Americas Gold and Silver (USAS) 40-F 31 Mar 21 2020 FY Annual report (Canada) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2020shares
Document And Entity Information
Entity Registrant Name	Americas Gold & Silver Corp
Entity Central Index Key	0001286973
Document Type	40-F
Document Period End Date	Dec. 31, 2020
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Current reporting status	Yes
Entity Emerging Growth Company	true
Entity Transition Period	false
Entity Common Stock, Shares Outstanding	117,975,579
Entity Interactive Data Current	Yes

Consolidated statements of fina

Consolidated statements of financial position - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 4,705	$ 19,998
Trade and other receivables (Note 7)	5,102	5,269
Inventories (Note 8)	8,069	7,159
Prepaid expenses	2,200	1,914
Derivative instruments (Note 26)		585
Current assets	20,076	34,925
Non-current assets
Restricted cash	4,082	4,007
Inventories (note 8)	1,339	1,339
Property, plant and equipment (Note 9)	259,319	190,389
Deferred tax assets (Note 24)		343
Total assets	284,816	231,003
Current liabilities
Trade and other payables	21,131	22,709
Deferred revenue (Note 10)	3,972	2,029
Derivative instruments (Note 11)	4,568	4,440
Loan payable (Note 13)	5,564
Glencore pre-payment facility (Note 14)	2,862	5,602
Government loan (Note 15)	947
Current liabilities	39,044	34,780
Non-current liabilities
Other long-term liabilities	4,619	5,645
Deferred revenue (Note 10)	19,350	22,978
Convertible debenture (Note 11)	9,953	9,935
Promissory note (Note 12)	5,000
Government loan (Note 15)	3,552
Post-employment benefit obligations (Note 16)	13,398	10,137
Decommissioning provision (Note 17)	8,279	7,765
Deferred tax liabilities (Note 24)	459	750
Total liabilities	103,654	91,990
Equity
Share capital (Note18)	350,707	284,673
Equity reserve	42,378	38,061
Foreign currency translation reserve	6,842	6,695
Deficit	(230,253)	(203,138)
Attributable to shareholders of the Company	169,674	126,291
Non-controlling interests (Note 20)	11,488	12,722
Total equity	181,162	139,013
Total liabilities and equity	$ 284,816	$ 231,003

Consolidated statements of loss

Consolidated statements of loss and comprehensive loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Profit or loss [abstract]
Revenue (Note 21)	$ 27,883	$ 58,410
Cost of sales (Note 22)	(31,239)	(56,724)
Depletion and amortization (Note 9)	(7,973)	(13,338)
Care and maintenance costs	(5,947)	(438)
Corporate general and administrative (Note 23)	(9,134)	(9,711)
Transaction costs (Note 6)	(23)	(3,467)
Exploration costs	(4,639)	(2,552)
Accretion on decommissioning provision	(166)	(210)
Interest and financing expense	(253)	(1,790)
Foreign exchange gain (loss)	546	(51)
Gain on disposal of assets (Note 9)	37
Gain (loss) on derivative instruments (Note 11 and 26)	(160)	(2,457)
Gain on derivative warrant liability		46
Loss before income taxes	(31,068)	(32,282)
Income tax recovery (expense) (Note 24)	1,002	(1,958)
Net loss	(30,066)	(34,240)
Attributable to:
Shareholders of the Company	(25,153)	(32,653)
Non-controlling interests	(4,913)	(1,587)
Net loss	(30,066)	(34,240)
Items that will not be reclassified to net loss
Actuarial loss on post-employment benefit obligations	(2,529)	(1,792)
Deferred income taxes	(741)	741
Items that may be reclassified subsequently to net loss
Foreign currency translation reserve	147	154
Other comprehensive loss	(3,123)	(897)
Comprehensive loss	(33,189)	(35,137)
Attributable to:
Shareholders of the Company	(26,968)	(33,550)
Non-controlling interests	(6,221)	(1,587)
Comprehensive loss	$ (33,189)	$ (35,137)
Loss per share attributable to shareholders of the Company
Basic and diluted	$ (0.24)	$ (0.46)
Weighted average number of common shares outstanding
Basic and diluted (Note 19)	103,941,184	71,421,798

Consolidated statements of chan

Consolidated statements of changes in equity - USD ($) shares in Thousands, $ in Thousands	Share capital [Member]	Preferred Share capital [Member]	Equity reserve [Member]	Foreign currency translation reserve [Member]	Deficit [Member]	Attributable to shareholders of the Company [Member]	Non-controlling Interests [Member]	Total
Balance at Dec. 31, 2018	$ 212,943		$ 34,837	$ 6,541	$ (170,125)	$ 84,196		$ 84,196
Balance, shares at Dec. 31, 2018	43,402
Net loss for the year					(32,653)	(32,653)	(1,587)	(34,240)
Other comprehensive income (loss) for the year				154	(1,051)	(897)		(897)
Contribution from non-controlling interests (Note 20)
At-the-market offering (Note 18)
September bought deal public offering (Note 18)
Joint venture agreement (Note 20)					691	691	14,309	15,000
San Felipe property option transaction costs	$ 600					600		600
San Felipe property option transaction costs, shares	452
Acquisition of Pershing Gold Corporation (Note 6)	$ 38,604	$ 5,714	1			44,319		44,319
Acquisition of Pershing Gold Corporation (Note 6), shares	24,849	3,678
Subscription agreement with Sandstorm Gold Ltd. (Note 18)	$ 7,371					7,371		7,371
Subscription agreement with Sandstorm Gold Ltd. (Note 18), shares	4,785
Conversion of convertible loans payable	$ 4,284					4,284		4,284
Conversion of convertible loans payable, shares	2,764
Warrants issued on acquisition transaction costs			471			471		471
Warrants issued on financing transaction costs			149			149		149
Reclassification of derivative warrant liability			680			680		680
Non-brokered private placement (Note 18)	$ 9,468		141			9,609		9,609
Non-brokered private placement (Note 18), shares	3,955
Shares and warrants issued on joint venture transaction costs	$ 697		202			899		899
Shares and warrants issued on joint venture transaction costs, shares	223
Conversion of preferred shares	$ 5,553	$ (5,553)
Conversion of preferred shares, shares	3,574	(3,574)
Share-based payments			3,384			3,384		3,384
Exercise of options, warrants, and deferred share units	$ 4,992		(1,804)			3,188		3,188
Exercise of options, warrants, and deferred share units, shares	2,603
Balance at Dec. 31, 2019	$ 284,512	$ 161	38,061	6,695	(203,138)	126,291	12,722	139,013
Balance, shares at Dec. 31, 2019	86,607	104
Net loss for the year					(25,153)	(25,153)	(4,913)	(30,066)
Other comprehensive income (loss) for the year				147	(1,962)	(1,815)	(1,308)	(3,123)
Contribution from non-controlling interests (Note 20)							4,987	4,987
Acquisition of San Felipe property (Note 9)	$ 1,687					4,350		4,350
Acquisition of San Felipe property (Note 9), shares	4,350
At-the-market offering (Note 18)	$ 9,015					14,276		14,276
At-the-market offering (Note 18), shares	14,276
May bought deal public offering (Note 18)	$ 10,270					19,130		19,130
May bought deal public offering (Note 18), shares	19,130
September bought deal public offering (Note 18)	$ 10,205					28,040		28,040
September bought deal public offering (Note 18), shares	28,040
Warrants issued on financing transaction costs			185			185		185
Conversion of preferred shares	$ 161	$ (161)
Conversion of preferred shares, shares	104	(104)
Share-based payments			4,221			4,221		4,221
Exercise of options and deferred share units	$ 87		(89)			149		149
Exercise of options and deferred share units, shares	238
Balance at Dec. 31, 2020	$ 117,975		$ 42,378	$ 6,842	$ (230,253)	$ 169,674	$ 11,488	$ 181,162
Balance, shares at Dec. 31, 2020	350,707

Consolidated statements of cash

Consolidated statements of cash flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net loss for the year	$ (30,066)	$ (34,240)
Adjustments for the following items:
Depletion and amortization	7,973	13,338
Income tax expense (recovery)	(1,002)	1,958
Accretion and decommissioning costs	166	210
Share-based payments	4,221	3,721
Unrealized gain on non-current assets		(17)
Provision on other long-term liabilities	1	50
Deferred costs on convertible loans		745
Deferred costs on convertible debenture	18	62
Deferred revenue		25,000
Non-cash transaction costs		899
Cash received from alternative minimum tax credits		344
Changes in bond on decommissioning costs	(83)	485
Net charges on post-employment benefit obligations	732	170
Loss on derivative instruments	713	3,982
Gain on derivative warrant liability		(46)
Total adjustments	(17,327)	16,661
Changes in non-cash working capital items:
Trade and other receivables	510	2,443
Inventories	(910)	(362)
Prepaid expenses	(286)	(58)
Trade and other payables	(908)	(4,541)
Net cash generated from (used in) operating activities	(18,921)	14,143
Investing activities
Expenditures on property, plant and equipment	(11,571)	(11,554)
Development costs on Relief Canyon Mine	(58,929)	(22,775)
Cash received from joint venture agreement		15,000
San Felipe property option payments		(2,250)
Investment in convertible loan receivable		(800)
Cash from acquisition of Pershing Gold Corporation		241
Net cash used in investing activities	(70,500)	(22,138)
Financing activities
Repayments to Glencore pre-payment facility	(2,740)	(5,508)
Lease payments	(3,353)	(284)
Financing from convertible debenture		10,000
Share issuance from private placement		9,609
Share issuance from subscription agreement		7,371
At-the-market offering	14,276
May bought deal public offering	19,315
September bought deal public offering	28,040
Loan payable	3,800
Government loan	4,499
Promissory note	5,000
Proceeds from exercise of options and warrants	149	3,188
Contribution from non-controlling interests	4,987
Net cash generated from financing activities	73,973	24,376
Effect of foreign exchange rate changes on cash	155	153
Increase (decrease) in cash and cash equivalents	(15,293)	16,534
Cash and cash equivalents, beginning of year	19,998	3,464
Cash and cash equivalents, end of year	4,705	19,998
Interest paid during the year	$ 1,624	$ 1,148

Consolidated statements of ca_2

Consolidated statements of cash flows (Supplemental Disclosures) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Cash and cash equivalents consist of:
Cash	$ 4,705	$ 19,998
Term deposits
Cash and cash equivalents	$ 4,705	$ 19,998

Corporate information

Corporate information	12 Months Ended
	Dec. 31, 2020
Corporate information [abstract]
Corporate information	1. Corporate information Americas Gold and Silver Corporation (the “Company”) was incorporated under the Canada Business Corporations Act on May 12, 1998 and conducts mining exploration, development and production in the Americas. The address of the Company’s registered office is 145 King Street West, Suite 2870, Toronto, Ontario, Canada, M5H 1J8. The Company’s common shares are listed on the Toronto Stock Exchange under the symbol “USA” and on the New York Stock Exchange American under the symbol “USAS”. The consolidated financial statements of the Company for the year ended December 31, 2020 were approved and authorized for issue by the Board of Directors of the Company on March 22, 2021. The Company has been closely monitoring developments in the COVID-19 outbreak declared as a global pandemic on March 11, 2020. Preventive measures to ensure the safety of the Company’s workforce and local communities have been implemented and there have been no outbreaks of COVID-19 at any of the Company’s operations to date. All of the Company’s mining and corporate operations continue to operate with the exception of mining operations in Cosalá halted by an illegal blockade. The Company continues to manage and respond to COVID-19 to mitigate and minimize potential impacts of this global pandemic, in addition to other uncertainties, such as the price of commodities, gold recovery from the Relief Canyon Mine, and illegal blockade at the Cosalá Operations placed under care and maintenance.

