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Consolidated Statements of Cash Flows - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Cash flows from operating activities: |  |
Net income (loss) | $ 485,000 | $ (3,816,000)
Less: loss on discontinued operations (Note 8) | (433,000) | (605,000)
Income (loss) income from continuing operations | 918,000 | (3,211,000)
Adjustments to reconcile net income (loss) income from continuing operations to cash provided by operating activities: |  |
Depreciation and amortization | 2,568,000 | 2,109,000
Amortization of debt issuance costs | 93,000 | 60,000
Deferred tax benefit | (66,000) | (390,000)
Provision for (recovery of) credit losses on accounts receivable | 45,000 | (20,000)
Loss on disposal of property and equipment | 77,000 | 18,000
Issuance of common stock for services | 477,000 | 481,000
Stock-based compensation | 548,000 | 408,000
Changes in operating assets and liabilities of continuing operations: |  |
Accounts receivable | (403,000) | 2,028,000
Unbilled receivables | (2,370,000) | 2,933,000
Prepaid expenses, inventories and other assets | 4,193,000 | 2,018,000
Accounts payable, accrued expenses and unearned revenue | 665,000 | (6,270,000)
Cash provided by continuing operations | 6,745,000 | 164,000
Cash used in discontinued operations | (597,000) | (717,000)
Cash provided by (used in) operating activities | 6,148,000 | (553,000)
Cash flows from investing activities: |  |
Purchases of property and equipment (net of financed amount) | (1,714,000) | (1,023,000)
Proceeds from sale of property and equipment |  | 26,000
Cash used in investing activities of continuing operations | (1,714,000) | (997,000)
Cash flows from financing activities: |  |
Borrowing on revolving credit | 90,256,000 | 73,322,000
Repayments of revolving credit borrowings | (90,256,000) | (73,322,000)
Proceeds from long term debt (Term Loan 2/Capital Line) (Note 9) | 2,500,000 | 524,000
Principal repayment of finance lease liabilities | (189,000) | (860,000)
Principal repayments of long term debt | (709,000) | (502,000)
Payment of debt issuance costs | (175,000) | (35,000)
Offering costs paid from sale of Common Stock in 2021 |  | (61,000)
Proceeds from issuance of Common Stock upon exercise of options/warrant | 269,000 | 13,000
Cash provided by (used in) financing activities of continuing operations | 1,696,000 | (921,000)
Effect of exchange rate changes on cash | 8,000 | (4,000)
Increase (decrease) in cash and finite risk sinking fund (restricted cash) (Note 2) | 6,138,000 | (2,475,000)
Cash and finite risk sinking fund (restricted cash) at beginning of period (Note 2) | 13,436,000 | 15,911,000
Cash and finite risk sinking fund (restricted cash) at end of period (Note 2) | 19,574,000 | 13,436,000
Supplemental disclosure: |  |
Interest paid | 308,000 | 173,000
Income taxes paid |  | 6,000
Non-cash investing and financing activities: |  |
Equipment purchase subject to financing | $ 784,000 | $ 114,000

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Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration