Issuer |  | Combined Guarantor Subsidiaries |  | Combined Non-guarantor Subsidiaries |  | Intercompany Eliminations |  | Consolidated
| (In thousands, except share data)
ASSETS |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 179 |  |  | $ | 13,508 |  |  | $ | 4,048 |  |  | $ | — |  |  | $ | 17,735 |
Accounts receivable, net | — |  |  | 370,001 |  |  | 977 |  |  | — |  |  | 370,978 |
Accounts receivable - affiliates | 373,954 |  |  | 55,939 |  |  | 57,087 |  |  | (486,980 | ) |  | — |
Inventory | — |  |  | 23,039 |  |  | — |  |  | — |  |  | 23,039 |
Prepaid expenses | 447 |  |  | 4,760 |  |  | 747 |  |  | — |  |  | 5,954 |
Intangible assets, net | — |  |  | 958 |  |  | — |  |  | — |  |  | 958 |
Other current assets | — |  |  | 193 |  |  | — |  |  | — |  |  | 193 |
Total current assets | 374,580 |  |  | 468,398 |  |  | 62,859 |  |  | (486,980 | ) |  | 418,857 |
Property, plant and equipment |  |  |  |  |  |  |  |  |
Oil and gas properties (successful efforts method) | — |  |  | 8,914,811 |  |  | — |  |  | (3,715 | ) |  | 8,911,096 |
Other property and equipment | — |  |  | 220,293 |  |  | 743,578 |  |  | — |  |  | 963,871 |
Less: accumulated depreciation, depletion, amortization and impairment | — |  |  | (2,647,665 | ) |  | (40,696 | ) |  | — |  |  | (2,688,361 | )
Total property, plant and equipment, net | — |  |  | 6,487,439 |  |  | 702,882 |  |  | (3,715 | ) |  | 7,186,606 |
Investments in and advances to subsidiaries | 5,198,126 |  |  | 428,245 |  |  | — |  |  | (5,626,371 | ) |  | — |
Deferred income taxes | 191,671 |  |  | — |  |  | — |  |  | (191,671 | ) |  | — |
Long-term inventory | — |  |  | 12,506 |  |  | — |  |  | — |  |  | 12,506 |
Other assets | — |  |  | 19,062 |  |  | 1,899 |  |  | — |  |  | 20,961 |
Total assets | $ | 5,764,377 |  |  | $ | 7,415,650 |  |  | $ | 767,640 |  |  | $ | (6,308,737 | ) |  | $ | 7,638,930 |
LIABILITIES AND STOCKHOLDERS’ EQUITY |  |  |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Accounts payable | $ | — |  |  | $ | 15,534 |  |  | $ | 593 |  |  | $ | — |  |  | $ | 16,127 |
Accounts payable - affiliates | 40,406 |  |  | 431,041 |  |  | 15,533 |  |  | (486,980 | ) |  | — |
Revenues and production taxes payable | — |  |  | 245,198 |  |  | — |  |  | — |  |  | 245,198 |
Accrued liabilities | 284 |  |  | 165,899 |  |  | 67,239 |  |  | — |  |  | 233,422 |
Accrued interest payable | 19,872 |  |  | 736 |  |  | 73 |  |  | — |  |  | 20,681 |
Derivative instruments | — |  |  | 149,657 |  |  | — |  |  | — |  |  | 149,657 |
Advances from joint interest partners | — |  |  | 4,888 |  |  | — |  |  | — |  |  | 4,888 |
Other current liabilities | — |  |  | 40 |  |  | — |  |  | — |  |  | 40 |
Total current liabilities | 60,562 |  |  | 1,012,993 |  |  | 83,438 |  |  | (486,980 | ) |  | 670,013 |
Long-term debt | 1,953,534 |  |  | 626,000 |  |  | 117,000 |  |  | — |  |  | 2,696,534 |
Deferred income taxes | — |  |  | 498,420 |  |  | — |  |  | (191,671 | ) |  | 306,749 |