Basis of presentation

Basis of presentation	12 Months Ended
	Dec. 31, 2020
Basis of presentation [abstract]
Basis of presentation	2. Basis of presentation The Company prepares its consolidated financial statements on a going concern basis in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) and IFRS Interpretations Committee (“IFRIC”) which the Canadian Accounting Standards Board has approved for incorporation into Part I of the Chartered Professional Accountants Canada Handbook. These consolidated financial statements have been prepared under the historical cost method, except for certain financial instruments measured at fair value. The Company has consistently applied the accounting policies used in preparation of these consolidated financial statements throughout all the periods presented. In preparing these financial statements, management has considered all available information about the future, which is at least, but not limited to, twelve months from year-end. Significant accounting judgments and estimates used by management in the preparation of these consolidated financial statements are presented in Note 4.

Summary of significant accounti

Summary of significant accounting policies	12 Months Ended
	Dec. 31, 2020
Summary of significant accounting policies [abstract]
Summary of significant accounting policies	3. Summary of significant accounting policies The significant accounting policies used in the preparation of these consolidated financial statements are as follows: a. Consolidation These consolidated financial statements incorporate the financial statements of the Company and the entities controlled by the Company (its subsidiaries, including special purpose entities). Control exists when the Company has the power, directly or indirectly, to govern the financial and operating policies of an entity so as to obtain benefits from its activities. The financial statements of subsidiaries are included in the consolidated financial statements from the date that control commences until the date that control ceases. Where the Company’s interest in a subsidiary is less than 100%, the Company recognizes non-controlling interests. All intercompany transactions and balances, income and expenses have been eliminated. The Company applies the acquisition method to account for business combinations. Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. The Company elects on an acquisition-by-acquisition basis whether to measure non-controlling interest at its fair value, or at its proportionate share of the recognized amount of identifiable net assets. Acquisition-related costs are expensed as incurred. Goodwill is initially measured as the excess of the aggregate of the consideration transferred and the fair value of non-controlling interest over the net identifiable assets acquired and liabilities assumed. If this consideration is negative, a bargain purchase gain is recognized immediately in profit or loss. Special Purpose Entities (“SPE’s”) as defined by the IASB in SIC 12 Consolidation–Special Purpose Entities b. Segment reporting An operating segment is a component of the Company that engages in business activities from which it may earn revenues and incur expenses, including revenues and expenses that relate to transactions with any of the Company’s other components. Determination of operating segments are based on the reports reviewed by the chief operating decision makers that are used to make strategic decisions about resources to be allocated to the segment and performance assessment, and for which discrete financial information is available. Unallocated items not directly attributable to a segment comprise mainly of corporate assets and head office expenses. c. Presentation currency and functional currency The Company’s presentation currency is the U.S. dollar (“USD”). The functional currency of the Company’s Canadian subsidiaries is the Canadian dollar (“CAD”), and the functional currency of its U.S. and Mexican subsidiaries and SPE’s is the USD. The consolidated financial statements of the Company are translated into the presentation currency. Assets and liabilities have been translated using the exchange rate at period end, and income, expenses and cash flow items are translated using the rate that approximates the exchange rates at the dates of the transactions (the average rate for the period). All resulting exchange differences are recorded in the foreign currency translation reserve. d. Foreign currency translations Transactions in foreign currencies are translated into the entities’ functional currency at the exchange rate at the date of the transactions. Monetary assets and liabilities of the Company’s operations denominated in a currency other than the functional currency are translated at the rate in effect at the statement of financial position date, and non-monetary items at historic exchange rates at each transaction date. Revenue and expense items are translated at average exchange rates of the reporting period. Gains and losses on translation are charged to the statements of loss and comprehensive loss. e. Revenue recognition The Company applies the following five-step approach in recognizing revenue from contracts with customers: • Identify the enforceable contract with the customer • Identify the separate performance obligations in the contract from transferring the distinct good or service • Determine the transaction price for consideration of transferring the good or service • Allocate the transaction price to the separate performance obligations identified • Recognize revenue when each separate performance obligation is satisfied The Company recognizes revenue through entering into concentrate sales contracts with customers with the performance obligation of delivering its concentrate production in exchange for consideration valued initially under provisional pricing arrangements. Revenue from sales is recorded at the time of delivery based on forward prices for the expected date of final settlement. The final sale prices are determined by quoted market prices in a period subsequent to the date of sale. In these circumstances. Subsequent variations in metal prices are recognized as embedded derivative pricing adjustments at fair value from contracts with customers. The Company recognizes deferred revenue from advanced consideration received for fixed and variable precious metals deliveries over a specified period. Deferred revenue is recognized into revenue as performance obligations to metals delivery are satisfied over the term of the delivery contract. f. Defined benefit plans The cost of defined benefit plans is determined using the projected unit credit method. The related pension liability recognized in the consolidated statement of financial position is the present value of the defined benefit obligation at the end of the reporting period less the fair value of plan assets. Actuarial valuations for defined benefit plans are carried out annually. The discount rate applied in arriving at the present value of the pension liability represents the yield on high quality corporate bonds denominated in the currency in which the benefits will be paid, and that have terms to maturity approximating the terms of the related pension liability. Actuarial gains and losses arise from the difference between the actual long-term rate of return on plan assets for a period and the expected long-term rate of return on plan assets for that period, or from changes in actuarial assumptions used to determine the accrued benefit obligation. Actuarial gains and losses arising in the year are recognized in full in the period in which they occur, in other comprehensive income and retained earnings without recycling to the consolidated statement of loss and comprehensive loss in subsequent periods. Current service cost, the recognized element of any past service cost, interest expense arising on the pension liability and the expected return on plan assets are recognized in the same line items in the consolidated statement of loss and comprehensive loss as the related compensation cost. The values attributed to plan liabilities are assessed in accordance with the advice of independent qualified actuaries. Service costs arising from plan amendments are recognized immediately. g. Share-based payments The Company’s stock option plan allows its employees (including directors and officers) and non-employees to acquire shares of the Company. Accordingly, the fair value of the option is either charged to operations or capitalized to exploration or development expenditures, depending on the accounting for the optionee’s other compensation, with a corresponding increase in equity reserve. The costs of equity-settled transactions with employees are measured by reference to the fair value at the date on which they are granted using the Black-Scholes Option Pricing Model. The costs of equity-settled transactions are recognized, together with a corresponding increase in equity reserve, over the period in which the performance and/or service conditions are fulfilled, ending on the date on which the relevant employees become fully entitled to the award (the “vesting date”). The cumulative expense recognized for equity-settled transactions at each reporting date up to the vesting date reflects the Company’s best estimate of the number of equity instruments that will ultimately vest. The charge or credit for a period represents the movement in cumulative expense recognized as at the beginning and end of that period and the corresponding amount is represented in equity reserve. No expense is recognized for awards that do not ultimately vest. Where the terms of an equity-settled award are modified, the minimum expense recognized is the expense as if the terms had not been modified. An additional expense is recognized for any modification which increases the total fair value of the share-based payment arrangement, or is otherwise beneficial to the employee as measured at the date of modification. h. Income taxes Income tax comprises of current and deferred tax. Income tax is recognized in the consolidated statement of loss and comprehensive loss except to the extent that it relates to items recognized directly in other comprehensive income (loss) or directly in equity, in which case the income tax is also recognized directly in other comprehensive income (loss) or equity, respectively. The current income tax charge is calculated on the basis of the tax laws enacted or substantively enacted at the end of the reporting period in the countries where the Company’s subsidiaries operate and generate taxable profit. Management periodically evaluates positions taken in tax returns with respect to situations in which applicable tax regulation is subject to interpretation. It establishes provisions where appropriate on the basis of amounts expected to be paid to the tax authorities. Deferred income tax is recognized in respect of temporary differences between the carrying amount of assets and liabilities in the consolidated statement of financial position and the corresponding tax bases used in the computation of taxable profit. Deferred income tax is determined using tax rates (and laws) that have been enacted or substantively enacted at the consolidated statement of financial position date and are expected to apply when the related deferred income tax asset is realized or the deferred income tax liability is settled. Deferred income tax assets are recognized for all deductible temporary differences, carry-forward of unused tax credits and unused tax losses to the extent it is probable future taxable profits will be available against which they can be utilized. The Company did not recognize any deferred income taxes relating to its investments in subsidiaries. Deferred tax assets and liabilities are offset where they relate to income taxes levied by the same taxation authority and the Company has the legal right and intent to offset. i. Earnings/loss per share Basic earnings/loss per share is calculated by dividing the net earnings/loss for the period attributable to equity owners of the Company by the weighted average number of common shares outstanding during the period. Diluted earnings/loss per share is calculated by adjusting the weighted average number of common shares outstanding for dilutive instruments. The number of shares included with respect to options, warrants and similar instruments is computed using the treasury stock method. The treasury stock method, which assumes that outstanding stock options and warrants with an average exercise price below the market price of the underlying shares, are exercised and the assumed proceeds are used to repurchase common shares of the Company at the average market price of the common shares for the period. The Company’s potentially dilutive common shares comprise stock options granted to employees, and warrants. j. Comprehensive income (loss) Comprehensive income (loss) is the change in the Company’s net assets that results from transactions, events and circumstances from sources other than the Company’s shareholders and includes items that would not normally be included in net earnings such as foreign currency gains or losses related to the Company’s net investment in foreign operations and unrealized gains or losses on available-for-sale securities net of tax. The Company’s comprehensive income (loss), components of other comprehensive income (loss) and cumulative translation adjustments are presented in the consolidated statements of comprehensive income (loss) and the consolidated statements of changes in equity. k. Inventories Concentrates, ore stockpile, and spare parts and supplies are valued at the lower of cost and estimated net realizable value. Cost for concentrates and ore stockpile includes all direct costs incurred in production including direct labour and materials, freight, depreciation and amortization and directly attributable overhead costs determined on a weighted average basis for the Mexican operations and first in, first out method for the U.S. operations. Cost for spare parts and supplies are determined using the first in, first out method. Net realizable value is calculated as the estimated price at the time of sale based on prevailing and future metal prices less estimated future production costs to convert inventories into saleable form. Any write-downs of inventory to net realizable value are recorded as cost of sales. If there is a subsequent increase in the value of inventories, the previous write-downs to net realizable value are reversed to the extent that the related inventory has not been sold. Ore stockpile represents ore that has been extracted from the mine and is available for further processing. Costs added to ore stockpile are valued based on current mining cost per tonne incurred up to the point of stockpiling the ore and are removed at the average cost per tonne. Ore stockpile is verified by periodic surveys. Materials and supplies inventory are valued at the lower of cost and net realizable value, where cost is determined using the first-in-first-out method. Any provision for obsolescence is determined by reference to specific items of stock. A regular review is undertaken to determine the extent of any provision for obsolescence by comparing those items to their net realizable value. If carrying value exceeds net realizable value, a write-down is recognized. l. Investments An associate is an entity over which the Company has significant influence and that is neither a subsidiary nor an interest in a joint venture. Significant influence is the power to participate in the financial and operating policy decisions of the investee but is not control or joint control over those policies. Investments in companies over which the Company exercises neither control nor significant influence and are designated as financial assets at fair value through other comprehensive income. Related unrealized gains (losses) are recognized in other comprehensive income (loss), unless the decrease in value is significant or prolonged, in which case the loss is recorded in the statements of loss and comprehensive loss. m. Property, plant and equipment (i) Producing mining interests are carried at cost less accumulated depletion and amortization and accumulated impairment losses. Following the completion of commissioning, the costs related to the mining interests are depleted and charged to operations on the unit of production method as a proportion of estimated recoverable mineral reserves. Completion of the commissioning is deemed to have occurred when major mine and processing plant components are completed, operating results are being achieved consistently for a period of time and that there are indicators that these operational results, including mill capacity and recovery, will be sustainable in the future. Construction in progress is not depreciated until the assets are ready for their intended use. (ii) The Company follows the method of accounting for its non-producing mining interests whereby all costs, net of incidental revenues, relating to the acquisition and development are deferred and capitalized by property until the property to which they directly relate is placed into production, sold, discontinued or subject to a condition of impairment. Exploration expenses not related to placing the property into production are expensed as incurred. In the event that a mining interest is placed into production, capitalization of costs ceases, the costs are transferred to producing mining interests and the mining interest is depleted on a unit of production basis. The recoverability of amounts is dependent upon the discovery of economically recoverable mineral reserves, the ability of the Company to finance the development of the properties, and on the future profitable production or proceeds from the disposition thereof. (iii) Property, plant and equipment are carried at cost less accumulated depreciation and accumulated impairment losses. When parts of an item of property, plant and equipment have different useful lives, they are accounted for as separate assets (major components) of property, plant and equipment. The cost of replacing a part of an item of property, plant and equipment is recognized in the carrying amount of the item if it is probable that the future economic benefits embodied within that part will flow to the Company, and its cost can be measured reliably. The carrying amount of the replaced part is derecognized. Repairs and maintenance are charged to the consolidated statement of loss and comprehensive loss during the period in which they are incurred. Depreciation is recorded over the estimated useful life of the asset as follows: • Mining interests – unit of production based upon estimated proven and probable reserves • Plant and equipment – 3-30 years over straight line basis • Corporate office equipment – 3-10 years over straight line basis Residual values, method of amortization and useful lives of the assets are reviewed annually and adjusted if appropriate. (iv) The Company reviews and evaluates the carrying values of its tangible and intangible assets to determine whether there is an indication of impairment or reversal of impairment. For exploration and evaluation assets, indication includes but is not limited to expiration of the right to explore, substantive expenditure in the specific area is neither budgeted nor planned, and if the entity has decided to discontinue exploration activity in the specific area. When the carrying value of assets exceeds the recoverable amount, the carrying value of the assets is reduced to the recoverable amount. The recoverable amount takes into account a market participant’s ability to generate economic benefits by using the asset in its highest and best use of the asset. To achieve this, the recoverable amount is the higher of value in use (being the net present value of expected pre-tax future cash flows of the relevant asset) and fair value less costs to sell the asset. If, after the Company has previously recognized an impairment loss, circumstances indicate that the recoverable amount of the impaired assets is greater than the carrying amount, the Company reverses the impairment loss by the amount the revised fair value exceeds its carrying amount, to a maximum of the previous impairment loss. In no case shall the revised carrying amount exceed the original carrying amount, after depreciation or amortization, that would have been determined if no impairment loss had been recognized. n. Decommissioning provision The Company recognizes contractual, statutory and legal obligations associated with retirement of mining properties when those obligations result from the acquisition, construction, development or normal operation of the assets. Initially, the decommissioning provision is recognized at its fair value in the period in which it is incurred. Upon initial recognition of the liability, the corresponding decommissioning provision is added to the carrying amount of that asset and the cost is amortized as an expense over the economic life of the related asset. Following the initial recognition of the decommissioning provision, the periodic unwinding of the discount is recognized in the consolidated statement of loss and comprehensive loss and adjusted for changes to the amount or timing of the underlying cash flows to settle the obligation. o. Financial instruments The Company classifies and measures its financial instruments at fair value, with changes in fair value recognized in profit or loss as they arise. Unless restrictive criteria regarding the objective and contractual cash flows of the instrument are met then classification and measurement are at either amortized cost or fair value through other comprehensive income. Cash and cash equivalents and trade and other receivables are classified and measured as financial assets at amortized cost. Embedded derivatives arising from subsequent adjustments in provisional sales revenue are classified and measured as financial instruments at fair value through profit or loss. Trade and other payables are classified and measured as financial liabilities at amortized cost. Loans receivable and payable are classified and measured as financial assets at fair value through profit or loss and as financial liabilities at fair value through profit or loss, respectively. Investment in equity instruments are classified and measured as financial assets at fair value through other comprehensive income. Loans from the government are accounted for as a loan payable until forgiveness is reasonably assured and the loan is derecognized through the consolidated statement of loss and comprehensive loss. p. Borrowing costs Borrowing costs directly attributable to the acquisition, construction or production of a qualifying asset are capitalized as part of the cost of that asset and amortized over the expected useful life of that asset. Other borrowing costs not directly attributable to a qualifying asset are expensed in the period incurred. q. Provisions Provisions are recognized when the Company has a present obligation (legal or constructive) that has arisen as a result of a past event and it is probable that a future outflow of resources will be required to settle the obligation, provided that a reliable estimate can be made of the amount of the obligation. Provisions are measured at the present value of the expenditures expected to be required to settle the obligation using a pre-tax rate that reflects current market assessments of the time value of money and the risk specific to the obligation. The increase in the provision due to passage of time is recognized as interest expense. r. Related party transactions Parties are considered to be related if one party has the ability, directly or indirectly, to control the other party or exercise significant influence over the other party in making financial and operating decisions. Parties are also considered to be related if they are subject to common control or common significant influence, and related parties may be individuals or corporate entities. A transaction is considered to be a related party transaction when there is a transfer of resources or obligations between related parties. Related party transactions that are in the normal course of business and have commercial substance are measured at the exchange amount. s. Restricted cash Restricted cash includes cash that has been pledged for reclamation and closure activities which are not available for immediate disbursement.

