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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net loss | $ (6,778) | $ (9,895)
Adjustments to reconcile net loss to net cash flows used in operating activities: |  |
Depreciation and amortization | 931 | 910
Amortization of operating lease right-of-use asset | 153 | 139
Amortization of finance lease right-of-use asset | 63 | 99
Amortization of deferred financing costs, debt discounts and debt premiums | 2 | 3
Gain on settlement of liability |  | (4)
Stock-based compensation | 1,168 | 3,405
Provision for losses on doubtful accounts | 175 | 245
Warrant revaluation |  | (578)
Changes in operating assets and liabilities: |  |
Accounts receivable | (622) | (503)
Inventories | 72 | (99)
Other assets | 306 | 341
Accounts payable | 468 | 235
Operating lease liabilities | (150) | (136)
Deferred revenue | (90) | (5)
Accrued expenses | 629 | (378)
Net cash used in operating activities | (3,673) | (6,221)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchase of property and equipment | (77) | (225)
Net cash used in investing activities | (77) | (225)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Principal payments on finance lease obligations | (62) | (124)
Issuance of common stock, net of issuance costs | 2,245 | 129
Proceeds from exercise of warrants |  | 11
Principal payments on long-term debt | (316) | (94)
Net cash flows provided by (used in) financing activities | 1,867 | (78)
NET CHANGE IN CASH | (1,883) | (6,524)
CASH AT BEGINNING OF PERIOD | 3,445 | 11,668
CASH AT END OF PERIOD | 1,562 | 5,144
SUPPLEMENTAL CASH FLOW INFORMATION |  |
Cash paid during the period for interest | 29 | 32
SUPPLEMENTAL DISCLOSURE OF CONSULTING SERVICES OR ANY OTHER NON-CASH COMMON STOCK RELATED ACTIVITY |  |
Purchases of equipment financed through accounts payable | 3 | 34
Prepaid insurance financed with loan | 372 | 413
Operating lease right-of-use assets obtained in exchange for operating lease obligations | $ 58 | $ 92

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