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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities: |  |  |
Net Income (loss) | $ 154,658 | $ (654,545) | $ (803,692)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Depreciation, depletion, amortization and impairment | 483,945 | 849,178 | 670,910
Impairment of goodwill | 0 | 0 | 395,060
Dry holes and abandonments | 119 | 178 | 1,285
Deferred income tax expense (benefit) | 6,998 | (62,980) | (125,283)
Stock-based compensation expense | 21,099 | 21,558 | 26,572
Net gain on asset disposals | (12,075) | (1,426) | (3,079)
Net gain on insurance reimbursement | 0 | 0 | (4,172)
Write-down of capacity reservation contract | 0 | 0 | 9,207
Credit loss expense | 0 | (1,500) | 5,606
Restructuring expenses, non-cash |  | 0 | 25,067
Gain on early debt extinguishment | (2,461) | 0 | (3,596)
Amortization of debt discount and issuance costs | 835 | 839 | 912
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (209,226) | (147,356) | 173,862
Income taxes receivable/payable | 4,171 | 4,516 | 1,635
Inventory and other assets | (14,154) | (5,850) | 27,192
Accounts payable | 38,986 | 50,941 | (46,576)
Accrued liabilities | 65,091 | 50,271 | (61,266)
Other liabilities | 28,202 | (7,812) | (10,786)
Net cash used in operating activities of discontinued operations | 0 | (516) | 0
Net cash provided by operating activities | 566,188 | 95,496 | 278,858
Cash flows from investing activities: |  |  |
Acquisitions, net of cash acquired | 0 | (29,358) | 0
Purchases of property and equipment | (436,797) | (166,320) | (145,481)
Proceeds from disposal of assets and insurance claims | 26,074 | 23,339 | 20,929
Other | (2,504) | (522) | (424)
Net cash provided by investing activities of discontinued operations | 0 | 41,267 | 0
Net cash used in investing activities | (413,227) | (131,594) | (124,976)
Cash flows from financing activities: |  |  |
Purchases of treasury stock | (70,070) | (6,328) | (21,179)
Dividends paid | (43,096) | (15,605) | (18,862)
Proceeds from borrowings under revolving credit facility | 150,000 | 0 | 0
Repayment of borrowings under revolving credit facility | (150,000) | 0 | 0
Repayment of senior notes | (19,760) | 0 | (12,525)
Repayment of term loan | 0 | (50,000) | (50,000)
Debt issuance costs | (455) | 0 | (584)
Net cash used in financing activities | (133,381) | (71,933) | (103,150)
Effect of foreign exchange rate changes on cash | 449 | 640 | (2)
Net increase (decrease) in cash and cash equivalents | 20,029 | (107,391) | 50,730
Cash and cash equivalents at beginning of year | 117,524 | 224,915 | 174,185
Cash and cash equivalents at end of year | 137,553 | 117,524 | 224,915
Net cash (paid) received during the year for: |  |  |
Interest, net of capitalized interest of $260 in 2021, $431 in 2020 and $732 in 2019 | (39,855) | (40,464) | (43,368)
Income taxes | (1,526) | 4,196 | 3,709
Non-cash investing and financing activities: |  |  |
Net increase (decrease) in payables for purchases of property and equipment | 7,953 | 31,393 | (30,241)
Issuance of common stock for business acquisitions | 0 | 248,025 | 0
Net (increase) decrease in deposits on equipment purchases | (12,202) | 867 | 6,350
Cashless exercise of stock options | $ 10,368 | $ 0 | $ 0

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