Significant accounting judgment

Significant accounting judgments and estimates	12 Months Ended
	Dec. 31, 2020
Significant accounting judgments and estimates [abstract]
Significant accounting judgments and estimates	4. Significant accounting judgments and estimates The preparation of financial statements in conformity with IFRS requires management to make judgments and estimates that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. The areas which require management to make significant judgments, estimates and assumptions in determining carrying values include, but are not limited to: (i) Proven and probable reserves are the economically mineable parts of the Company’s measured and indicated mineral resources. The Company estimates its proven and probable reserves and measured and indicated and inferred mineral resources based on information compiled by appropriately qualified persons. The information relating to the geological data on the size, depth and shape of the ore bodies requires complex geological judgments to interpret the data. The estimation of future cash flows related to proven and probable reserves is based upon factors such as estimates of foreign exchange rates, commodity prices, future capital requirements and production costs along with geological assumptions and judgments made in estimating the size, grade and recovery of the ore bodies. Changes in the proven and probable reserves or measured, indicated and inferred mineral resources estimates may impact the carrying value of mining properties and equipment, depletion and amortization, impairment assessments and the timing of decommissioning provisions. (ii) Mining properties are depleted using the unit-of-production method over a period not to exceed the estimated life of the ore body based on estimated recoverable reserves. Property, plant and equipment are depreciated, net of residual value over their estimated useful life but do not exceed the related estimated life of the mine based on estimated recoverable mineral reserves. The calculation of the units of production rate, and therefore the annual depletion and amortization expense, could be materially affected by changes in the underlying estimates. Changes in estimates can be the result of actual future production differing from current forecasts of future production and expansion of mineral reserves through exploration activities. Significant judgment is involved in the determination of useful life and residual values for the computation of depletion and amortization. No assurance can be given that actual useful lives and residual values will not differ significantly from current assumptions. (iii) The Company assesses its decommissioning provision on an annual basis or when new material information becomes available. Mining and exploration activities are subject to various laws and regulations governing the protection of the environment. In general, these laws and regulations are continually changing and the Company has made, and intends to make in the future, expenditures to comply with such laws and regulations. Accounting for decommissioning provision requires management to make estimates of the time and future costs the Company will incur to complete the rehabilitation work required to comply with existing laws and regulations at each mining operation. Also, future changes to environmental laws and regulations could increase the extent of rehabilitation work required to be performed by the Company. Increases in future costs could materially impact the amounts charged to operations for decommissioning provision. The provision represents management’s best estimate of the present value of the future decommissioning provision. The actual future expenditures may differ from the amounts currently provided. (iv) The amount expensed for share-based compensation is based on the application of a recognized option valuation formula, which is highly dependent on, among other things, the expected volatility of the Company’s registered shares, estimated forfeitures, and the expected life of the options. The Company uses an expected volatility rate for its shares based on past stock trading data, adjusted for future expectations, and actual volatility may be significantly different. The resulting value calculated is not necessarily the value that the holder of the option could receive in an arm’s length transaction, given that there is no market for the options and they are not transferable. It is management’s view that the value derived is highly subjective and dependent entirely upon the input assumptions made. (v) Preparation of the consolidated financial statements requires an estimate of income taxes in each of the jurisdictions in which the Company operates. The process involves an estimate of the Company’s current tax exposure and an assessment of temporary differences resulting from differing treatment of items, such as depletion and amortization, for tax and accounting purposes, and when they might reverse. These differences result in deferred tax assets and liabilities that are included in the Company’s consolidated statements of financial position. An assessment is also made to determine the likelihood that the Company’s future tax assets will be recovered from future taxable income. To the extent that recovery is not considered likely, the related tax benefits are not recognized. Judgment is required to continually assess changing tax interpretations, regulations and legislation, to ensure liabilities are complete and to ensure assets, net of valuation allowances, are realizable. The impact of different interpretations and applications could be material. (vi) The Company applies judgment in assessing whether indicators of impairment or reversal of impairment exist for a cash generating unit which would require impairment testing. Internal and external sources such as changes in use of an asset, capital and production forecasts, commodity prices, quantities of reserves and resources, and changes in market, economic, and legal environment are used by management in determining whether there are any indicators. (vii) The determination of timing on which a mining property enters into commercial production is a significant judgment since capitalization of development costs ceases and revenue recognition begins upon declaration of commercial production. As a mining property is constructed, development costs incurred are capitalized while pre-production costs and revenues are capitalized and accumulated into such development costs. Commercial production is declared once the mining property is available for its intended use on a commercial scale as defined by management. Revenue recognition, cost of sales, and depletion of the mining property begins when commercial production has been achieved, and are recognized into the consolidated statement of loss and comprehensive loss, subject to impact of amendments to IAS 16 (see Note 5). (viii) The Company had negative operating cash flows in 2020 while the Relief Canyon Mine was in development and a working capital deficit at year-end. Subsequent to year-end, the Company declared commercial production of the Relief Canyon Mine effective January 11, 2021 and completed a bought deal public offering for aggregate gross proceeds of approximately $26.7 million or $33.94 million CAD (see Note 30). With commercial production having been declared, the Company anticipates that it will begin to generate positive operating cash flows which will allow it to meet its financial obligations as they come due. The ability to achieve the expected sustaining production levels at Relief Canyon Mine, allowing the Company to generate sufficient operating cash flows, is a significant judgment in these financial statements with respect to the Company’s liquidity and the $138.2 million carrying value of the Relief Canyon segment. Should the Company experience negative operating cash flows in future periods or experience significant changes to anticipated production, the Company may need to raise additional funds through the issuance of equity or debt securities.

