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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Cash flows from operating activities: |  |  |
Net loss | $ (59,747) | $ (44,870) | $ (10,634)
Adjustments to reconcile net loss from operating activities: |  |  |
Loss from investment in Minera Santa Cruz S.A., net of amortization (note 9) | 8,754 | 11,865 | 44
(Gain) loss on investments (note 5) | (5,259) | 3,324 | (257)
Loss (gain) on disposal of fixed assets | 96 | 77 | (11)
Income and mining tax recovery | (3,844) | (2,770) | (15,675)
Stock-based compensation (note 13) | 694 | 269 | 1,309
Revision of estimates and accretion of asset retirement obligations (note 12) | 3,531 | 3,464 | 2,061
Unrealized foreign exchange loss (gain) and adjustment to estimate (note 12) | 919 | (1,903) | 1,008
Depreciation and amortization | 25,543 | 16,425 | 6,576
Impairment of property and equipment (note 8) |  |  | (711)
Change in non-cash working capital items: |  |  |
(Increase) decrease in other current assets related to operations | (17,484) | 20,896 | (13,701)
Increase (decrease) in current liabilities related to operations | 7,270 | (6,290) | 923
Cash (used in) provided by operating activities | (39,527) | 487 | (27,646)
Cash flows from investing activities: |  |  |
Additions to mineral property interests and plant and equipment | (29,707) | (81,321) | (8,569)
Proceeds from disposal of property and equipment |  | 84 | 33
Investment in marketable equity securities (note 5) |  | (1,384) |
Proceeds from sale of investments (note 5) | 6,769 | 2,895 | 2,155
Return of investment received from Minera Santa Cruz S.A. (note 9) | 8,877 | 10,385 | 12,212
Cash used in investing activities | (14,061) | (69,341) | (22,260)
Cash flows from financing activities: |  |  |
Proceeds from sale of units, net of share issue costs (note 13) | 69,467 |  | 43,222
Sale of flow-through common shares, net of share issue costs (note 13) |  | 14,095 | 9,443
Proceeds of loan from related party (note 11 and note 15) |  | 25,000 |
Proceeds of loan (note 11) |  | 25,000 |
Debt issuance costs and lender fees (note 11) |  | (908) |
Proceeds of at-the-market common share issuance (note 13) | 1,851 | 918 |
Proceeds of exercise of stock options (note 13) | 544 | 192 | 121
Payment of finance lease obligations | (1,855) | (485) |
Shareholders' distribution (note 13) |  | (3,372) | (3,059)
Cash provided by financing activities | 70,007 | 60,440 | 49,727
Effect of exchange rate change on cash and cash equivalents | (408) | 1,750 | (108)
Increase (decrease) in cash, cash equivalents and restricted cash | 16,011 | (6,664) | (287)
Cash, cash equivalents and restricted cash, beginning of period | 30,489 | 37,153 | 37,440
Cash, cash equivalents and restricted cash, end of period (note 18) | 46,500 | 30,489 | 37,153
Supplemental disclosure of cash flow information: |  |  |
Interest paid | (5,218) | (1,923) |
Interest received | $ 133 | $ 372 | 501
Lexam VG Gold |  |  |
Cash flows from investing activities: |  |  |
Acquisition costs, net of cash and cash equivalents acquired (note 22) |  |  | (840)
Black Fox |  |  |
Cash flows from investing activities: |  |  |
Acquisition costs, net of cash and cash equivalents acquired (note 22) |  |  | $ (27,251)

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- Definition The cash inflow associated with the aggregate amount received by the entity through sale or maturity of marketable securities (held-to-maturity or available-for-sale) during the period. + References No definition available. + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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- Definition Amount of cash inflow from exercise of option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116856206&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3255-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669619-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669625-108580 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4573702-111684 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591551-111686 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3000-108585 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=108774443&loc=SL4569616-111683 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=116874947&loc=SL4591552-111686 + Details
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- Definition Amount of noncash expense for option under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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