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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Cash flows from operating activities: |  |  |
Net income (loss) | $ (81,297) | $ (409,086) | $ 40,809
Adjustments to reconcile net income (loss) to cash provided by (used in) operating activities: |  |  |
Depreciation, depletion, and amortization | 94,241 | 90,036 | 86,121
Impairment expense | 1,838 | 85,806 | 0
Debt extinguishment and commitment costs | 8,144 | 0 | 11,587
Non-cash interest expense | 5,663 | 6,902 | 9,118
Non-cash lower of cost and net realizable value adjustment | (10,132) | 10,595 | (3,752)
Change in value of common stock warrants | 0 | (4,270) | 3,199
Deferred taxes | (260) | (20,895) | (66,886)
Gain on sale of assets, net | (64,697) | 0 | 0
Stock-based compensation | 8,165 | 7,342 | 6,437
Unrealized (gain) loss on derivative contracts | (1,393) | (3,322) | 9,350
Equity losses from Laramie Energy, LLC | 0 | 46,905 | 89,751
Net changes in operating assets and liabilities: |  |  |
Trade accounts receivable | (83,955) | 117,801 | (36,652)
Collateral posted with broker for derivative transactions | 4,564 | 7,035 | (8,797)
Prepaid and other assets | (10,885) | 29,465 | (24,121)
Inventories | (350,652) | 171,880 | (191,688)
Deferred turnaround expenditures | (9,451) | (49,770) | (9,800)
Obligations under inventory financing agreements | 252,920 | (190,831) | 121,985
Accounts payable, other accrued liabilities, and operating lease ROU assets and liabilities | 209,565 | 67,193 | 68,969
Net cash provided by (used in) operating activities | (27,622) | (37,214) | 105,630
Cash flows from investing activities: |  |  |
Acquisitions of businesses, net of cash acquired | 0 | 0 | (273,399)
Proceeds related to asset acquisition | 0 | 0 | 3,226
Capital expenditures | (29,533) | (63,522) | (83,920)
Proceeds from sale of assets | 104,161 | 58 | 864
Net cash provided by (used in) investing activities | 74,628 | (63,464) | (353,229)
Cash flows from financing activities: |  |  |
Proceeds from sale of common stock, net of offering costs | 87,193 | 0 | 0
Proceeds from borrowings | 186,773 | 250,387 | 510,906
Repayments of borrowings | (329,315) | (159,489) | (241,336)
Net borrowings (repayments) on deferred payment arrangements and receivable advances | 61,098 | (41,645) | 43,422
Payment of deferred loan costs | (346) | (6,266) | (13,450)
Exercise of stock options | 0 | 0 | 8,171
Payments for debt extinguishment and commitment costs | (5,618) | 0 | (8,087)
Other financing activities, net | (879) | (428) | 582
Net cash provided by (used in) financing activities | (1,094) | 42,559 | 300,208
Net increase (decrease) in cash, cash equivalents, and restricted cash | 45,912 | (58,119) | 52,609
Cash, cash equivalents, and restricted cash at beginning of period | 70,309 | 128,428 | 75,819
Cash, cash equivalents, and restricted cash at end of period | 116,221 | 70,309 | 128,428
Net cash received (paid) for: |  |  |
Interest | (65,221) | (54,256) | (58,250)
Taxes | (795) | 190 | (136)
Non-cash investing and financing activities: |  |  |
Accrued capital expenditures | 8,177 | 4,686 | 6,386
Value of warrants reclassified to equity | 0 | 3,936 | 0
ROU assets obtained in exchange for new finance lease liabilities | 1,936 | 3,476 | 963
ROU assets obtained in exchange for new operating lease liabilities | 97,011 | 22,529 | 79,382
ROU assets terminated in exchange for release from finance lease liabilities | 0 | 0 | 0
ROU assets terminated in exchange for release from operating lease liabilities | 6,847 | 7,738 | 193
Common stock issued for business combination | 0 | 0 | 36,980
Common stock issued to repurchase convertible notes | $ 0 | $ 0 | $ 74,290

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