Changes in accounting policies

Changes in accounting policies and recent accounting pronouncements	12 Months Ended
	Dec. 31, 2020
Changes in accounting policies and recent accounting pronouncements [abstract]
Changes in accounting policies and recent accounting pronouncements	5. Changes in accounting policies and recent accounting pronouncements The following are future changes in accounting policies not yet effective as at December 31, 2020: (i) Amendments to IAS 16 - Property, Plant and Equipment – Proceeds before Intended Use

Acquisition of Pershing Gold Co

Acquisition of Pershing Gold Corporation	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about business combination [abstract]
Acquisition of Pershing Gold Corporation	6. Acquisition of Pershing Gold Corporation On April 3, 2019, the Company obtained control and completed the acquisition of Pershing Gold Corporation (“Pershing Gold”) via an agreement and plan of merger dated September 28, 2018. The merger was completed by the Company acquiring all the outstanding common and preferred shares of Pershing Gold through exchanging each outstanding Pershing Gold common share for 0.715 common shares of the Company and exchanging each outstanding Pershing Gold preferred share for 461.44 common or preferred shares of the Company. Outstanding Pershing Gold options and restricted share units were exchanged for the Company’s common share considerations and outstanding Pershing Gold warrants became exercisable for the Company’s common shares under the same exchange ratio. The merger has been accounted for as a business combination with the Company identified as the acquirer for accounting purposes. The consideration paid is calculated as follows: Non-diluted Pershing Gold common shares outstanding, April 3, 2019 33,686,921 Implicit share exchange ratio 0.715 The Company's common shares exchanged for Pershing Gold common shares 24,085,928 The Company's common share price, April 3, 2019 (USD) 1.55 Total common share consideration $ 37,418 Consideration on the exchange of Pershing Gold for the Company's equity instruments: Preferred shares exchanged for common shares 383 Preferred shares exchanged for preferred shares 5,714 Restricted share units exchanged for common shares 803 Warrants exchanged for warrants 1 Total equity consideration 44,319 Pre-existing convertible loan from the Company to Pershing Gold 2,913 Total consideration $ 47,232 The purchase price allocation is as follows: Cash and cash equivalents $ 241 Prepaid expenses 609 Restricted cash 3,787 Property, plant and equipment 49,272 Trade and other payables (5,454 ) Decommission provision (1,223 ) Net assets acquired $ 47,232 The acquisition of Pershing Gold by the Company was completed on April 3, 2019. As of December 31, 2019, the determination of fair value of assets and liabilities acquired has been finalized.

Trade and other receivables

Trade and other receivables	12 Months Ended
	Dec. 31, 2020
Trade and other receivables [abstract]
Trade and other receivables	7. Trade and other receivables December 31, December 31, 2020 2019 Trade receivables $ 2,761 $ 4,560 Value added taxes receivable 1,916 636 Other receivables 425 73 $ 5,102 $ 5,269

Inventories

Inventories	12 Months Ended
	Dec. 31, 2020
Classes of current inventories [abstract]
Inventories	8. Inventories December 31, December 31, 2020 2019 Concentrates $ 2,327 $ 1,292 Current ore stockpiles 607 497 Spare parts and supplies 5,135 5,370 8,069 7,159 Long-term ore stockpiles 1,339 1,339 $ 9,408 $ 8,498 The amount of inventories recognized as an expense was $31.2 million during the year ended December 31, 2020 (2019: $56.7 million). During the year ended December 31, 2020, the concentrates and ore stockpiles, and spare parts and supplies write-down to net realizable value included in cost of sales was $0.3 million (2019: $1.2 million) and $0.2 million (2019: nil), respectively.

Property, plant and equipment

Property, plant and equipment	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [abstract]
Property, plant and equipment	9. Property, plant and equipment Corporate Mining Non-producing Plant and Right-of-use office interests properties equipment lease assets equipment Total Cost Balance at January 1, 2019 $ 113,428 $ - $ 54,542 $ - $ 95 $ 168,065 Acquisition of Pershing Gold - 34,335 14,927 - 10 49,272 Asset additions 7,600 11,236 19,936 7,358 17 46,147 Change in decommissioning provision 93 2,510 - - - 2,603 Reclassification - 9,263 (343 ) 343 - 9,263 Balance at December 31, 2019 121,121 57,344 89,062 7,701 122 275,350 Asset additions 7,238 51,007 15,969 2,211 118 76,543 Change in decommissioning provision 370 (10 ) - - - 360 Balance at December 31, 2020 $ 128,729 $ 108,341 $ 105,031 $ 9,912 $ 240 $ 352,253 Accumulated depreciation and depletion Balance at January 1, 2019 $ 41,610 $ - $ 29,964 $ - $ 49 $ 71,623 Depreciation/depletion for the year 8,605 - 4,415 305 13 13,338 Balance at December 31, 2019 50,215 - 34,379 305 62 84,961 Depreciation/depletion for the year 4,145 - 3,510 291 27 7,973 Balance at December 31, 2020 $ 54,360 $ - $ 37,889 $ 596 $ 89 $ 92,934 Carrying value at December 31, 2019 $ 70,906 $ 57,344 $ 54,683 $ 7,396 $ 60 $ 190,389 at December 31, 2020 $ 74,369 $ 108,341 $ 67,142 $ 9,316 $ 151 $ 259,319 As at January 1, 2019, the Company recognized $0.9 million of right-of-use assets from leases upon adoption of IFRS 16 using the modified retrospective approach, where $0.1 million were from the Cosalá Operations, $0.3 million were from the Galena Complex, and $0.5 million were from Corporate and Other. The associated lease liabilities were classified into trade and other payables and other long-term liabilities in the consolidated statement of financial position. On March 2, 2017, the Company entered into an option acquisition agreement with Impulsora Minera Santacruz S.A. de C.V., a wholly-owned subsidiary of Santacruz Silver Mining Ltd. (“Santacruz”), to acquire an existing option with Minera Hochschild Mexico S.A. de C.V. (“Hochschild”) for the right to acquire a 100% interest of the San Felipe property located in Sonora, Mexico. As at December 31, 2018, the property purchase option was reclassified as an asset held-for-sale as its carrying amount will be recovered principally through sale. A write-down of $3.7 million was recorded for the year ended December 31, 2018 to measure the asset held-for-sale at the lower of its carrying amount of $10.6 million and fair value less estimated costs to sell of $6.9 million. The Company made three of the remaining eight contractual quarterly option payments of $0.75 million to Hochschild during the year ended December 31, 2019. As at December 31, 2019, the property purchase option was reclassified to property, plant and equipment as its carrying amount of $9.3 million will be recovered principally through continuing use. On October 8, 2020, the Company settled its remaining contractual option payments with Hochschild through issuance of the Company’s common shares to acquire the 100% interest of the San Felipe property (see Note 18). As at December 31, 2020, the carrying amount of the San Felipe property was $13.0 million included in non-producing properties. Non-current assets are tested for impairment or impairment reversals when events or changes in circumstances suggest that the carrying amount may not be recoverable. Impairment indicators were identified during the year ended December 31, 2020 from timing of commercial production of Relief Canyon Mine and illegal blockade of Cosalá Operations. The Company assessed the recoverability of the carrying amount of these cash-generating units and no impairment was identified. No impairment or impairment reversal indicators were identified for the year ended December 31, 2020 for the Company’s other cash-generating units, including non-producing properties. The Company recognized a gain of $0.1 million during the year ended December 31, 2020 related to proceeds received through the sale of plant and equipment. The amount of borrowing costs capitalized as property, plant and equipment was $4.2 million during the year ended December 31, 2020 (2019: $0.9 million). The carrying amount of property and equipment from the Relief Canyon Mine is approximately $42.9 million as at December 31, 2020.

Deferred revenue

Deferred revenue	12 Months Ended
	Dec. 31, 2020
Accruals and deferred income [abstract]
Deferred revenue	10. Deferred revenue On April 3, 2019, the Company entered into a $25 million precious metals delivery and purchase agreement (the “Purchase Agreement”) with Sandstorm Gold Ltd. (“Sandstorm”) for the construction and development of the Relief Canyon Mine. The Purchase Agreement consists of a combination of fixed and variable deliveries from the Relief Canyon Mine. The Purchase Agreement has a repurchase option for the Company exercisable at any time to reduce the variable deliveries to Sandstorm from 4% to 2% by delivering 4,000 ounces of gold plus additional ounces of gold compounded annually at 10%. On initial recognition and as at December 31, 2020, the fair value of the repurchase option was nil. The Company recorded the advances received on precious metals delivery, net of transaction costs, as deferred revenue and will recognize the amounts in revenue as performance obligations to metals delivery are satisfied over the term of the metals delivery and purchase agreements. The advances received on precious metals delivery is expected to reduce to nil through deliveries of the Company’s own production to Sandstorm. The Company determined the amortization of deferred revenue on a per unit basis to be equal to the expected total deliveries of gold ounces over the term of the precious metals delivery and purchase agreements. Interest expense of $1.8 million was capitalized as borrowing costs to property, plant and equipment for the year ended December 31, 2020 (2019: $0.5 million) in connection with the accretion of a significant financing component determined from the advances received on precious metals delivery. The following are components of deferred revenue as at December 31, 2020: Advances received $ 25,000 Recognition of revenue (2,750 ) Deferred revenue 22,250 Deferred transaction costs (409 ) Accretion on significant financing component 1,481 Net deferred revenue 23,322 Less: current portion (3,972 ) Non-current portion $ 19,350

Convertible debenture

Convertible debenture	12 Months Ended
	Dec. 31, 2020
Disclosure of classes of share capital [abstract]
Convertible debenture	11. Convertible debenture On April 3, 2019, the Company issued a $10 million convertible debenture (the “Convertible Debenture”) to Sandstorm due April 3, 2023 with interest payable at 6% per annum and repayable at the Company’s option prior to maturity. The funds available under the Convertible Debenture included the principal amount of the $3 million unsecured, promissory note previously issued to Sandstorm by the Company. The Convertible Debenture may be converted into common shares of the Company at Sandstorm’s option at a conversion price of $2.14 and may be prepaid at the Company’s option at any time prior to the maturity date. The Company recorded a net derivative liability of nil on initial recognition based on the estimated fair value of the conversion and prepayment option and recognized a loss of $0.2 million in the consolidated statements of loss and comprehensive loss for the year ended December 31, 2020 (2019: loss of $4.4 million) as a result of the change in the estimated fair value of the conversion and prepayment option. Interest expense of $0.6 million was capitalized as borrowing costs to property, plant and equipment for the year ended December 31, 2020 (2019: $0.4 million) in connection with the Convertible Debenture. The initial fair value of the principal portion of the Convertible Debenture was determined using a market interest rate for an equivalent non-convertible instrument at the issue date. The principal portion is subsequently recognized on an amortized cost basis until extinguished on conversion or maturity. The remainder of the proceeds are allocated to the conversion option.

