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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) |  | $ 136,139 | $ (280,484) | $ 155,293
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |  |  |
Net realized and unrealized (gains) losses |  | (29,861) | 48,042 | 29,792
Change in fair value of contingent consideration |  | 40,100 | 0 | 0
Stock-based compensation |  | 74,758 | 63,863 | 45,811
Depreciation and amortization |  | 272,641 | 261,926 | 237,129
Loss on sale of subsidiary |  | 0 | 46,362 | 0
Amortization of premiums on investment securities |  | 1,324 | 0 | 0
Gain on sale of equity investment |  | (3,617) | 0 | 0
Loss on disposal of property, equipment and capitalized software |  | 4,378 | 0 | 0
Debt restructuring and debt issuance cost amortization |  | 15,521 | 26,196 | 9,942
Provision (benefit) for deferred taxes |  | 12,878 | (29,342) | 19,667
Provision for credit losses |  | 45,114 | 78,443 | 65,664
Impairment charges |  | 0 | 53,378 | 0
Non-cash adjustments related to tax receivable agreement |  | 0 | (491) | (932)
Changes in operating assets and liabilities, net of effects of acquisitions: |  |  |  |
Accounts receivable and securitized accounts receivable |  | (959,128) | 592,947 | (67,645)
Prepaid expenses and other current and other long-term assets |  | 29,830 | 6,514 | 31,337
Accounts payable |  | 252,967 | (183,708) | 139,187
Accrued expenses and restricted cash payable |  | 299,866 | 151,236 | 31,627
Income taxes |  | 4,141 | 15,083 | (12,266)
Other current and other long-term liabilities |  | (46,653) | 7,054 | (21,435)
Net cash provided by operating activities |  | 150,398 | 857,019 | 663,171
Cash flows from investing activities |  |  |  |
Purchases of property, equipment and capitalized software |  | (86,041) | (80,471) | (102,860)
Cash paid on sale of subsidiary |  | 0 | (22,470) | 0
Proceeds from sale or distribution of equity investment |  | 3,117 | 837 | 0
Purchases of equity securities |  | (318) | (6,459) | (5,567)
Maturities of equity securities |  | 0 | 181 | 230
Purchases of available-for-sale debt securities |  | (994,035) | 0 | 0
Maturities of available-for-sale debt securities |  | 34,955 | 0 | 0
Acquisitions, net of cash and restricted cash acquired |  | (558,784) | (220,704) | (882,417)
Net cash used for investing activities |  | (1,601,106) | (329,086) | (990,614)
Cash flows from financing activities |  |  |  |
Repurchase of share-based awards to satisfy tax withholdings |  | (23,457) | (9,519) | (10,352)
Proceeds from stock option exercises |  | 44,197 | 9,273 | 4,941
Net change in deposits |  | 1,620,284 | (396,065) | 176,603
Net activity on other debt |  | (18,500) | (66,915) | (43,148)
Borrowings on revolving credit facility |  | 1,647,000 | 300,000 | 1,267,704
Repayments on revolving credit facility |  | (1,527,200) | (300,000) | (1,265,251)
Borrowings on term loans |  | 112,819 | 0 | 688,990
Repayments on term loans |  | (63,659) | (64,611) | (64,329)
Repayments on term loans |  | (400,000) | 0 | 0
Proceeds from issuance of Convertible Notes |  | 0 | 299,150 | 0
Proceeds from issuance of common stock |  | 0 | 90,000 | 0
Issuance costs |  | (8,935) | (17,048) | (3,442)
Net change in securitized debt |  | 20,720 | (23,521) | (1,943)
Net cash provided by (used for) financing activities |  | 1,403,269 | (179,256) | 749,773
Effect of exchange rates on cash, cash equivalents and restricted cash |  | (25,376) | (405) | 4,020
Net change in cash, cash equivalents and restricted cash |  | (72,815) | 348,272 | 426,350
Cash, cash equivalents and restricted cash at beginning of year | [1] | 1,329,653 | 981,381 | 555,031
Cash, cash equivalents and restricted cash at end of year | [1] | 1,256,838 | 1,329,653 | 981,381
Supplemental cash flow information |  |  |  |
Interest paid |  | 132,160 | 163,292 | 175,993
Income taxes paid (refunded) |  | 50,621 | (8,444) | 50,964
Supplemental disclosure of non-cash investing and financing activities |  |  |  |
Capital expenditures incurred but not paid |  | 5,143 | 3,179 | 4,771
Non-cash contribution from non-controlling interest |  | 12,457 | 0 | 0
Deferred cash consideration as part of asset acquisition |  | 47,408 | 0 | 0
Contingent consideration as part of asset acquisition |  | 27,200 | 0 | 0
Promissory note received in exchange for sale of equity investment |  | 500 | 0 | 0
Reconciliation of cash, cash equivalents and restricted cash |  |  |  |
Cash and cash equivalents at beginning of year |  | 852,033 | 810,932 | 541,498
Restricted cash at beginning of year |  | 477,620 | 170,449 | 13,533
Cash, cash equivalents and restricted cash at beginning of year | [1] | 1,329,653 | 981,381 | 555,031
Cash and cash equivalents at end of year |  | 588,923 | 852,033 | 810,932
Restricted cash at end of year |  | 667,915 | 477,620 | 170,449
Cash, cash equivalents and restricted cash at end of year | [1] | $ 1,256,838 | $ 1,329,653 | $ 981,381
[1] | The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within our consolidated balance sheets to amounts within our consolidated statements of cash flows for the years ended December 31, 2021, 2020 and 2019:
| December 31,
| 2021 |  | 2020 |  | 2019
Cash and cash equivalents at beginning of year | $ | 852,033 |  |  | $ | 810,932 |  |  | $ | 541,498 |
Restricted cash at beginning of year | 477,620 |  |  | 170,449 |  |  | 13,533 |
Cash, cash equivalents and restricted cash at beginning of year | $ | 1,329,653 |  |  | $ | 981,381 |  |  | $ | 555,031 |
Cash and cash equivalents at end of year | $ | 588,923 |  |  | $ | 852,033 |  |  | $ | 810,932 |
Restricted cash at end of year | 667,915 |  |  | 477,620 |  |  | 170,449 |
Cash, cash equivalents and restricted cash at end of year | $ | 1,256,838 |  |  | $ | 1,329,653 |  |  | $ | 981,381 |

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