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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Cash flows from operating activities: |  |
Net loss | $ (22,469) | $ (26,412)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 1,062 | 781
Operating lease right-of-use amortization | 714 | 766
Finance lease right-of-use amortization | 14 | 18
Stock-based compensation | 43 | 17
Provision for credit losses | 1,095 | 549
Loss on valuation of convertible promissory notes | 1,428 | 450
Loss on redemption of convertible promissory notes |  | 40
Changes in operating assets and liabilities: |  |
Accounts receivable | (1,562) | 858
Inventory | 1,994 | (1,772)
Contract assets | (2,553) | (225)
Prepaid expenses and other current assets | (233) | 1,150
Other assets | 112 | 4
Accounts payable | 296 | 6,145
Contract liabilities | (603) | (116)
Accrued and other current liabilities | 11,471 | 1,772
Net defined benefit liabilities | 784 | (699)
Income taxes payable | 255 | 57
Lease liabilities | (707) | (791)
Other liabilities | 32 | (661)
Net cash used in operating activities | (8,827) | (18,087)
Cash flows from investing activities: |  |
Purchase of property and equipment | (331) | (623)
Purchase of intangibles |  | (280)
Net cash used in investing activities | (331) | (903)
Cash flows from financing activities: |  |
Proceeds from bank borrowings | 8,147 | 13,414
Proceeds from exercise of stock options | 23 | 51
Proceeds from issuance of convertible promissory note | 2,000 | 9,000
Repayment of bank borrowings | (1,504) | (1,988)
Repayment of convertible promissory note | (500) | (1,180)
Payments of finance lease liabilities | (17) | (24)
Net cash provided by financing activities | 8,149 | 19,273
Effect of exchange rate changes on cash and cash equivalents | (131) | (136)
Net increase (decrease) in cash and cash equivalents | (1,140) | 147
Cash and cash equivalents at beginning of year | 1,398 | 1,251
Cash and cash equivalents cash at end of year | 258 | 1,398
Supplemental disclosures of cash flow information: |  |
Cash paid for interest | 2,259 | 4,175
Cash paid for income taxes | 116 | 333
Noncash financing activities: |  |
Accretion of Series G redeemable convertible preferred stock to redemption amount |  | 2,237
Issuance of common stock from conversion of convertible promissory notes and accrued interest | 72 | 35,830
Issuance of common stock from cashless warrant exercise | $ 1,499 |
Conversion of redeemable convertible preferred stock to common stock |  | $ 384,525

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