Promissory note

Promissory note	12 Months Ended
	Dec. 31, 2020
Disclosure of Promissory note [abstract]
Promissory note	12. Promissory note On December 15, 2020, the Company issued a $5 million promissory note (the “Promissory Note”) to Sandstorm due June 15, 2022 with interest payable at 7% per annum and repayable at the Company’s option prior to maturity. Interest expense of $0.1 million was capitalized as borrowing costs to property, plant and equipment for the year ended December 31, 2020 in connection with the Promissory Note.

Loan payable

Loan payable	12 Months Ended
	Dec. 31, 2020
Loan Payable
Loan payable	13. Loan payable On January 16, 2020, the Company entered into a $5 million precious metals delivery and purchase agreement with Macquarie Bank Ltd. (“Macquarie”) for working capital purposes at the Relief Canyon Mine to be settled through monthly fixed deliveries of gold production ounces commencing July 31, 2020. On July 31, 2020, the Company amended the $5 million precious metals delivery and purchase agreement with Macquarie to a secured loan payable settled through monthly fixed cash payments totaling $7.2 million payable over a 6-month period commencing October 2020, among other terms (the “Loan Payable”). The Company also entered into gold collar options over the same period as the fixed cash payments and recorded a net derivative asset of nil on initial recognition and as at December 31, 2020 based on the estimated fair value of the gold collar options. Financing expense of $1.7 million was capitalized as borrowing costs to property, plant and equipment for the year ended December 31, 2020 in connection with the Loan Payable.

Glencore pre-payment facility

Glencore pre-payment facility	12 Months Ended
	Dec. 31, 2020
Disclosure of Pre-payment facility [abstract]
Glencore pre-payment facility	14. Glencore pre-payment facility On January 29, 2017, the Company entered into a pre-payment facility for $15.0 million with Metagri S.A. de C.V., a subsidiary of Glencore PLC (“Glencore”), to fund a portion of the development costs for the San Rafael project within the Cosalá district of Sinaloa, Mexico (the “Pre-Payment Facility”). The Pre-Payment Facility was drawn in full on March 30, 2017, an initial term of four years at an interest of U.S. LIBOR rate plus 5% per annum, and is secured by a promissory note in the amount of up to $15.0 million issued by the Company, a corporate guarantee in favour of Glencore, and limited asset level security on the San Rafael project. The Company has also entered into four-year offtake agreements with Glencore for the zinc and lead concentrates produced from the San Rafael Mine where Glencore will pay for the concentrates at the prevailing market prices for silver, zinc and lead, less customary treatment, refining and penalty charges. Repayment of principal on the Pre-Payment Facility began in January 2018 as an additional tonnage charge on shipments of concentrate where $3.9 million and $5.5 million were paid during the years ended December 31, 2018 and 2019, respectively. The Company paid $2.7 million during the year ended December 31, 2020.

Government loan

Government loan	12 Months Ended
	Dec. 31, 2020
Disclosure of Government loan [abstract]
Government loan	15. Government loan On May 11, 2020, the Company received approximately $4.5 million in loan through the Paycheck Protection Program from the U.S. CARES Act (the “Government Loan”) to assist with payroll and other expenses at the Galena Complex during the COVID-19 pandemic. The Government Loan has a term of two years at an interest rate of 1% per annum and may be forgiven if proceeds are used for payroll and other specifically defined expenses and employee and compensation levels are maintained. The Government Loan will be recognized as a reduction of related payroll and other expenses incurred once forgiveness is reasonably assured.

Post-employment benefit obligat

Post-employment benefit obligations	12 Months Ended
	Dec. 31, 2020
Disclosure of defined benefit plans [abstract]
Post-employment benefit obligations	16. Post-employment benefit obligations The Company maintains two non-contributory defined benefit pension plans covering substantially all employees at its U.S. operating subsidiary, U.S. Silver – Idaho, Inc. One plan covers salaried employees and one plan covers hourly employees. Benefits for the salaried plan are based on salary and years of service. Hourly plan benefits are based on negotiated benefits and years of service. The Company’s funding policy is to contribute annually the minimum amount prescribed, as specified by applicable regulations. The expected average service life of the active plan participants as at December 31, 2020 is approximately 9 years. The amounts recognized in the consolidated statements financial position are as follows: December 31, December 31, 2020 2019 Present value of funded obligations 34,024 29,519 Fair value of plan assets 20,626 19,382 Deficit of funded plans $ 13,398 $ 10,137 The movements in the defined benefit obligations are as follows: December 31, December 31, 2020 2019 Obligations, beginning of year $ 29,519 $ 25,068 Current service costs 753 579 Interest costs 949 1,048 Benefits paid (1,111 ) (1,043 ) Actuarial loss 3,914 3,867 Obligations, end of year $ 34,024 $ 29,519 The movements in the fair value of plan assets are as follows: December 31, December 31, 2020 2019 Assets, beginning of year $ 19,382 $ 16,894 Return on assets 625 714 Actuarial gain 1,385 2,074 Employer contributions 345 743 Benefits paid (1,111 ) (1,043 ) Assets, end of year $ 20,626 $ 19,382 The amounts recognized in the consolidated statements of loss and comprehensive loss are as follows: December 31, December 31, 2020 2019 Current service costs, interest costs, and return on assets included in cost of sales $ 1,077 $ 913 The principal actuarial assumptions are as follows: December 31, December 31, 2020 2019 Discount rate (expense) 3.25 % 4.25 % Discount rate (year end disclosures) 2.50 % 3.25 % Future salary increases (salaried plan only) 5.00 % 5.00 % A 1% decrease in discount rate would have resulted in approximately $6.1 million increase in the defined benefit obligation from $34.0 million to $40.1 million as at December 31, 2020 (2019: $4.9 million increase in the defined benefit obligation from $29.5 million to $34.4 million). A 1% increase in future salary increases would have resulted in approximately $0.1 million increase in the defined benefit obligation from $34.0 million to $34.1 million as at December 31, 2020 (2019: $0.1 million increase in the defined benefit obligation from $29.5 million to $29.6 million). Plan assets are fully comprised of pooled or mutual funds. The expected return on plan assets at 3.2% (2019: 4.2%) is determined by considering the expected returns available on the assets underlying the current investment policy. Expected yield on fixed interest investments is based on gross redemption yields as at the end of the reporting period. Expected returns on equity investments reflect long-term real rates of return in the market. Expected contributions to pension benefit plans for the year ended December 31, 2021 are approximately $2.2 million, inclusive of contributions for fiscal 2020 of $1.0 million. For the year ended December 31, 2020, the actuarial losses charged to other comprehensive loss are $2.5 million (2019: actuarial losses of $1.8 million).

Decommissioning provision

Decommissioning provision	12 Months Ended
	Dec. 31, 2020
Disclosure of other provisions [abstract]
Decommissioning provision	17. Decommissioning provision The decommissioning provision consists of land rehabilitation, demolition of buildings and mine facilities, and related costs. Although the ultimate amount of the decommissioning provision is uncertain, the fair value of these obligations is based on information currently available, including closure plans and the Company’s interpretation of current regulatory requirements. Fair value is determined based on the net present value of future cash expenditures upon reclamation and closure. Reclamation and closure costs are capitalized into property, plant and equipment depending on the nature of the asset related to the obligation and amortized over the life of the related asset. The decommissioning provision relates to reclamation and closure costs of the Company’s Cosalá Operations, Galena Complex, and Relief Canyon Mine. The decommissioning provision is estimated at an undiscounted amount of $10.0 million over a period of 5 to 13 years, and discounted using a risk-free rate varying from 0.4% to 7.0%. December 31, December 31, 2020 2019 Provisions, beginning of year $ 7,765 $ 3,791 Acquisition of Pershing Gold - 1,223 Decommissioning costs and change in estimates 348 2,541 Accretion on decommissioning provision 166 210 Provisions, end of year $ 8,279 $ 7,765

