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v3.19.2

Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018 | Dec. 31, 2017
Cash flows from operating activities: |  |  |  |
Net (loss) income | $ (13,853) | $ 527 | $ (19,222) | $ (45,117)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |  |
Stock option compensation expense | 129 | (40) | (40) | 50
Restricted stock compensation expense |  |  | 98 | 79
Restricted stock compensation expense | 4 | (81) |  |
Depreciation expense | 122 | 236 | 444 | 310
Amortization of right of use assets | 552 | 0 |  |
Loss on disposal of equipment |  |  | 0 | 18
Warrant liability fair value adjustment | (17) | (17,209) | (19,706) | (15,103)
Gain on warrant extinguishment |  |  | 0 | (9,613)
Non-cash interest income | 0 | (1) | (1) | (1)
Interest expense accrued related to convertible notes | 329 | 0 | 402 | 0
Debt discount amortization | 3,444 | 238 |  |
Debt discount and deferred finance costs amortization |  |  | 7,572 | 21,544
Loss on issuance of financial instrument | 6 | 2,826 | 2,826 | 0
Loss on debt settlements and extinguishments |  |  | 1,123 | 29,924
Changes in assets and liabilities: |  |  |  |
Prepaid expenses and other assets | 232 | 318 | (218) | 7
Accounts receivable | 404 | (163) | (293) | 108
Inventories | 143 | 43 | 385 | (543)
Accounts payable and accrued expenses | 3,827 | 3,985 | 8,163 | 3,180
Deferred revenue | (240) | 0 | 3,503 | (32)
Other non-current liabilities | (504) | 44 | 232 | (209)
Principal payments on leases | (540) | 0 |  |
Net cash used in operating activities | (5,962) | (9,277) | (14,732) | (15,398)
Cash flows from investing activities: |  |  |  |
Purchase of property, plant and equipment | (2) | (39) | (76) | (524)
Net cash (used in) provided by investing activities | (2) | (39) | (76) | (524)
Cash flows from financing activities: |  |  |  |
Expenses from the release of restricted cash |  |  | 0 | (1,212)
Cash paid pursuant to Exchange Agreement |  |  | 0 | (804)
Net proceeds from the issuance of debt | 3,719 | 0 |  |
Net proceeds from sale of common stock and warrants | 0 | 4,210 |  |
Net proceeds from convertible note debt financing | 0 | 2,172 | 5,664 | 0
Net proceeds from sale of stock |  |  | 10,917 | 15
Net proceeds from exercise of warrants |  |  | 520 | 0
Repayment of convertible note debt |  |  | (4,870) | 0
Net cash provided by (used in) financing activities | 3,869 | 6,382 | 13,236 | (10,517)
Foreign currency effects on cash, cash equivalents and restricted cash | (69) | (45) | (174) | 67
Net decrease in cash, cash equivalents and restricted cash | (2,164) | (2,979) | (1,746) | (26,372)
Cash, cash equivalents and restricted cash: |  |  |  |
Beginning of period | 3,578 | 5,324 | 5,324 | 31,696
End of period | 1,414 | 2,345 | 3,578 | 5,324
Supplemental non-cash activities: |  |  |  |
Conversion of convertible notes |  |  | 0 | 40,121
Fair value of warrants issued | 0 | 23,532 | 28,539 | 16,953
Cashless exercise of warrants |  |  | 0 | 2,537
Deemed dividend |  |  | 0 | 527
Fair value of warrants exercised for cash |  |  | 0 | 19
Series B and Series C Preferred Shares [Member] |  |  |  |
Cash flows from financing activities: |  |  |  |
Net proceeds from sale of preferred shares |  |  | 0 | 2,310
Series A and Series B Preferred Shares [Member] |  |  |  |
Cash flows from financing activities: |  |  |  |
Cash paid to redeem preferred shares |  |  | 0 | (2,360)
Series C Preferred Shares [Member] |  |  |  |
Cash flows from financing activities: |  |  |  |
Cash paid to redeem preferred shares |  |  | 0 | (590)
Series D Preferred Shares [Member] |  |  |  |
Cash flows from financing activities: |  |  |  |
Net proceeds from sale of preferred shares | $ 150 | $ 0 | 1,005 | 0
Series C Warrants [Member] |  |  |  |
Cash flows from financing activities: |  |  |  |
Cash paid to extinguish of Series C Warrants |  |  | $ 0 | $ (7,876)

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