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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2022
Cash flows from operating activities: |  |  |
Net income | $ 172,561 | $ 213,054 | $ 330,845
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation and amortization | 77,966 | 68,335 | 63,521
Stock-based compensation expense | 39,970 | 36,285 | 29,210
Impairment of right-of-use assets | 1,629 | 5,471 | 7,392
Impairment of fixed assets | 1,575 | 4,375 | 1,915
Provision for doubtful accounts | 20,715 | 22,493 | 21,552
Gain on cash surrender value of life insurance policies | (8,803) | (10,576) | (5,819)
(Gain) loss on marketable securities | (29,848) | (2,874) | 11,978
Deferred income taxes | (32,309) | (14,403) | (16,963)
Change in other assets and liabilities: |  |  |
Deferred compensation | 65,402 | 52,291 | 27,197
Receivables due from clients | 7,872 | 33,483 | (138,627)
Income taxes and other receivables | 13,669 | (25,615) | 3,969
Prepaid expenses and other assets | (239) | (5,884) | (9,534)
Unearned compensation | 7,923 | 11,904 | (23,425)
Income taxes payable | 2,617 | (15,304) | 12,751
Accounts payable and accrued liabilities | (54,712) | (27,821) | 191,447
Other | (2,027) | (1,320) | (5,751)
Net cash provided by operating activities | 283,961 | 343,894 | 501,658
Cash flows from investing activities: |  |  |
Purchase of property and equipment | (55,147) | (70,382) | (49,406)
Purchase of marketable securities | (45,768) | (53,530) | (82,015)
Proceeds from sales/maturities of marketable securities | 46,000 | 65,878 | 92,472
Proceeds from life insurance policies | 16,272 | 4,376 | 3,382
Premium on company-owned life insurance policies | (15,185) | (15,219) | (15,218)
Cash paid for acquisitions, net of cash acquired | 0 | (254,750) | (133,802)
Dividends received from unconsolidated subsidiaries | 0 | 150 | 255
Net cash used in investing activities | (53,828) | (323,477) | (184,332)
Cash flows from financing activities: |  |  |
Dividends paid to shareholders | (54,391) | (32,971) | (26,786)
Repurchases of common stock | (53,162) | (95,463) | (96,258)
Payments of tax withholdings on restricted stock | (10,732) | (22,232) | (18,532)
Proceeds from issuance of common stock in connection with an employee stock purchase plan | 8,347 | 7,606 | 6,919
Dividends paid to noncontrolling interest | (4,496) | (4,721) | (1,452)
Principal payments on finance leases | (1,776) | (1,639) | (1,157)
Payments on life insurance policy loans | (123) | (2,760) | (178)
Net cash used in financing activities | (116,333) | (152,180) | (137,444)
Effect of exchange rate changes on cash and cash equivalents | (16,819) | (2,283) | (52,590)
Net increase (decrease) in cash and cash equivalents | 96,981 | (134,046) | 127,292
Cash and cash equivalents at beginning of year | 844,024 | 978,070 | 850,778
Cash and cash equivalents at end of the year | 941,005 | 844,024 | 978,070
Supplemental cash flow information: |  |  |
Cash used to pay interest | 24,992 | 25,409 | 24,607
Cash used to pay income taxes, net of refunds | $ 72,124 | $ 134,741 | $ 107,602

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