Share capital

Share capital	12 Months Ended
	Dec. 31, 2020
Disclosure of classes of share capital [abstract]
Share capital	18. Share capital On April 3, 2019, the Company entered into a subscription agreement with Sandstorm to issue $10 million CAD of the Company’s common shares based on the 5-day volume weighted average price at approximately $2.09 CAD per share, resulting in the issuance of 4,784,689 of the Company’s common shares. On July 26, 2019, the Company closed a non-brokered private placement with Mr. Eric Sprott for gross proceeds of $10 million through issuance of 3,955,454 of the Company’s common shares priced at approximately $3.30 CAD per share. As part of the non-brokered private placement, $0.4 million in transaction costs was incurred and 118,664 warrants were issued to the Company’s advisor where each warrant is exercisable for one common share at an exercise price of $3.37 CAD for a period of three years starting July 25, 2019. On April 16, 2020, the Company closed an at-the-market offering agreement (the “February 2020 ATM Agreement”) for gross proceeds of $15.0 million through issuance of 9,014,953 common shares. As part of the February 2020 ATM Agreement, approximately $0.7 million in transaction costs were incurred and offset against share capital. On May 13, 2020, the Company completed a bought deal public offering of 10,269,500 common shares at a price of $2.80 CAD per common share for aggregate gross proceeds of approximately $20.4 million or $28.75 million CAD, which included the exercise by the underwriters, in full, of the over-allotment option granted by the Company to the underwriters. As part of the bought deal public offering, approximately $1.3 million in transaction costs were incurred and offset against share capital, and 1,000,000 warrants for approximately $0.2 million were issued to the Company’s advisor and offset against share capital where each warrant is exercisable for one common share at an exercise price of $3.50 CAD for a period of two years starting July 9, 2020. On September 4, 2020, the Company completed a bought deal public offering of 10,204,510 common shares at a price of $3.86 CAD per common share for aggregate gross proceeds of approximately $29.8 million or $39.39 million CAD, which included the partial exercise by the underwriters of the over-allotment option granted by the Company to the underwriters. As part of the bought deal public offering, approximately $1.7 million in transaction costs were incurred and offset against share capital. On July 9, 2020, the Company completed the outstanding option acquisition agreement to acquire a 100% interest of the San Felipe property with Hochschild where the Company agreed to issue to Hochschild 1,687,401 of the Company’s common shares with a value equal to the outstanding payment of $3.75 million plus VAT using the 5-day volume-weighted average price on the Toronto Stock Exchange as of the date of the parties’ agreement, subject to adjustment in certain circumstances. On October 8, 2020, the Company issued the 1,687,401 common shares to Hochschild. a. Authorized Authorized share capital consists of an unlimited number of common and preferred shares. December 31, December 31, 2020 2019 Issued 117,975,579 (2019: 86,607,305) common shares $ 350,707 $ 284,512 Nil (2019: 103,824) preferred shares - 161 $ 350,707 $ 284,673 Each non-voting preferred share is convertible, at the holder’s option, without payment of any additional consideration by the holder thereof, initially on a one-to-one basis into common shares, subject to adjustment, and in accordance with the terms of the non-voting preferred shares. b. Stock option plan The number of shares reserved for issuance under the Company’s stock option plan is limited to 10% of the number of common shares which are issued and outstanding on the date of a particular grant of options. Under the plan, the Board of Directors determines the term of a stock option to a maximum of 10 years, the period of time during which the options may vest and become exercisable as well as the option exercise price which shall not be less than the closing price of the Company’s share on the Toronto Stock Exchange on the date immediately preceding the date of grant. The Compensation Committee determines and makes recommendations to the Board of Directors as to the recipients of, and nature and size of, share-based compensation awards in compliance with applicable securities law, stock exchange and other regulatory requirements. A summary of changes in the Company’s outstanding stock options is presented below: December 31, December 31, 2020 2019 Weighted Weighted average average exercise exercise Number price Number price (thousands) CAD (thousands) CAD Balance, beginning of year 8,021 $ 3.29 3,160 $ 3.77 Granted 3,710 3.85 5,915 2.86 Exercised (73 ) 2.60 (1,014 ) 2.33 Expired (999 ) 3.75 (40 ) 2.39 Balance, end of year 10,659 $ 3.45 8,021 $ 3.29 The following table summarizes information on stock options outstanding and exercisable as at December 31, 2020: Weighted average Weighted Weighted remaining average average Exercise contractual exercise exercise price life Outstanding price Exercisable price CAD (years) (thousands) CAD (thousands) CAD $2.00 to $3.00 1.26 3,172 $ 2.39 2,052 $ 2.39 $3.01 to $4.00 3.32 6,092 3.73 2,820 3.68 $4.01 to $5.00 0.19 1,355 4.58 1,355 4.58 $5.01 to $6.00 0.07 40 5.55 40 5.55 10,659 $ 3.45 6,267 $ 3.46 c. Share-based payments The weighted average fair value at grant date of the Company’s stock options granted during the year ended December 31, 2020 was $1.26 (2019: $0.98). The Company used the Black-Scholes Option Pricing Model to estimate fair value using the following weighted-average assumptions: Year ended Year ended December 31, December 31, 2020 2019 Expected stock price volatility (1) 63 % 59 % Risk free interest rate 0.29 % 1.55 % Expected life 3 years 4 years Expected forfeiture rate 2.34 % 2.66 % Expected dividend yield 0 % 0 % Share-based payments included in cost of sales $ - $ - Share-based payments included in general and administrative expenses 3,799 3,314 Total share-based payments $ 3,799 $ 3,314 (1) Expected volatility has been based on historical volatility of the Company’s publicly traded shares. d. Warrants The warrants that are issued and outstanding as at December 31, 2020 are as follows: Number of Exercise Issuance Expiry warrants price (CAD) date date 1,447,426 4.68 Jun 2016 Jun 9, 2021 799,065 4.68 Jul 2016 Jun 14, 2021 1,074,999 3.12 Oct 2018 Oct 1, 2023 15,889 11.32 Apr 2019 May 6, 2022 389,771 2.40 May 2019 May 13, 2022 1,241,200 2.40 May 2019 May 29, 2022 118,664 3.37 Jul 2019 Jul 25, 2022 177,506 4.45 Oct 2019 Oct 30, 2022 1,000,000 3.50 Jul 2020 Jul 9, 2022 6,264,520 e. Restricted Share Units: The Company has a Restricted Share Unit Plan under which eligible directors, officers and key employees of the Company are entitled to receive awards of restricted share units. Each restricted share unit is equivalent in value to the fair market value of a common share of the Company on the date of grant with the value of each cash settled award charged to compensation expense over the period of vesting. At each reporting date, the compensation expense and associated liability (which is included in trade and other long-term liabilities in the consolidated statement of financial position) are adjusted to reflect changes in market value. As at December 31, 2020, 276,762 (2019: 89,196) restricted share units are outstanding at an aggregate value of $0.9 million (2019: $0.3 million). f. Deferred Share Units: The Company has a Deferred Share Unit Plan under which eligible directors of the Company receive awards of deferred share units on a quarterly basis as payment for 20% of their director fees earned. Deferred share units are settled in either cash or common shares at the Company’s discretion when the director leaves the Company’s Board of Directors. The Company recognizes a cost in director fees and a corresponding increase in equity reserve upon issuance of deferred share units. As at December 31, 2020, 519,803 (2019: 323,333) deferred share units are issued and outstanding.

Weighted average basic and dilu

Weighted average basic and diluted number of common shares outstanding	12 Months Ended
	Dec. 31, 2020
Weighted average basic and diluted number of common shares outstanding [abstract]
Weighted average basic and diluted number of common shares outstanding	19. Weighted average basic and diluted number of common shares outstanding Year ended Year ended December 31, December 31, 2020 2019 Basic weighted average number of shares 103,941,184 71,421,798 Effect of dilutive stock options and warrants - - Diluted weighted average number of shares 103,941,184 71,421,798 Diluted weighted average number of common shares for the year ended December 31, 2020 excludes nil anti-dilutive preferred shares (2019: 103,824), 10,658,957 anti-dilutive stock options (2019: 8,020,790) and 6,264,520 anti-dilutive warrants (2019: 5,264,520).

Non-controlling interests

Non-controlling interests	12 Months Ended
	Dec. 31, 2020
Non-controlling Interests
Non-controlling interests	20. Non-controlling interests The Company entered into a joint venture agreement with Mr. Eric Sprott effective October 1, 2019 for 40% non-controlling interest of the Company’s Galena Complex with initial contribution of $15 million to fund capital improvements and operations. Mr. Eric Sprott committed to contributing additional funds to support the ongoing operations alongside the Company in proportion of their respective ownership up to $5 million for the first year of operations with the Company contributing any potential excess as necessary. After the first year, contributions revert to the proportional percentage of ownership interests to fund capital projects and operations. The Company recognized non-controlling interests of $14.3 million equal to the proportionate non-controlling interests’ carrying amount of the Galena Complex at initial recognition classified as a separate component of equity. Subsequent contributions and proportionate share changes in equity are recognized to the carrying amount of the non-controlling interests.

Revenue

Revenue	12 Months Ended
	Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [abstract]
Revenue	21. Revenue The following is a disaggregation of revenue categorized by commodities sold: Year ended Year ended December 31, December 31, 2020 2019 Silver Provisional sales revenue $ 19,212 $ 21,246 Derivative pricing adjustments 370 179 19,582 21,425 Zinc Provisional sales revenue $ 3,078 $ 48,309 Derivative pricing adjustments (1,094 ) (1,939 ) 1,984 46,370 Lead Provisional sales revenue $ 16,142 $ 26,061 Derivative pricing adjustments (400 ) (550 ) 15,742 25,511 Other by-products Provisional sales revenue $ 15 $ 597 Derivative pricing adjustments 71 (238 ) 86 359 Total provisional sales revenue $ 38,447 $ 96,213 Total derivative pricing adjustments (1,053 ) (2,548 ) Gross revenue $ 37,394 $ 93,665 Treatment and selling costs (9,511 ) (35,255 ) $ 27,883 $ 58,410 Derivative pricing adjustments represent subsequent variations in revenue recognized as an embedded derivative from contracts with customers and are accounted for as financial instruments (see Note 26). Revenue from contracts with customers is recognized net of treatment and selling costs if payment of those amounts is enforced at the time of sale.

Cost of sales

Cost of sales	12 Months Ended
	Dec. 31, 2020
Non-controlling Interests
Cost of sales	22. Cost of sales Cost of sales is costs that directly relate to production at the mine operating segments and excludes depletion and amortization. The following are components of cost of sales: Year ended Year ended December 31, December 31, 2020 2019 Salaries and employee benefits $ 19,941 $ 27,150 Raw materials and consumables 6,953 22,144 Utilities 3,109 5,336 Other costs 2,146 2,456 Changes in inventories (910 ) (362 ) $ 31,239 $ 56,724

Corporate general and administr

Corporate general and administrative expenses	12 Months Ended
	Dec. 31, 2020
Corporate general and administrative expenses [abstract]
Corporate general and administrative expenses	23. Corporate general and administrative expenses Corporate general and administrative expenses are costs incurred at corporate and other segments that do not directly relate to production. The following are components of corporate general and administrative expenses: Year ended Year ended December 31, December 31, 2020 2019 Salaries and employee benefits $ 2,456 $ 2,847 Directors’ fees 366 379 Share-based payments 4,028 3,671 Professional fees 788 809 Office and general 1,496 2,005 $ 9,134 $ 9,711

Income taxes

Income taxes	12 Months Ended
	Dec. 31, 2020
Income Taxes [abstract]
Income taxes	24. Income taxes The components of income tax expense are as follows: Year ended Year ended December 31, December 31, 2020 2019 Current income tax expense $ 30 $ 1,659 Deferred income tax expense (recovery) (1,032 ) 299 Income tax expense (recovery) $ (1,002 ) $ 1,958 The Company’s effective rate of income tax differs from the statutory rate of 26.5% as follows: Year ended Year ended December 31, December 31, 2020 2019 Tax recovery at statutory rates $ (8,233 ) $ (8,555 ) Mexican mining royalty (587 ) 128 Impact of foreign tax rates (230 ) (388 ) Non-deductible expenses 2,610 2,741 Losses not recognized 5,438 8,032 Income tax expense (recovery) $ (1,002 ) $ 1,958 The Company’s net deferred tax asset relates to the U.S. alternative minimum tax credits available: December 31, December 31, 2020 2019 Alternative minimum tax credits $ - $ 343 Provisions and reserves - 2,101 Net operating losses 6,792 4,230 Total deferred tax assets 6,792 6,674 Property, plant and equipment (6,792 ) (6,331 ) Net deferred tax assets $ - $ 343 The Company’s net deferred tax liability relates to the Mexican mining royalty and arises principally from the following: December 31, December 31, 2020 2019 Property, plant and equipment $ 850 $ 851 Other - 329 Total deferred tax liabilities 850 1,180 Provisions and reserves (391 ) (430 ) Net deferred tax liabilities $ 459 $ 750 Deferred income taxes have not been recognized in respect of the following deductible temporary differences, as management does not consider their utilization to be probable for the foreseeable future: December 31, December 31, 2020 2019 Property, plant and equipment $ 18,360 $ 19,288 Mexican tax losses (expiring in 2023 - 2030) 37,897 25,599 Canadian tax losses (expiring in 2027 - 2040) 23,999 19,051 U.S. tax losses (expiring in 2021 - 2038) 31,956 31,956 U.S. tax losses (no expiry) 21,953 20,779 Provisions and other 49,959 29,207 Deferred Mexican mining royalty 459 750 $ 184,583 $ 146,630

