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v3.22.0.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Cash flows from operating activities: |  |
Net loss (including noncontrolling interests) | $ (7,268) | $ (6,282)
Bad debt expense | 157 | 77
Depreciation and amortization | 632 | 767
Amortization of operating lease right-of-use assets | 505 | 405
Loss on disposal of property and equipment |  | 5
Changes in operating assets and liabilities: |  |
Accounts receivable and unbilled revenue, net | 434 | (394)
Projects in process |  | 8
Inventory | (1,440) | (91)
Prepaid expenses and other current assets | 247 | (375)
Accounts payable and accrued expenses | (406) | 444
Deferred revenues | (28) | 64
Operating lease obligations | (511) | (380)
Net cash used in operating activities | (7,678) | (5,752)
Cash flows from investing activities: |  |
Purchase of property and equipment | (67) | (60)
Sale of investment in joint venture |  | 2
Net cash used in investing activities | (67) | (58)
Cash flow from financing activities: |  |
Proceeds from issuance of preferred and common stock, net of offering costs | 15,062 | 13,530
Preferred dividends |  | (33)
Proceeds from short-term borrowings |  | 966
Proceeds from short-term tax credits |  | 542
Payments on short-term borrowings |  | (516)
Payments on short-term tax credits |  | (557)
Principal payments on finance lease obligations | (487) | (321)
Net cash provided by financing activities | 14,575 | 13,611
Effect of exchange rate changes on cash | 80 | 315
Net change in cash | 6,910 | 8,116
Cash at beginning of year | 10,473 | 2,357
Cash at end of year | 17,383 | 10,473
Supplemental disclosure of cash flow information: |  |
Cash paid for interest | 15 | 27
Cash paid for income taxes | 146 | 59
Supplemental disclosure of non-cash investing and financing activities: |  |
Short-term borrowings and accrued interest settled for Series C-2 Preferred Stock |  | 516
Right-of-use asset obtained in exchange for lease obligations | $ 239 | $ 864

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