Asset retirement obligations | — |  |  | 50,624 |  |  | 1,331 |  |  | — |  |  | 51,955 |
Derivative instruments | — |  |  | 19,699 |  |  | — |  |  | — |  |  | 19,699 |
Other liabilities | — |  |  | 7,822 |  |  | — |  |  | — |  |  | 7,822 |
Total liabilities | 2,014,096 |  |  | 2,215,558 |  |  | 201,769 |  |  | (678,651 | ) |  | 3,752,772 |
Stockholders’ equity |  |  |  |  |  |  |  |  |
Capital contributions from affiliates | — |  |  | 3,640,084 |  |  | 224,008 |  |  | (3,864,092 | ) |  | — |
Common stock, $0.01 par value: 450,000,000 shares authorized; 319,384,813 shares issued and 317,363,008 shares outstanding | 3,154 |  |  | — |  |  | — |  |  | — |  |  | 3,154 |
Treasury stock, at cost: 2,021,805 shares | (28,200 | ) |  | — |  |  | — |  |  | — |  |  | (28,200 | )
Additional paid-in-capital | 3,055,003 |  |  | 8,994 |  |  | — |  |  | (8,994 | ) |  | 3,055,003 |
Retained earnings | 720,324 |  |  | 1,413,388 |  |  | 21,593 |  |  | (1,436,730 | ) |  | 718,575 |
Oasis share of stockholders’ equity | 3,750,281 |  |  | 5,062,466 |  |  | 245,601 |  |  | (5,309,816 | ) |  | 3,748,532 |
Non-controlling interests | — |  |  | 137,626 |  |  | 320,270 |  |  | (320,270 | ) |  | 137,626 |
Total stockholders’ equity | 3,750,281 |  |  | 5,200,092 |  |  | 565,871 |  |  | (5,630,086 | ) |  | 3,886,158 |
Total liabilities and stockholders’ equity | $ | 5,764,377 |  |  | $ | 7,415,650 |  |  | $ | 767,640 |  |  | $ | (6,308,737 | ) |  | $ | 7,638,930 |
Condensed Consolidating Balance Sheet
| December 31, 2017
| Parent/ Issuer |  | Combined Guarantor Subsidiaries |  | Combined Non-guarantor Subsidiaries |  | Intercompany Eliminations |  | Consolidated
| (In thousands, except share data)
ASSETS |  |  |  |  |  |  |  |  |
Current assets |  |  |  |  |  |  |  |  |
Cash and cash equivalents | $ | 178 |  |  | $ | 15,659 |  |  | $ | 883 |  |  | $ | — |  |  | $ | 16,720 |
Accounts receivable, net | — |  |  | 362,746 |  |  | 834 |  |  | — |  |  | 363,580 |
Accounts receivable - affiliates | 425,668 |  |  | 46,020 |  |  | 85,818 |  |  | (557,506 | ) |  | — |
Inventory | — |  |  | 19,367 |  |  | — |  |  | — |  |  | 19,367 |
Prepaid expenses | 267 |  |  | 6,586 |  |  | 778 |  |  | — |  |  | 7,631 |
Derivative instruments | — |  |  | 344 |  |  | — |  |  | — |  |  | 344 |
Other current assets | — |  |  | 193 |  |  | — |  |  | — |  |  | 193 |
Total current assets | 426,113 |  |  | 450,915 |  |  | 88,313 |  |  | (557,506 | ) |  | 407,835 |
Property, plant and equipment |  |  |  |  |  |  |  |  |
Oil and gas properties (successful efforts method) | — |  |  | 7,840,921 |  |  | — |  |  | (1,966 | ) |  | 7,838,955 |
Other property and equipment | — |  |  | 214,818 |  |  | 653,928 |  |  | — |  |  | 868,746 |
Less: accumulated depreciation, depletion, amortization and impairment | — |  |  | (2,499,867 | ) |  | (34,348 | ) |  | — |  |  | (2,534,215 | )
Total property, plant and equipment, net | — |  |  | 5,555,872 |  |  | 619,580 |  |  | (1,966 | ) |  | 6,173,486 |
Investments in and advances to subsidiaries | 4,790,976 |  |  | 422,132 |  |  | — |  |  | (5,213,108 | ) |  | — |
