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v3.19.1

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Cash flows from operating activities: |  |
Net loss | $ (26,273) | $ (33,864)
Adjustments to reconcile net loss to net cash used for operating activities: |  |
Depreciation | 258 | 274
Unrealized (gain) loss on warrant derivative liabilities | (1,522) | 2,608
Amortization of deferred loan costs | 103 | 193
Amortization of debt discount | 3,920 | 3,644
Interest expense added to loan principal | 9,767 | 9,269
Interest expense added to lease liability | 1,111 | 964
Loss on debt conversions | 175 | 58
Loss on early extinguishment of debt and debt refinancing |  | 3,501
Compensation charge for stock awards and share options | 473 | 2,304
Changes in operating assets and liabilities: |  |
Accounts receivable | (2) | 3
Prepaid expenses and other current assets | 3 | 2,980
Other assets | 73 | (444)
Accounts payable | (98) | (79)
Accrued liabilities | (181) | (1,877)
Net cash used for operating activities | (12,193) | (10,466)
Cash flows from investing activities: |  |
Additions to long-term deposit | (2,000) |
Additions to property, plant and equipment | (1,726) | (1,006)
Net cash used for investing activities | (3,726) | (1,006)
Cash flows from financing activities: |  |
Net proceeds from issuance of common stock | 15,503 |
Net proceeds from issuance of long-term debt |  | 57,253
Principal payments on long-term debt | (56) | (44,923)
Net cash provided by financing activities | 15,447 | 12,330
Net (decrease) increase in cash and cash equivalents and restricted cash | (472) | 858
Cash and cash equivalents and restricted cash, beginning of period | 13,163 | 12,305
Cash and cash equivalents and restricted cash, end of period | $ 12,691 | $ 13,163

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