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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
Operating activities: |  |
Net loss | $ (942) | $ (1,710)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
(Gain) loss on asset and equity security sales | (578) | (26)
Gain on derivative instruments | (271) | (672)
Employee stock option expense | 50 | 970
Depreciation and amortization | 13 | 5
Property abandonment and impairment |  | 13
Deferred income taxes |  | (353)
Gain on warrant liability |  | (4)
Changes in operating assets and liabilities: |  |
Prepaid expenses and other current assets | 52 | (7)
Accounts payable and other current liabilities | 18 | (51)
Net cash (used in) operating activities | (1,658) | (1,835)
Investing activities: |  |
Sale (purchase) of short-term investments - net | 3,563 | (15,272)
Loan to Zazu | (1,500) |
Purchase of Zazu, net of cash acquired | (417) |
Purchase of marketable equity securities | (578) | (304)
Proceeds from sale of marketable equity securities | 666 | 56
Sale of derivative instrument, net | 53 | 45
Additions to other assets | (2) | (1)
Purchase of mineral property |  | (40)
Net cash provided by (used in) investing activities | 1,785 | (15,516)
Financing activities: |  |
Repurchase of Solitario common stock for cancellation | (32) | (248)
Net (decrease) increase in cash and cash equivalents | 95 | (17,599)
Cash and cash equivalents, beginning of year | 119 | 17,718
Cash and cash equivalents, end of year | 214 | 119
Supplemental disclosure of non-cash activities: |  |
Additions to mining equipment –Zazu through issuance of stock in Acquisition | (100) |
Additions to mineral property- Zazu through issuance of stock in Acquisition | (15,611) |
Additions to current assets, net – Zazu through issuance of stock in Acquisition | (42) |
Issuance of common stock – Zazu acquisition | 13,654 |
Convertible debenture – due from Zazu cancelled | 1,510 |
Asset retirement obligation - Lik | 125 |
Issuance of replacement options – Zazu | 164 |
Transfer of warrant value to marketable equity securities on exercise of Vendetta Warrants | $ 949 |

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