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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 earnings (loss) | $ (246,771) | $ (271,592) | $ 143,019
Adjustments to reconcile net earnings (loss) to net cash provided by operations: |  |  |
Depreciation and amortization | 213,718 | 219,921 | 219,632
Provision (credit) for doubtful accounts | (138) | 3,716 | (873)
Provision (benefit) for deferred income taxes | (44,419) | 25,163 | 46,839
Gain on disposition of assets | (5,761) | (118) | (8,152)
Impairments and other charges | 340,713 | 561,274 | 35,525
Amortization of unearned share-based compensation | 15,713 | 14,722 | 13,612
Amortization of major maintenance costs | 33,213 | 30,214 | 23,962
Other | (640) | (90) | 1,683
Increase (decrease) in cash flows resulting from changes in: |  |  |
Accounts receivable | 29,126 | (124,941) | 43,078
Inventory | (19,248) | 47,076 | 122,773
Other assets | (38,335) | (29,994) | (25,470)
Income taxes payable | 480 | 8,826 | (2,503)
Accounts payable | 15,951 | (39,795) | (57,405)
Accrued and other liabilities | 27,974 | 558 | (43,907)
Net cash provided by operating activities | 321,576 | 444,940 | 511,813
Cash flows from investing activities: |  |  |
Capital expenditures | (98,015) | (148,185) | (248,164)
Acquisitions of businesses and marine equipment, net of cash acquired | 9,115 | 354,972 | 262,491
Proceeds from disposition of assets and other | 51,342 | 17,310 | 57,657
Net cash used in investing activities | (55,788) | (485,847) | (452,998)
Cash flows from financing activities: |  |  |
Borrowings (payments) on bank credit facilities, net | (248,105) | 250,024 | (417,376)
Borrowings on long-term debt | 0 | 0 | 500,000
Payments on long-term debt | (60,000) | (150,000) | (125,000)
Payment of debt issue costs | 0 | 0 | (2,397)
Return of investment to noncontrolling interests and other | (981) | (676) | (817)
Proceeds from exercise of stock options | 629 | 353 | 5,743
Payments related to tax withholding for share-based compensation | (2,856) | (3,193) | (2,031)
Net cash provided by (used in) financing activities | (311,313) | 96,508 | (41,878)
Increase (decrease) in cash and cash equivalents | (45,525) | 55,601 | 16,937
Cash and cash equivalents, beginning of year | 80,338 | 24,737 | 7,800
Cash and cash equivalents, end of year | 34,813 | 80,338 | 24,737
Cash paid (received) during the period: |  |  |
Interest paid | 40,878 | 48,721 | 55,766
Income taxes paid (refunded), net | (116,648) | (35,571) | 2,926
Operating cash outflow from operating leases | 44,089 | 43,639 | 39,376
Non-cash investing activity: |  |  |
Capital expenditures included in accounts payable | 18,633 | (13,280) | 13,875
Right-of-use assets obtained in exchange for lease obligations | $ 33,842 | $ 46,511 | $ 21,195

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