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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 loss | $ (3,851) | $ (5,002) | $ (5,828)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities: |  |  |
Depreciation | 230 | 206 | 372
Lease amortization | 1,200 | 994 | 1,429
Net gain on disposal of assets | (25) | (2) | (33)
Gain on liquidation of a subsidiary |  |  | (6)
Reversal of guarantee obligations (ASC 460) reserve upon expiration of statute of limitations | (21) | (21) | (42)
Stock-based compensation expense | 293 | 603 | 504
Recovery of credit losses | (1,315) | (3,465) | (9,158)
Allowance for inventory | 133 | 682 | 4,573
Deferred income taxes | 275 | 1,135 | 2,052
Changes in operating assets and liabilities |  |  |
Accounts receivable | 4,802 | 19,043 | 31,336
Inventories and deferred costs | 303 | (448) | 578
Prepaid and other assets | (854) | 1,693 | (4,595)
Accounts payable | (5,015) | (6,057) | (6,089)
Income taxes payable | 181 | (417) | 2,832
Customer advances | 103 | (108) | (160)
Deferred revenue |  | (6) | (329)
Other liabilities | (917) | (1,553) | 2,393
Net cash provided by (used in) operating activities | (4,478) | 7,277 | 19,829
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |
Purchase of property, plant and equipment | (255) | (250) | (348)
Proceeds from sale of short-term investments |  |  | 2,100
Net cash provided by (used in) investing activities | (255) | (250) | 1,752
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |
Proceeds from exercise of stock options | 4 | 20 |
Repurchase of ordinary shares |  | (13) |
Net cash provided by financing activities | 4 | 7 |
Effect of exchange rate changes on cash and cash equivalents | (2,483) | (6,451) | (3,693)
Net increase (decrease) in cash and cash equivalents | (7,212) | 583 | 17,888
Cash, cash equivalents and restricted cash at beginning of year | 66,859 | 66,276 | 48,388
Cash, cash equivalents and restricted cash at end of year | 59,647 | 66,859 | 66,276
Cash paid: |  |  |
Income taxes paid | $ 963 | $ 1,342 | $ 800

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