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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 | $ (5,853) | $ (12,178)
Adjustments to reconcile net loss to net cash flows used in operating activities: |  |
Depreciation and amortization | 1,225 | 1,219
Amortization of operating lease right-of-use asset | 209 | 187
Amortization of finance lease right-of-use asset | 83 | 114
Amortization of deferred financing costs, debt discounts and debt premiums | 3 | 4
Gain on settlement of liability |  | (25)
Gain on dissolution of joint venture | (65) |
Gain on write-off of liabilities | (1,720) |
Stock-based compensation | 1,558 | 3,801
Value of stock issued in payment of services | 177 |
Provision for losses on doubtful accounts | 218 | 406
Warrant revaluation |  | (606)
Changes in operating assets and liabilities: |  |
Accounts receivable | (483) | (745)
Inventories | 324 | (144)
Other assets | 451 | 491
Accounts payable | (169) | 165
Operating lease liabilities | (206) | (182)
Deferred revenue | (9) | 101
Accrued expenses | 698 | (329)
Net cash used in operating activities | (3,559) | (7,721)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchase of property and equipment | (126) | (277)
Net cash used in investing activities | (126) | (277)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Principal payments on finance lease obligations | (80) | (151)
Issuance of common stock, net of issuance costs | 2,245 | 129
Proceeds from exercise of warrants |  | 11
Principal payments on long-term debt | (423) | (214)
Net cash flows provided by (used in) financing activities | 1,742 | (225)
NET CHANGE IN CASH | (1,943) | (8,223)
CASH AT BEGINNING OF PERIOD | 3,445 | 11,668
CASH AT END OF PERIOD | 1,502 | 3,445
SUPPLEMENTAL CASH FLOW INFORMATION |  |
Cash paid during the period for interest | 42 | 45
SUPPLEMENTAL DISCLOSURE OF CONSULTING SERVICES OR ANY OTHER NON-CASH COMMON STOCK RELATED ACTIVITY |  |
Purchases of equipment financed through accounts payable | 11 | 34
Prepaid insurance financed with loan | 372 | 413
Operating lease right-of-use assets obtained in exchange for operating lease obligations | $ 58 | 92
Finance lease right-of-use assets obtained in exchange for finance lease obligations |  | $ 12

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