Derivative instruments | — |  |  | 9 |  |  | — |  |  | — |  |  | 9 |
Deferred income taxes | 183,568 |  |  | — |  |  | — |  |  | (183,568 | ) |  | — |
Long-term inventory | — |  |  | 12,200 |  |  | — |  |  | — |  |  | 12,200 |
Other assets | — |  |  | 19,587 |  |  | 2,013 |  |  | — |  |  | 21,600 |
Total assets | $ | 5,400,657 |  |  | $ | 6,460,715 |  |  | $ | 709,906 |  |  | $ | (5,956,148 | ) |  | $ | 6,615,130 |
LIABILITIES AND STOCKHOLDERS’ EQUITY |  |  |  |  |  |  |  |  |
Current liabilities |  |  |  |  |  |  |  |  |
Accounts payable | $ | — |  |  | $ | 13,370 |  |  | $ | — |  |  | $ | — |  |  | $ | 13,370 |
Accounts payable - affiliates | 34,382 |  |  | 511,486 |  |  | 11,638 |  |  | (557,506 | ) |  | — |
Revenues and production taxes payable | — |  |  | 213,995 |  |  | — |  |  | — |  |  | 213,995 |
Accrued liabilities | 216 |  |  | 177,446 |  |  | 58,818 |  |  | — |  |  | 236,480 |
Accrued interest payable | 38,796 |  |  | 53 |  |  | 114 |  |  | — |  |  | 38,963 |
Derivative instruments | — |  |  | 115,716 |  |  | — |  |  | — |  |  | 115,716 |
Advances from joint interest partners | — |  |  | 4,916 |  |  | — |  |  | — |  |  | 4,916 |
Other current liabilities | — |  |  | 40 |  |  | — |  |  | — |  |  | 40 |
Total current liabilities | 73,394 |  |  | 1,037,022 |  |  | 70,570 |  |  | (557,506 | ) |  | 623,480 |
Long-term debt | 1,949,606 |  |  | 70,000 |  |  | 78,000 |  |  | — |  |  | 2,097,606 |
Deferred income taxes | — |  |  | 489,489 |  |  | — |  |  | (183,568 | ) |  | 305,921 |
Asset retirement obligations | — |  |  | 47,195 |  |  | 1,316 |  |  | — |  |  | 48,511 |
Derivative instruments | — |  |  | 19,851 |  |  | — |  |  | — |  |  | 19,851 |
Other liabilities | — |  |  | 6,182 |  |  | — |  |  | — |  |  | 6,182 |
Total liabilities | 2,023,000 |  |  | 1,669,739 |  |  | 149,886 |  |  | (741,074 | ) |  | 3,101,551 |
Stockholders’ equity |  |  |  |  |  |  |  |  |
Capital contributions from affiliates | — |  |  | 3,264,691 |  |  | 234,935 |  |  | (3,499,626 | ) |  | — |
Common stock, $0.01 par value: 450,000,000 shares authorized; 270,627,014 shares issued and 269,295,466 shares outstanding | 2,668 |  |  | — |  |  | — |  |  | — |  |  | 2,668 |
Treasury stock, at cost: 1,331,548 shares | (22,179 | ) |  | — |  |  | — |  |  | — |  |  | (22,179 | )
Additional paid-in-capital | 2,677,217 |  |  | 8,922 |  |  | — |  |  | (8,922 | ) |  | 2,677,217 |
Retained earnings | 719,951 |  |  | 1,379,475 |  |  | 11,639 |  |  | (1,393,080 | ) |  | 717,985 |
Oasis share of stockholders’ equity | 3,377,657 |  |  | 4,653,088 |  |  | 246,574 |  |  | (4,901,628 | ) |  | 3,375,691 |
Non-controlling interests | — |  |  | 137,888 |  |  | 313,446 |  |  | (313,446 | ) |  | 137,888 |
Total stockholders’ equity | 3,377,657 |  |  | 4,790,976 |  |  | 560,020 |  |  | (5,215,074 | ) |  | 3,513,579 |
Total liabilities and stockholders’ equity | $ | 5,400,657 |  |  | $ | 6,460,715 |  |  | $ | 709,906 |  |  | $ | (5,956,148 | ) |  | $ | 6,615,130 |