Key management transactions

Key management transactions	12 Months Ended
	Dec. 31, 2020
Disclosure of transactions between related parties [abstract]
Key management transactions	25. Key management transactions Remuneration to directors and key management who have the authority and responsibility for planning, directing and continuing the activities of the Company: Year ended Year ended December 31, December 31, 2020 2019 Salaries and benefits $ 1,269 $ 1,565 Directors’ fees 366 379 Share-based payments 3,132 3,163

Financial risk management

Financial risk management	12 Months Ended
	Dec. 31, 2020
Financial risk management [abstract]
Financial risk management	26. Financial risk management a. Financial risk factors The Company’s risk exposures and the impact on its financial instruments are summarized below: (i) Credit risk is the risk of loss associated with a counterparty’s inability to fulfill its payment obligations. The Company’s credit risk is primarily attributable to cash and cash equivalents and trade and other receivables. The credit risk on cash and cash equivalents is limited because the Company invests its cash in deposits with well-capitalized financial institutions with strong credit ratings in Canada and the United States. Under current concentrate offtake agreements, risk on trade receivables related to concentrate sales is managed by receiving payments for 85% to 100% of the estimated value of the concentrate within one month following the time of shipment. As of December 31, 2020, the Company’s exposure to credit risk with respect to trade receivables amounts to $2.8 million (2019: $4.6 million). The Company believes credit risk is not significant and no provision for expected credit losses was recorded as at December 31, 2020 and 2019. (ii) Liquidity risk is the risk that the Company will not be able to meet its financial obligations as they arise. The Company’s approach to managing liquidity risk is to ensure that it will have sufficient liquidity to meet liabilities when due. The Company’s liquidity requirements are met through a variety of sources, including cash, cash generated from operations (including Relief Canyon Mine upon reaching commercial production), credit facilities and debt and equity capital markets. The Company’s trade payables have contractual maturities of less than 30 days and are subject to normal trade terms. The following table presents the contractual maturities of the Company’s financial liabilities on an undiscounted basis: December 31, 2020 Less than Over 5 Total 1 year 2-3 years 4-5 years years Trade and other payables $ 21,131 $ 21,131 $ - $ - $ - Glencore pre-payment facility 2,862 2,862 - - - Convertible debenture 10,000 - 10,000 - - Interest on convertible debenture 1,353 600 753 - - Promissory note 5,000 - 5,000 - - Interest on promissory note 511 356 155 - - Government loan 4,499 947 3,552 - - Loan payable 6,025 6,025 - - - Projected pension contributions 6,480 2,228 2,120 1,699 433 Decommissioning provision 10,029 - - - 10,029 Other long-term liabilities 4,619 - 4,068 22 529 $ 72,509 $ 34,149 $ 25,648 $ 1,721 $ 10,991 Minimum lease payments in respect to lease liabilities are included in trade and other payables and other long-term liabilities as follows: December 31, 2020 Less than Over 5 Total 1 year 2-3 years 4-5 years years Trade and other payables $ 2,667 $ 2,667 $ - $ - $ - Other long-term liabilities 3,710 - 3,688 22 - $ 6,377 $ 2,667 $ 3,688 $ 22 $ - The following table summarizes the continuity of the Company’s total lease liabilities discounted using an incremental borrowing rate ranging from 5% to 12% applied during the year: December 31, December 31, 2020 2019 Lease liabilities, beginning of year $ 7,025 $ 270 IFRS 16 adoption - 527 Additions 1,962 6,478 Lease principal payments (2,594 ) (234 ) Lease interest payments (759 ) (50 ) Accretion on lease liabilities 743 34 Lease liabilities, end of year $ 6,377 $ 7,025 (iii) Market risk is the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market prices. Market risk comprises three types of risk: interest rate risk, currency risk and price risk. (1) Interest rate risk The Company is subject to the interest rate risk of U.S. LIBOR rate plus 5% per annum from the existing Pre-Payment Facility. Interest rates of other financial instruments are fixed. (2) Currency risk As at December 31, 2020, the Company is exposed to foreign currency risk through financial assets and liabilities denominated in CAD and Mexican pesos (“MXP”): Financial instruments that may impact the Company’s net loss or other comprehensive loss due to currency fluctuations include CAD and MXP denominated assets and liabilities which are included in the following table: As at December 31, 2020 CAD MXP Cash and cash equivalents $ 573 $ 103 Trade and other receivables 36 2,297 Trade and other payables 2,513 5,816 As at December 31, 2020, the CAD/USD and MXP/USD exchange rates were 1.27 and 19.95 respectively. The sensitivity of the Company’s net loss and comprehensive loss due to changes in the exchange rates for the year ended December 31, 2020 is included in the following table: CAD/USD MXP/USD Exchange rate Exchange rate +/- 10 % +/- 10 % Approximate impact on: Net loss $ 945 $ 697 Other comprehensive loss (47 ) 32 The Company may, from time to time, employ derivative financial instruments to manage exposure to fluctuations in foreign currency exchange rates. At December 31, 2020, the Company does not have any non-hedge foreign exchange forward contracts outstanding (2019: 26.0 million MXP at average exchange rate of 19.81 MXP/USD with unrealized gain of $0.1 million recorded through profit and loss during the year ended December 31, 2019). The Company settled non-hedge foreign exchange forward contracts to buy approximately 26.0 million MXP and recorded a realized gain of nil through profit or loss during the year ended December 31, 2020 (2019: realized gain of $0.4 million). (3) Price risk Price risk is the risk that the fair value or future cash flows of a financial instrument will fluctuate because of changes in market prices (other than those arising from interest rate risk or currency risk), whether those changes are caused by factors specific to the individual financial instrument or its issuer, or factors affecting all similar financial instruments in the market. As at December 31, 2020, the Company had certain amounts related to the sales of concentrates that have only been provisionally priced. A ±10% fluctuation in silver, zinc, lead, copper and gold prices would affect trade receivables by approximately $0.3 million (2019: $0.5 million). At December 31, 2020, the Company does not have any non-hedge commodity forward contracts outstanding (2019: 1.6 million and 3.3 million pounds of zinc and lead, respectively, at average price of $1.20 and $0.95 per pound, respectively, with unrealized gain of $0.5 million recorded through profit or loss during the year ended December 31, 2019). The Company settled non-hedge commodity forward contracts for approximately 1.6 million and 3.3 million pounds of zinc and lead, respectively, and recorded a realized gain of nil through profit or loss during the year ended December 31, 2020 (2019: realized gain of $1.0 million). Net amount of gain or loss on derivative instruments from non-hedge foreign exchange and commodity forward contracts recognized through profit or loss during the year ended December 31, 2020 was nil (2019: gain of $2.0 million). Total amount of gain or loss on derivative instruments including those recognized through profit or loss from the Company’s Convertible Debenture during the year ended December 31, 2020 was loss of $0.2 million (2019: loss of $2.5 million). b. Fair values The fair value of cash, restricted cash, trade and other payables, and other long-term liabilities approximate their carrying amounts. The methods and assumptions used in estimating the fair value of other financial assets and liabilities are as follows: ● Cash and cash equivalents: The fair value of cash equivalents is valued using quoted market prices in active markets. The Company’s cash equivalents consist of money market accounts held at financial institutions which have original maturities of less than 90 days. ● Trade and other receivables: The fair value of trade receivables from silver sales contracts that contain provisional pricing terms is determined using the appropriate quoted forward price from the exchange that is the principal active market for the particular metal. As such, there is an embedded derivative feature within trade receivables. ● Convertible debenture, promissory note, and loan payable: The principal portion of the Convertible Debenture, Promissory Note, and Loan Payable are carried at amortized cost. ● Embedded derivatives: Revenues from the sale of metals produced since the commencement of commercial production are based on provisional prices at the time of shipment. Variations between the price recorded at the time of sale and the actual final price received from the customer are caused by changes in market prices for metals sold and result in an embedded derivative in revenues and accounts receivable. ● Derivatives: The Company uses derivative and non-derivative instruments to manage financial risks, including commodity, interest rate, and foreign exchange risks. The use of derivative contracts is governed by documented risk management policies and approved limits. The Company does not use derivatives for speculative purposes. The fair value of the Company’s derivative instruments is based on quoted market prices for similar instruments and at market prices at the valuation date. The fair value hierarchy establishes three levels to classify the inputs to valuation techniques used to measure fair value: ● Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. ● Level 2 inputs are quoted prices in markets that are not active, quoted prices for similar assets or liabilities in active markets, inputs other than quoted prices that are observable for the asset or liability (for example, interest rate and yield curves observable at commonly quoted intervals, forward pricing curves used to value currency and commodity contracts and volatility measurements used to value option contracts), or inputs that are derived principally from or corroborated by observable market data or other means. ● Level 3 inputs are unobservable (supported by little or no market activity). December 31, December 31, 2020 2019 Level 1 Cash and cash equivalents $ 4,705 $ 19,998 Restricted cash 4,082 4,007 Level 2 Trade and other receivables 5,102 5,269 Derivative instruments 4,568 3,855 Loan payable 5,564 - Glencore pre-payment facility 2,862 5,602 Convertible debenture 9,953 9,935 Promissory note 5,000 - Government loan 4,499 -

