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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash flows from operating activities |  |  |
Net income (loss) | $ (26,413) | $ 18,306 | $ 10,541
Adjustments required to reconcile net income to net cash provided by (used in) operating activities: |  |  |
Depreciation and amortization | 2,497 | 2,415 | 2,437
Impairment of intangible assets | 5,264 | 0 | 0
Impairment of goodwill | 25,561 | 0 | 0
Write-down of obsolete inventory | 6,433 | 3,002 | 5,246
Changes in marketable securities | (140) | (20) | 621
Share-based compensation expense | 3,353 | 3,577 | 2,862
Deferred taxes, net | (1,885) | 1,178 | 48
Changes in assets and liabilities: |  |  |
Accounts receivable - trade | 2,239 | 3,695 | (9,472)
Accounts receivable - other | (138) | 396 | 1,217
Change in liability for employees' severance benefits, net | (395) | 149 | 138
Inventories | 29,909 | (15,289) | (33,526)
Trade accounts payable | (11,508) | (12,410) | 15,031
Other accounts payable and accrued expenses | (2,852) | (9,089) | 5,936
Net cash provided by (used in) operating activities | 31,925 | (4,090) | 1,079
Cash flows from investing activities |  |  |
Proceeds from short term bank deposits | 0 | 0 | 5,000
Purchase of property, plant and equipment | (1,122) | (2,089) | (2,586)
Investment in intangible assets | (1,092) | (2,603) | (3,572)
Proceeds from maturity of marketable securities | 4,000 | 16,029 | 37,850
Purchases of marketable securities | (9,623) | (3,998) | (19,927)
Other | 320 | 934 | 0
Net cash provided by (used in) investing activities | (7,517) | 8,273 | 16,765
Cash flows from financing activities |  |  |
Exercise of options and RSUs | 762 | 0 | 0
Purchase of treasury shares | (9,320) | (3,428) | (14,291)
Proceeds from reissuance of treasury shares upon exercise of options | 585 | 2,377 | 4,514
Net cash used in financing activities | (7,973) | (1,051) | (9,777)
Effect of exchange rate changes on cash balances held | (197) | (1,683) | 542
Increase in cash and cash equivalents | 16,238 | 1,449 | 8,609
Cash and cash equivalents at beginning of year | 30,734 | 29,285 | 20,676
Cash and cash equivalents at end of year | 46,972 | 30,734 | 29,285
Supplementary cash flow information Non-cash transactions: |  |  |
Additions of right of use assets and lease liabilities | 388 | 1,433 | 451
Termination of lease agreements | (620) | 0 | 0
Investments in property, plant and equipment | 54 | 37 | 59
Non-cash Transactions Including Investments and right of use assets and lease liabilities | (178) | 1,470 | 510
Cash paid (received) during the year for: |  |  |
Income taxes | $ 601 | $ (411) | $ 2,371

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