Condensed Consolidating Statement of Operations | Condensed Consolidating Statement of Operations
| Three Months Ended March 31, 2018
| Parent/ Issuer |  | Combined Guarantor Subsidiaries |  | Combined Non-guarantor Subsidiaries |  | Intercompany Eliminations |  | Consolidated
| (In thousands)
Revenues |  |  |  |  |  |  |  |  |
Oil and gas revenues | — |  |  | 363,671 |  |  | — |  |  | — |  |  | $ | 363,671 |
Purchased oil and gas sales | — |  |  | 18,037 |  |  | — |  |  | — |  |  | 18,037 |
Midstream revenues | — |  |  | 1,150 |  |  | 61,421 |  |  | (34,649 | ) |  | 27,922 |
Well services revenues | — |  |  | 11,586 |  |  | — |  |  | — |  |  | 11,586 |
Total revenues | — |  |  | 394,444 |  |  | 61,421 |  |  | (34,649 | ) |  | 421,216 |
Operating expenses |  |  |  |  |  |  |  |  |
Lease operating expenses | — |  |  | 55,699 |  |  | — |  |  | (10,918 | ) |  | 44,781 |
Midstream operating expenses | — |  |  | 746 |  |  | 17,116 |  |  | (9,877 | ) |  | 7,985 |
Well services operating expenses | — |  |  | 7,387 |  |  | — |  |  | — |  |  | 7,387 |
Marketing, transportation and gathering expenses | — |  |  | 26,672 |  |  | — |  |  | (5,659 | ) |  | 21,013 |
Purchased oil and gas expenses | — |  |  | 17,998 |  |  | — |  |  | — |  |  | 17,998 |
Production taxes | — |  |  | 31,000 |  |  | — |  |  | — |  |  | 31,000 |
Depreciation, depletion and amortization | — |  |  | 146,227 |  |  | 6,364 |  |  | (3,326 | ) |  | 149,265 |
Exploration expenses | — |  |  | 769 |  |  | — |  |  | — |  |  | 769 |
Impairment | — |  |  | 93 |  |  | — |  |  | — |  |  | 93 |
General and administrative expenses | 7,232 |  |  | 17,678 |  |  | 6,150 |  |  | (3,120 | ) |  | 27,940 |
Total operating expenses | 7,232 |  |  | 304,269 |  |  | 29,630 |  |  | (32,900 | ) |  | 308,231 |
Operating income (loss) | (7,232 | ) |  | 90,175 |  |  | 31,791 |  |  | (1,749 | ) |  | 112,985 |
Other income (expense) |  |  |  |  |  |  |  |  |
Equity in earnings of subsidiaries | 32,164 |  |  | 31,529 |  |  | — |  |  | (63,693 | ) |  | — |
Net loss on derivative instruments | — |  |  | (71,116 | ) |  | — |  |  | — |  |  | (71,116 | )
Interest expense, net of capitalized interest | (32,446 | ) |  | (4,438 | ) |  | (262 | ) |  | — |  |  | (37,146 | )
Other expense | — |  |  | (183 | ) |  | — |  |  | — |  |  | (183 | )
Total other expense | (282 | ) |  | (44,208 | ) |  | (262 | ) |  | (63,693 | ) |  | (108,445 | )
Income (loss) before income taxes | (7,514 | ) |  | 45,967 |  |  | 31,529 |  |  | (65,442 | ) |  | 4,540 |
Income tax benefit (expense) | 8,104 |  |  | (8,932 | ) |  | — |  |  | — |  |  | (828 | )
Net income including non-controlling interests | 590 |  |  | 37,035 |  |  | 31,529 |  |  | (65,442 | ) |  | 3,712 |
Less: Net income attributable to non-controlling interests | — |  |  | 3,122 |  |  | 21,574 |  |  | (21,574 | ) |  | 3,122 |
Net income attributable to Oasis | $ | 590 |  |  | $ | 33,913 |  |  | $ | 9,955 |  |  | $ | (43,868 | ) |  | $ | 590 |
