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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES |  |
Net (loss) income | $ (2,438,000) | $ 217,000
Adjustments to reconcile net (loss) income to net cash provided by operating activities: |  |
Depreciation and amortization | 419,000 | 464,000
Amortization of intangible assets | 404,000 | 40,000
Amortization of operating lease right-of-use assets | 124,000 | 148,000
Provision for bad debt expense | 10,000 | 19,000
Amortization of debt issuance costs and discount | 193,000 | 96,000
Gain on forgiveness of PPP loan |  | (1,967,000)
Investment (gain) loss from investment in Eton | (139,000) | 2,835,000
Equity in losses of unconsolidated entities | 2,886,000 | 1,319,000
Stock-based compensation | 2,016,000 | 855,000
Changes in assets and liabilities: |  |
Accounts receivable | (1,535,000) | (610,000)
Inventories | (179,000) | (534,000)
Prepaid expenses and other current assets | (29,000) | (32,000)
Accounts payable and accrued expenses | 369,000 | 1,105,000
Accrued payroll and related liabilities | (1,141,000) | (684,000)
Deferred revenue and customer deposits | 7,000 | (63,000)
NET CASH PROVIDED BY OPERATING ACTIVITIES | 967,000 | 3,208,000
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Investment in patent and trademark assets | (6,000) | (13,000)
Purchases of property, plant and equipment and capitalized software development costs | (404,000) | (211,000)
NET CASH USED IN INVESTING ACTIVITIES | (410,000) | (224,000)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Payments on finance lease obligations | (3,000) | (1,000)
Principal payment on SWK loan |  | (750,000)
Proceeds from the exercise of stock options | 4,000 |
Payment of taxes upon vesting of RSUs and exercise of stock options | (777,000) | (30,000)
NET CASH USED IN FINANCING ACTIVITIES | (776,000) | (781,000)
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH | (219,000) | 2,203,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, beginning of period | 42,167,000 | 4,301,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, end of period | 41,948,000 | 6,504,000
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH |  |
Cash and cash equivalents | 41,948,000 | 6,304,000
Restricted cash |  | 200,000
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD | 41,948,000 | 6,504,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |
Cash paid for income taxes |  |
Cash paid for interest | 1,617,000 | 415,000
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES: |  |
Right-of-use assets obtained in exchange for new operating lease obligations | $ 1,036,000 |

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