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v3.8.0.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Cash flows from operating activities: |  |  |
Net loss (including noncontrolling interests) | $ (5,495) | $ (5,649) | $ (7,835)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Stock-based compensation expense | 72 | 255 | 1,075
Depreciation and amortization | 953 | 360 | 187
Loss on disposal of property and equipment |  | 91 | 28
Changes in operating assets and liabilities: |  |  |
Accounts receivable | 542 | (204) | (239)
Projects in process | (1) | 158 | 38
Inventory | (372) | (737) |
Prepaid expenses and other current assets | 293 | (1,316) | (263)
Accounts payable and accrued expenses | (896) | 343 | 871
Deferred revenues | (677) | 447 | (1,925)
Net cash used in operating activities | (5,581) | (6,252) | (8,063)
Cash flows from investing activities: |  |  |
Purchase of property and equipment | (656) | (987) | (198)
Investment in joint venture |  | (3) |
Proceeds from sale of property and equipment |  | 5 |
Net cash used in investing activities | (656) | (985) | (198)
Cash flow from financing activities: |  |  |
Proceeds from issuance of common stock and warrants, net of offering costs | 9,079 | 7,913 | 5,422
Contributions from noncontrolling interests |  |  | 3
Proceeds from note payable | 1,713 |  |
Payments on note payable | (1,713) |  |
Principal payments on capital lease obligations | (438) | (116) | (57)
Net cash provided by financing activities | 8,641 | 7,797 | 5,368
Effect of exchange rate changes on cash | (84) | (166) | (154)
Net change in cash | 2,320 | 394 | (3,047)
Cash at beginning of year | 3,476 | 3,082 | 6,129
Cash at end of year | 5,796 | 3,476 | 3,082
Supplemental disclosure of cash flow information: |  |  |
Cash paid for interest | 73 | 48 | 18
Cash paid for income taxes | 219 | 367 | 93
Supplemental disclosure of non-cash investing and financing activities: |  |  |
Purchase of equipment with capital lease obligation | $ 1,287 | $ 983 |

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