Condensed Consolidating Statement of Operations
| Three Months Ended March 31, 2017
| Parent/ Issuer |  | Combined Guarantor Subsidiaries |  | Intercompany Eliminations |  | Consolidated
| (In thousands)
Revenues |  |  |  |  |  |  |
Oil and gas revenues | $ | — |  |  | $ | 237,252 |  |  | $ | — |  |  | $ | 237,252 |
Purchased oil and gas sales | — |  |  | 27,631 |  |  | — |  |  | 27,631 |
Midstream revenues | — |  |  | 14,606 |  |  | — |  |  | 14,606 |
Well services revenues | — |  |  | 5,627 |  |  | — |  |  | 5,627 |
Total revenues | — |  |  | 285,116 |  |  | — |  |  | 285,116 |
Operating expenses |  |  |  |  |  |  |
Lease operating expenses | — |  |  | 43,872 |  |  | — |  |  | 43,872 |
Midstream operating expenses | — |  |  | 3,327 |  |  | — |  |  | 3,327 |
Well services operating expenses | — |  |  | 4,560 |  |  | — |  |  | 4,560 |
Marketing, transportation and gathering expenses | — |  |  | 10,951 |  |  | — |  |  | 10,951 |
Purchased oil and gas expenses | — |  |  | 28,002 |  |  | — |  |  | 28,002 |
Production taxes | — |  |  | 20,299 |  |  | — |  |  | 20,299 |
Depreciation, depletion and amortization | — |  |  | 126,666 |  |  | — |  |  | 126,666 |
Exploration expenses | — |  |  | 1,489 |  |  | — |  |  | 1,489 |
Impairment | — |  |  | 2,682 |  |  | — |  |  | 2,682 |
General and administrative expenses | 7,065 |  |  | 16,111 |  |  | — |  |  | 23,176 |
Total operating expenses | 7,065 |  |  | 257,959 |  |  | — |  |  | 265,024 |
Operating income (loss) | (7,065 | ) |  | 27,157 |  |  | — |  |  | 20,092 |
Other income (expense) |  |  |  |  |  |  |
Equity in earnings of subsidiaries | 49,103 |  |  | — |  |  | (49,103 | ) |  | — |
Net gain on derivative instruments | — |  |  | 56,075 |  |  | — |  |  | 56,075 |
Interest expense, net of capitalized interest | (32,851 | ) |  | (3,470 | ) |  | — |  |  | (36,321 | )
Other income | — |  |  | 16 |  |  | — |  |  | 16 |
Total other income | 16,252 |  |  | 52,621 |  |  | (49,103 | ) |  | 19,770 |
Income before income taxes | 9,187 |  |  | 79,778 |  |  | (49,103 | ) |  | 39,862 |
Income tax benefit (expense) | 14,638 |  |  | (30,675 | ) |  | — |  |  | (16,037 | )
Net income | $ | 23,825 |  |  | $ | 49,103 |  |  | $ | (49,103 | ) |  | $ | 23,825 |
Condensed Consolidating Statement of Cash Flows | Condensed Consolidating Statement of Cash Flows
| Three Months Ended March 31, 2018
| Parent/ Issuer |  | Combined Guarantor Subsidiaries |  | Combined Non-guarantor Subsidiaries |  | Intercompany Eliminations |  | Consolidated
| (In thousands)
Cash flows from operating activities: |  |  |  |  |  |  |  |  |
Net income including non-controlling interests | $ | 590 |  |  | $ | 37,035 |  |  | $ | 31,529 |  |  | $ | (65,442 | ) |  | $ | 3,712 |
Adjustments to reconcile net income including non-controlling interests to net cash provided by operating activities: |  |  |  |  |  |  |  |  |
Equity in earnings of subsidiaries | (32,164 | ) |  | (31,529 | ) |  | — |  |  | 63,693 |  |  | — |
