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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Statement of Cash Flows [Abstract] |  |
Net Income (Loss) Attributable to Parent | $ (40,894) | $ 50,808
Adjustments to reconcile net (loss) income to net cash provided by operating activities |  |
Provision for doubtful accounts | (335) | 0
Depreciation, depletion and amortization | 31,150 | 30,817
Impairment | 4,170 | 2,531
Debt issuance costs amortization | 117 | 78
Amortization of premiums and discounts on debt | (47) | (75)
Gain on extinguishment of debt | (1,151) | 0
Loss (gain) on derivative contracts | 18,330 | (34,183)
Cash paid on settlement of derivative contracts | (6,119) | (638)
Stock-based compensation | 15,872 | 3,261
Other | (235) | 360
Changes in operating assets and liabilities | 9,549 | 11,277
Net cash provided by operating activities | 30,407 | 64,236
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Capital expenditures for property, plant and equipment | (65,527) | (43,686)
Acquisition of assets | 0 | (48,073)
Proceeds from sale of assets | 955 | 10,203
Net cash used in investing activities | (64,572) | (81,556)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Repayments of borrowings | (36,304) | 0
Debt issuance costs | 0 | (1,488)
Cash paid for tax withholdings on vested stock awards | (1,661) | (1,424)
Net cash used in financing activities | (37,965) | (2,912)
NET DECREASE IN CASH, CASH EQUIVALENTS and RESTRICTED CASH | (72,130) | (20,232)
CASH, CASH EQUIVALENTS and RESTRICTED CASH, beginning of year | 101,308 | 174,071
CASH, CASH EQUIVALENTS and RESTRICTED CASH, end of period | 29,178 | 153,839
Supplemental Disclosure of Noncash Investing and Financing Activities |  |
Change in accrued capital expenditures | 28,258 | 2,954
Equity issued for debt | $ 0 | $ (268,779)

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- Definition Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.8) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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