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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 | $ 21,806 | $ 24,844 | $ 9,990
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 9,269 | 9,390 | 9,879
Impairment of property and equipment | 1,296 | 0 | 1,098
Amortization of intangible assets | 13,161 | 15,129 | 19,683
Net gains from investments | (309) | 0 | (2,472)
Deferred income taxes | (6,652) | (275) | (1,677)
Stock-based compensation | 14,543 | 10,070 | 10,877
Operating lease right-of-use assets, amortization, and impairments | 14,511 | 11,415 | 13,397
Amortization of deferred financing fees | 443 | 920 | 981
Amortization of premium (discount) on investments | (3) | (65) | 0
Foreign currency losses | 239 | 1,439 | 582
Changes in assets and liabilities |  |  |
Accounts receivable | 12,835 | (3,898) | 234
Deferred commissions | 5,070 | (6,010) | (3,299)
Prepaid expenses and other current assets | 4,374 | (1,283) | 423
Accounts payable | (461) | 201 | 109
Accrued expenses and other liabilities | (6,102) | 20,426 | 297
Deferred revenue | (31,656) | 36,007 | (925)
Operating lease liabilities | (12,939) | (11,373) | (10,577)
Net cash provided by operating activities | 39,425 | 107,067 | 47,754
Cash flows from investing activities: |  |  |
Purchases of property and equipment | (5,663) | (10,745) | (8,905)
Purchases of marketable investments | (28,683) | (21,607) | 0
Proceeds from maturities of marketable investments | 27,331 | 2,000 | 0
Proceeds from sales of marketable investments | 0 | 1,000 | 0
Other investing activity | 201 | 56 | 4,335
Net cash used in investing activities | (6,814) | (29,296) | (4,570)
Cash flows from financing activities: |  |  |
Payments on borrowings | (25,000) | (34,375) | (23,375)
Payment of debt issuance costs | 0 | (494) | 0
Deferred acquisition payments | 0 | 0 | (3,112)
Repurchases of common stock | (15,112) | (20,066) | 0
Proceeds from issuance of common stock under employee equity incentive plans | 4,352 | 9,165 | 5,706
Taxes paid for net share settlements of stock-based compensation awards | (3,111) | (3,373) | (2,906)
Net cash used in financing activities | (38,871) | (49,143) | (23,687)
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (6,117) | (1,249) | 1,963
Net increase (decrease) in cash, cash equivalents and restricted cash | (12,377) | 27,379 | 21,460
Cash, cash equivalents and restricted cash, beginning of year | 118,031 | 90,652 | 69,192
Cash, cash equivalents and restricted cash, end of year | 105,654 | 118,031 | 90,652
Supplemental disclosure of cash flow information: |  |  |
Cash paid for interest | 2,015 | 3,279 | 4,373
Cash paid for income taxes | $ 8,901 | $ 9,815 | $ 3,194

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