Depreciation, depletion and amortization | — |  |  | 146,227 |  |  | 6,364 |  |  | (3,326 | ) |  | 149,265 |
Impairment | — |  |  | 93 |  |  | — |  |  | — |  |  | 93 |
Deferred income taxes | (8,104 | ) |  | 8,932 |  |  | — |  |  | — |  |  | 828 |
Derivative instruments | — |  |  | 71,116 |  |  | — |  |  | — |  |  | 71,116 |
Equity-based compensation expenses | 6,418 |  |  | 273 |  |  | 63 |  |  | — |  |  | 6,754 |
Deferred financing costs amortization and other | 3,929 |  |  | 1,432 |  |  | 114 |  |  | — |  |  | 5,475 |
Working capital and other changes: |  |  |  |  |  |  |  |  |
Change in accounts receivable | 51,714 |  |  | (23,888 | ) |  | 36,992 |  |  | (70,526 | ) |  | (5,708 | )
Change in inventory | — |  |  | (3,672 | ) |  | — |  |  | — |  |  | (3,672 | )
Change in prepaid expenses | (180 | ) |  | 641 |  |  | 31 |  |  | — |  |  | 492 |
Change in long-term inventory and other assets | — |  |  | (315 | ) |  | — |  |  | — |  |  | (315 | )
Change in accounts payable, interest payable and accrued liabilities | (12,832 | ) |  | (66,000 | ) |  | 8,062 |  |  | 70,526 |  |  | (244 | )
Change in other liabilities | — |  |  | 563 |  |  | — |  |  | — |  |  | 563 |
Net cash provided by operating activities | 9,371 |  |  | 140,908 |  |  | 83,155 |  |  | (5,075 | ) |  | 228,359 |
Cash flows from investing activities: |  |  |  |  |  |  |  |  |
Capital expenditures | — |  |  | (169,994 | ) |  | (84,844 | ) |  | — |  |  | (254,838 | )
Acquisitions | — |  |  | (520,728 | ) |  | — |  |  | — |  |  | (520,728 | )
Derivative settlements | — |  |  | (36,974 | ) |  | — |  |  | — |  |  | (36,974 | )
Advances from joint interest partners | — |  |  | (28 | ) |  | — |  |  | — |  |  | (28 | )
Net cash used in investing activities | — |  |  | (727,724 | ) |  | (84,844 | ) |  | — |  |  | (812,568 | )
Cash flows from financing activities: |  |  |  |  |  |  |  |  |
Proceeds from Revolving Credit Facilities | — |  |  | 1,413,000 |  |  | 57,000 |  |  | — |  |  | 1,470,000 |
Principal payments on Revolving Credit Facilities | — |  |  | (857,000 | ) |  | (18,000 | ) |  | — |  |  | (875,000 | )
Deferred financing costs | — |  |  | (215 | ) |  | — |  |  | — |  |  | (215 | )
Purchases of treasury stock | (6,021 | ) |  | — |  |  | — |  |  | — |  |  | (6,021 | )
Distributions to non-controlling interests | — |  |  | 34,866 |  |  | (38,316 | ) |  | — |  |  | (3,450 | )
Investment in subsidiaries / capital contributions from parent | (3,259 | ) |  | (5,986 | ) |  | 4,170 |  |  | 5,075 |  |  | — |
Other | (90 | ) |  | — |  |  | — |  |  | — |  |  | (90 | )
Net cash provided by (used in) financing activities | (9,370 | ) |  | 584,665 |  |  | 4,854 |  |  | 5,075 |  |  | 585,224 |
Increase (decrease) in cash and cash equivalents | 1 |  |  | (2,151 | ) |  | 3,165 |  |  | — |  |  | 1,015 |
Cash and cash equivalents at beginning of period | 178 |  |  | 15,659 |  |  | 883 |  |  | — |  |  | 16,720 |
Cash and cash equivalents at end of period | $ | 179 |  |  | $ | 13,508 |  |  | $ | 4,048 |  |  | $ | — |  |  | $ | 17,735 |
