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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 | $ (3,163) | $ (20,724)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization | 259 | 1,818
Bad debt (recovery) expense | (55) | 114
Non-cash lease expense from right-of-use asset | 101 | 290
Stock-based compensation | 473 | 114
Forfeiture of unvested stock options | 0 | (84)
Casualty loss (gain), net of insurance proceeds | 0 | 533
Impairment charges - property and equipment | 2 | 37
Impairment charges - intangible assets | 0 | 5,132
Impairment charges - right of use asset | 0 | 179
Impairment charges - goodwill | 0 | 7,367
Changes in operating assets and liabilities: |  |
Accounts receivable | 313 | 378
Inventory | 399 | 261
Prepaid expenses and other current assets | 319 | 213
Other assets | 24 | 56
Accounts payable | (78) | 142
Accrued expenses and other current liabilities | (335) | 129
Deferred revenue | (354) | (441)
Lease liabilities | (193) | (390)
Net cash used in operating activities | (2,288) | (4,876)
Cash flows from investing activities: |  |
Purchases of property and equipment | 0 | (11)
Proceeds from sale of equipment | 0 | 30
Net cash provided by investing activities | 0 | 19
Cash flows from financing activities: |  |
Proceeds from private placement, net of issuance costs | 5,435 | 0
Net proceeds from exercise of common stock warrants | 534 | 0
Net cash provided by financing activities | 5,969 | 0
Increase (decrease) in cash | 3,681 | (4,857)
Cash at beginning of period | 3,085 | 9,000
Cash at end of period | 6,766 | 4,143
Supplemental disclosures of cash flow information: |  |
Cash paid during the period for interest | 18 | 7
Cash paid for income taxes | 31 | 0
Non-cash investing and financing activities: |  |
Preferred stock dividends | 282 | 0
Warrant modification | 25 | 0
Common stock issued for conversion of Preferred Stock and accrued dividends | 47 | 0
Induced exercise of common stock warrants | 751 | 0
Induced exercise of common stock warrants | $ 0 | $ 11

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