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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019
Cash flows from operating activities: |  |  |
Net income (loss) | $ 2,858 | $ (87,652) | $ (38,889)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |
Depreciation and amortization | 133,512 | 119,058 | 90,793
Stock-based compensation expense | 15,581 | 8,096 | 7,729
Deferred tax provision (benefit) | 4,158 | (16,607) | (6,783)
Gain on sale of assets, net | (412) | (348) | (8,567)
(Gain) loss on sale of ownership interests in subsidiaries |  | (11,208) | 6,469
Losses from equity-method investments | 0 | 3,498 | 2,050
Realized loss on cost-method investments | 0 | 0 | 4,731
Other investment gains | (1,364) | (2,066) | (305)
Goodwill write-downs | 0 | 90,408 | 77,572
Changes in working capital items | 12,982 | 46,367 | (12,482)
Decrease in other assets | 15,115 | 16,392 | 4,677
(Decrease) increase in other liabilities | (16,346) | 4,886 | 7,540
Other operating activities, net | (3,273) | 9,623 | (3,452)
Net cash provided by operating activities | 162,811 | 180,447 | 131,083
Cash flows from investing activities: |  |  |
Capital expenditures | (34,313) | (34,849) | (37,688)
Acquisitions, net of cash acquired | (15,623) | (1,000) | (11,504)
Proceeds from sale of assets | 2,776 | 624 | 13,253
Proceeds from sale of investments | 34,167 | 0 | 0
Proceeds from sale of ownership interests in subsidiaries |  | 42,210 | 8,254
Investments and advances | 0 | (9,703) | (33,074)
Net cash used in investing activities | (12,993) | (2,718) | (60,759)
Cash flows from financing activities: |  |  |
Proceeds from long-term debt | 625,628 | 1,154,809 | 503,693
Payments on long-term debt | (702,395) | (1,281,092) | (519,731)
Purchases of treasury stock | (11,858) | (4,428) | (26,127)
Dividends | (27,704) | (26,437) | (25,620)
Acquisition holdback and contingent consideration payments | (1,781) | (10,215) | (4,421)
Transactions with noncontrolling interests | (1,760) | 0 | 0
Other financing activities | (2,982) | (4,889) | (2,836)
Net cash used in financing activities | (122,852) | (172,252) | (75,042)
Effect of exchange rate changes on cash | 43 | 555 | (1,552)
Net change in cash, cash equivalents and restricted cash | 27,009 | 6,032 | (6,270)
Cash, cash equivalents and restricted cash at beginning of year | 41,334 | 35,302 | 41,572
Cash, cash equivalents and restricted cash at end of year | 68,343 | 41,334 | 35,302
Cash paid during the year for: |  |  |
Interest | 28,824 | 35,269 | 41,453
Income taxes | 9,166 | 20,734 | 15,467
Non-cash investing and financing activities: |  |  |
Contribution of treasury stock to the Company's principal defined benefit retirement plan ("DB Plan") | $ 0 | $ 14,983 | $ 0

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