Condensed Consolidating Statement of Cash Flows
| Three Months Ended March 31, 2017
| Parent/ Issuer |  | Combined Guarantor Subsidiaries |  | Intercompany Eliminations |  | Consolidated
| (In thousands)
Cash flows from operating activities: |  |  |  |  |  |  |
Net income | $ | 23,825 |  |  | $ | 49,103 |  |  | $ | (49,103 | ) |  | $ | 23,825 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |
Equity in earnings of subsidiaries | (49,103 | ) |  | — |  |  | 49,103 |  |  | — |
Depreciation, depletion and amortization | — |  |  | 126,666 |  |  | — |  |  | 126,666 |
Impairment | — |  |  | 2,682 |  |  | — |  |  | 2,682 |
Deferred income taxes | (14,638 | ) |  | 30,675 |  |  | — |  |  | 16,037 |
Derivative instruments | — |  |  | (56,075 | ) |  | — |  |  | (56,075 | )
Equity-based compensation expenses | 6,498 |  |  | 210 |  |  | — |  |  | 6,708 |
Deferred financing costs amortization and other | 3,665 |  |  | 1,275 |  |  | — |  |  | 4,940 |
Working capital and other changes: |  |  |  |  |  |  |
Change in accounts receivable | 51,230 |  |  | (27,952 | ) |  | (45,756 | ) |  | (22,478 | )
Change in inventory | — |  |  | (3,679 | ) |  | — |  |  | (3,679 | )
Change in prepaid expenses | (59 | ) |  | 341 |  |  | — |  |  | 282 |
Change in other current assets | (2 | ) |  | (108 | ) |  | — |  |  | (110 | )
Change in long-term inventory and other assets | — |  |  | (4 | ) |  | — |  |  | (4 | )
Change in accounts payable, interest payable and accrued liabilities | (13,321 | ) |  | (26,375 | ) |  | 45,756 |  |  | 6,060 |
Change in other current liabilities | — |  |  | 2,945 |  |  | — |  |  | 2,945 |
Net cash provided by operating activities | 8,095 |  |  | 99,704 |  |  | — |  |  | 107,799 |
Cash flows from investing activities: |  |  |  |  |  |  |
Capital expenditures | — |  |  | (96,047 | ) |  | — |  |  | (96,047 | )
Derivative settlements | — |  |  | (7,960 | ) |  | — |  |  | (7,960 | )
Advances from joint interest partners | — |  |  | (759 | ) |  | — |  |  | (759 | )
Net cash used in investing activities | — |  |  | (104,766 | ) |  | — |  |  | (104,766 | )
Cash flows from financing activities: |  |  |  |  |  |  |
Proceeds from Oasis Credit Facility | — |  |  | 246,000 |  |  | — |  |  | 246,000 |
Principal payments on Oasis Credit Facility | — |  |  | (241,000 | ) |  | — |  |  | (241,000 | )
Purchases of treasury stock | (5,419 | ) |  | — |  |  | — |  |  | (5,419 | )
Investment in subsidiaries / capital contributions from parent | (2,610 | ) |  | 2,610 |  |  | — |  |  | — |
Other | (55 | ) |  | — |  |  | — |  |  | (55 | )
Net cash provided by (used in) financing activities | (8,084 | ) |  | 7,610 |  |  | — |  |  | (474 | )
Increase in cash and cash equivalents | 11 |  |  | 2,548 |  |  | — |  |  | 2,559 |
Cash and cash equivalents at beginning of period | 166 |  |  | 11,060 |  |  | — |  |  | 11,226 |
Cash and cash equivalents at end of period | $ | 177 |  |  | $ | 13,608 |  |  | $ | — |  |  | $ | 13,785 |

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