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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Operating activities |  |  |
Net income (loss) | $ 122,982 | $ 299,764 | $ 138,007
Adjustments to reconcile net income to net cash provided by operating activities |  |  |
Unrealized loss (gain) on derivatives | 53,727 | (65,085) | (9,715)
Depletion, depreciation and amortization | 350,540 | 265,142 | 177,502
Accretion of asset retirement obligations | 1,822 | 1,530 | 1,290
Full-cost ceiling impairment | 0 | 0 | 0
Stock-based compensation expense | 18,505 | 17,200 | 16,654
Prepayment premium on extinguishment of debt | 0 | 31,226 | 0
Deferred income tax provision (benefit) | 35,532 | (7,236) | 0
Amortization of debt issuance cost | 2,484 | 1,357 | 468
Net loss (gain) on asset sales and inventory impairment | 967 | 196 | (23)
Changes in operating assets and liabilities |  |  |
Accounts receivable | (43,261) | (4,934) | (82,549)
Lease and well equipment inventory | 4,777 | (12,176) | (3,623)
Prepaid expenses | (4,844) | (1,770) | (2,960)
Other assets | 678 | 3,418 | (6,425)
Accounts payable, accrued liabilities and other current liabilities | (19,004) | 68,647 | 33,559
Royalties payable | 20,417 | 3,418 | 37,370
Advances from joint interest owners | 3,869 | 8,179 | 1,089
Other long-term liabilities | 2,851 | (353) | (1,519)
Net cash provided by operating activities | 552,042 | 608,523 | 299,125
Investing activities |  |  |
Oil and natural gas properties capital expenditures | (730,161) | (1,357,802) | (699,445)
Midstream capital expenditures | (192,035) | (163,222) | (115,128)
Expenditures for other property and equipment | (3,701) | (2,562) | (5,688)
Proceeds from sale of assets | 21,921 | 8,333 | 977
Net cash used in investing activities | (903,976) | (1,515,253) | (819,284)
Financing activities |  |  |
Repayments of borrowings | (35,000) | (370,000) | 0
Borrowings under Credit Agreement | 250,000 | 410,000 | 0
Borrowings under San Mateo Credit Facility | 68,000 | 220,000 | 0
Cost to enter into or amend credit facilities | (1,443) | (3,077) | 0
Proceeds from issuance of senior unsecured notes | 0 | 1,051,500 | 0
Cost to issue senior unsecured notes | 0 | (14,098) | 0
Purchase of senior unsecured notes | 0 | (605,780) | 0
Proceeds from issuance of common stock | 0 | 226,612 | 208,720
Cost to issue equity | 0 | (204) | (280)
Proceeds from stock options exercised | 3,300 | 815 | 2,920
Contributions related to formation of San Mateo I | 14,700 | 14,700 | 171,500
Contributions from non-controlling interest owners of less-than-wholly-owned subsidiaries | 77,330 | 85,750 | 44,100
Distributions to non-controlling interest owners of less-than-wholly-owned subsidiaries | (39,200) | (121,520) | (10,045)
Taxes paid related to net share settlement of stock-based compensation | (3,691) | (6,466) | (5,763)
Purchase of non-controlling interest of less-than-wholly-owned subsidiary | 0 | 0 | (2,653)
Cash paid under financing lease obligations | (918) | 0 | 0
Net cash provided by financing activities | 333,078 | 888,232 | 408,499
Decrease in cash and restricted cash | (18,856) | (18,498) | (111,660)
Cash and restricted cash at beginning of year | 83,984 | 102,482 | 214,142
Cash and restricted cash at end of year | $ 65,128 | $ 83,984 | $ 102,482

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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The cash inflow from amounts received from issuance of long-term debt that is wholly or partially secured by collateral. Excludes proceeds from tax exempt secured debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of cash inflow from a noncontrolling interest. Includes, but is not limited to, purchase of additional shares or other increase in noncontrolling interest ownership. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition Amount of cash inflow (outflow) from (to) a noncontrolling interest. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition Aggregate cash proceeds received from a combination of transactions that are classified as investing activities in which assets, which may include one or more investments, are sold to third-party buyers. This element can be used by entities to aggregate proceeds from all asset sales that are classified as investing activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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- Definition Amount of cash inflow from exercise of option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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- Definition The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3291-108585 + Details
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