Segmented and geographic inform

Segmented and geographic information, and major customers	12 Months Ended
	Dec. 31, 2020
Disclosure of operating segments [abstract]
Segmented and geographic information, and major customers	27. Segmented and geographic information, and major customers a. Segmented information The Company’s operations comprise of four reporting segments engaged in acquisition, exploration, development and exploration of mineral resource properties in Mexico and the United States. Management has determined the operating segments based on the reports reviewed by the chief operating decision makers that are used to make strategic decisions. b. Geographic information All revenues from sales of concentrates for the year ended December 31, 2020 and 2019 were earned in Mexico and the United States. The following segmented information is presented as at and during years ended December 31, 2020 and 2019. The Cosalá Operations segment operates in Mexico while the Galena Complex and Relief Canyon segments operate in the United States. As at December 31, 2020 As at December 31, 2019 Cosalá Operations Galena Complex Relief Canyon Corporate and Other Total Cosalá Operations Galena Complex Relief Canyon Corporate and Other Total Cash and cash equivalents $ 133 $ 1,257 $ 52 $ 3,263 $ 4,705 $ 2,903 $ 14,761 $ 770 $ 1,564 $ 19,998 Trade and other receivables 2,297 2,769 - 36 5,102 3,852 1,374 - 43 5,269 Inventories 6,346 3,062 - - 9,408 6,361 2,137 - - 8,498 Prepaid expenses 428 832 650 290 2,200 615 524 471 304 1,914 Derivative instruments - - - - - - - - 585 585 Restricted cash 137 53 3,892 - 4,082 145 55 3,807 - 4,007 Property, plant and equipment 58,029 53,701 147,183 406 259,319 56,094 47,672 86,201 422 190,389 Deferred tax assets - - - - - - 343 - - 343 Total assets $ 67,370 $ 61,674 $ 151,777 $ 3,995 $ 284,816 $ 69,970 $ 66,866 $ 91,249 $ 2,918 $ 231,003 Trade and other payables $ 6,627 $ 5,096 $ 6,152 $ 3,256 $ 21,131 $ 9,241 $ 3,805 $ 6,506 $ 3,157 $ 22,709 Derivative instruments - - - 4,568 4,568 - - - 4,440 4,440 Loan payable - - - 5,564 5,564 - - - - - Glencore pre-payment facility 2,862 - - - 2,862 5,602 - - - 5,602 Other long-term liabilities - 529 3,557 533 4,619 - 566 4,495 584 5,645 Deferred revenue - - - 23,322 23,322 - - - 25,007 25,007 Convertible debenture - - - 9,953 9,953 - - - 9,935 9,935 Promissory note 5,000 5,000 - - - - - Government loan - 4,499 - - 4,499 - - - - - Post-employment benefit obligations - 13,398 - - 13,398 - 10,137 - - 10,137 Decommissioning provision 2,130 2,365 3,784 - 8,279 1,854 2,156 3,755 - 7,765 Deferred tax liabilities 459 - - - 459 750 - - - 750 Total liabilities $ 12,078 $ 25,887 $ 13,493 $ 52,196 $ 103,654 $ 17,447 $ 16,664 $ 14,756 $ 43,123 $ 91,990 Year ended December 31, 2020 Year ended December 31, 2019 Cosalá Operations Galena Complex Relief Canyon Corporate and Other Total Cosalá Operations Galena Complex Relief Canyon Corporate and Other Total Revenue $ 1,424 $ 26,459 $ - $ - $ 27,883 $ 39,620 $ 18,790 $ - $ - $ 58,410 Cost of sales (1,816 ) (29,423 ) - - (31,239 ) (27,642 ) (29,082 ) - - (56,724 ) Depletion and amortization (2,224 ) (5,415 ) (194 ) (140 ) (7,973 ) (9,448 ) (3,599 ) (164 ) (127 ) (13,338 ) Care and maintenance costs (5,501 ) (446 ) - - (5,947 ) (39 ) (399 ) - - (438 ) Corporate general and administrative - - - (9,134 ) (9,134 ) - - - (9,711 ) (9,711 ) Transaction costs - - - (23 ) (23 ) - - - (3,467 ) (3,467 ) Exploration costs (379 ) (3,697 ) (563 ) - (4,639 ) (1,132 ) (705 ) (715 ) - (2,552 ) Accretion on decommissioning provision (106 ) (21 ) (39 ) - (166 ) (148 ) (40 ) (22 ) - (210 ) Interest and financing income (expense) (243 ) - 84 (94 ) (253 ) (625 ) 15 19 (1,199 ) (1,790 ) Foreign exchange gain (loss) 189 - - 357 546 (289 ) - - 238 (51 ) Gain on disposal of assets - 37 - - 37 - - - - - Loss on derivative instruments - - - (160 ) (160 ) - - - (2,457 ) (2,457 ) Gain on derivative warrant liability - - - - - - - - 46 46 Income (loss) before income taxes (8,656 ) (12,506 ) (712 ) (9,194 ) (31,068 ) 297 (15,020 ) (882 ) (16,677 ) (32,282 ) Income tax recovery (expense) 470 741 - (209 ) 1,002 (1,277 ) (681 ) - - (1,958 ) Net loss for the year $ (8,186 ) $ (11,765 ) $ (712 ) $ (9,403 ) $ (30,066 ) $ (980 ) $ (15,701 ) $ (882 ) $ (16,677 ) $ (34,240 ) c. Major customers The Company sold concentrates to one customer during the year ended December 31, 2020 (2019: one customer) accounting for 100% (2019: 100%) of revenues.

Capital management

Capital management	12 Months Ended
	Dec. 31, 2020
Disclosure of objectives, policies and processes for managing capital [abstract]
Capital management	28. Capital management Capital is defined as equity. The Company’s objectives when managing its capital are to safeguard its ability to continue as a going concern and to maximize the value for its shareholders. The Company’s activities have been funded so far through debt and equity financing based on cash needs, and through operations. The Company typically sells its shares by way of private placement. There were no changes in these objectives, policies and processes used to manage capital during the year. The Company manages its capital structure and determines its capital requirements in light of the changing economic conditions and the risk characteristics of its assets. To reach its objectives the Company may have to maintain or adjust its capital structure by issuing new share capital or new debt. At this stage of its development, it is the policy of the Company to preserve cash to fund its operations and complete its capital projects and not to pay dividends. As of December 31, 2020, and 2019, the Company is not subject to any externally imposed capital requirements. The following summarizes the Company’s capital structure: December 31, December 31, 2020 2019 Equity attributable to shareholders of the Company $ 169,674 $ 126,291

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2020
Disclosure of contingent liabilities [abstract]
Contingencies	29. Contingencies Due to the size, complexity and nature of the Company’s operations, various legal and tax matters arise in the ordinary course of business. The Company accrues for such items when a liability is both probable and the amount can be reasonably estimated. In November 2010, the Company received a reassessment from the Mexican tax authorities related to its Mexican subsidiary, Minera Cosalá, for the year ended December 31, 2007. The tax authorities disallowed the deduction of transactions with certain suppliers for an amount of approximately $9.9 million (MXP 196.8 million), of which $4.2 million (MXP 84.4 million) would be applied against available tax losses. The Company appealed this reassessment and the Mexican tax authorities subsequently reversed $4.7 million (MXP 94.6 million) of their original reassessment. The remaining $5.1 million (MXP 102.2 million) consists of $4.2 million (MXP 84.4 million) related to transactions with certain suppliers and $0.9 million (MXP 17.8 million) of value added taxes thereon. The Company appealed the remaining reassessment with the Mexican Tax Court in December 2011. The Company may be required to post a bond of approximately $0.9 million (MXP 17.8 million) to secure the value added tax portion of the reassessment. The deductions of $4.2 million (MXP 84.4 million), if denied, would be offset by available tax losses. The Company accrued $1.0 million (MXP 19.9 million) in the consolidated financial statements as at December 31, 2018 as a probable obligation for the disallowance of value added taxes related to the Mexican tax reassessment. As at December 31, 2020, the accrued liability of the probable obligation was $1.0 million (2019: $1.0 million).

Subsequent events

Subsequent events	12 Months Ended
	Dec. 31, 2020
Disclosure of non-adjusting events after reporting period [abstract]
Subsequent events	30. Subsequent events The Company declared commercial production of the Relief Canyon Mine effective January 11, 2021. Certain amounts included in non-producing properties will be reclassified to inventories, mining interests, and plant and equipment in the first quarter of 2021. On January 29, 2021, the Company completed a bought deal public offering of 10,253,128 common shares at a price of $3.31 CAD per common share for aggregate gross proceeds of approximately $26.7 million or $33.94 million CAD, which included the partial exercise by the underwriters of the over-allotment option granted by the Company to the underwriters. On February 1, 2021, Sandstorm converted $5 million of the principal amount of the Company’s $10 million outstanding Convertible Debenture into an aggregate of 2,336,448 common shares at a conversion price of $2.14. On March 3, 2021, Sandstorm converted the remaining $5 million of the principal amount of the outstanding Convertible Debenture into an aggregate of 2,336,448 common shares at the same conversion price. On March 2, 2021, the Company amended its remaining Loan Payable with Macquarie to be settled through monthly fixed cash payments totaling $2.9 million payable over a 6-month period commencing March 2021, among other terms.

Summary of significant accoun_2

Summary of significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2020
Summary of significant accounting policies [abstract]
Consolidation	a. Consolidation These consolidated financial statements incorporate the financial statements of the Company and the entities controlled by the Company (its subsidiaries, including special purpose entities). Control exists when the Company has the power, directly or indirectly, to govern the financial and operating policies of an entity so as to obtain benefits from its activities. The financial statements of subsidiaries are included in the consolidated financial statements from the date that control commences until the date that control ceases. Where the Company’s interest in a subsidiary is less than 100%, the Company recognizes non-controlling interests. All intercompany transactions and balances, income and expenses have been eliminated. The Company applies the acquisition method to account for business combinations. Identifiable assets acquired and liabilities and contingent liabilities assumed in a business combination are measured initially at their fair values at the acquisition date. The Company elects on an acquisition-by-acquisition basis whether to measure non-controlling interest at its fair value, or at its proportionate share of the recognized amount of identifiable net assets. Acquisition-related costs are expensed as incurred. Goodwill is initially measured as the excess of the aggregate of the consideration transferred and the fair value of non-controlling interest over the net identifiable assets acquired and liabilities assumed. If this consideration is negative, a bargain purchase gain is recognized immediately in profit or loss. Special Purpose Entities (“SPE’s”) as defined by the IASB in SIC 12 Consolidation–Special Purpose Entities
Segment reporting	b. Segment reporting An operating segment is a component of the Company that engages in business activities from which it may earn revenues and incur expenses, including revenues and expenses that relate to transactions with any of the Company’s other components. Determination of operating segments are based on the reports reviewed by the chief operating decision makers that are used to make strategic decisions about resources to be allocated to the segment and performance assessment, and for which discrete financial information is available. Unallocated items not directly attributable to a segment comprise mainly of corporate assets and head office expenses.
Presentation currency and functional currency	c. Presentation currency and functional currency The Company’s presentation currency is the U.S. dollar (“USD”). The functional currency of the Company’s Canadian subsidiaries is the Canadian dollar (“CAD”), and the functional currency of its U.S. and Mexican subsidiaries and SPE’s is the USD. The consolidated financial statements of the Company are translated into the presentation currency. Assets and liabilities have been translated using the exchange rate at period end, and income, expenses and cash flow items are translated using the rate that approximates the exchange rates at the dates of the transactions (the average rate for the period). All resulting exchange differences are recorded in the foreign currency translation reserve.
Foreign currency translations	d. Foreign currency translations Transactions in foreign currencies are translated into the entities’ functional currency at the exchange rate at the date of the transactions. Monetary assets and liabilities of the Company’s operations denominated in a currency other than the functional currency are translated at the rate in effect at the statement of financial position date, and non-monetary items at historic exchange rates at each transaction date. Revenue and expense items are translated at average exchange rates of the reporting period. Gains and losses on translation are charged to the statements of loss and comprehensive loss.
Revenue recognition	e. Revenue recognition The Company applies the following five-step approach in recognizing revenue from contracts with customers: • Identify the enforceable contract with the customer • Identify the separate performance obligations in the contract from transferring the distinct good or service • Determine the transaction price for consideration of transferring the good or service • Allocate the transaction price to the separate performance obligations identified • Recognize revenue when each separate performance obligation is satisfied The Company recognizes revenue through entering into concentrate sales contracts with customers with the performance obligation of delivering its concentrate production in exchange for consideration valued initially under provisional pricing arrangements. Revenue from sales is recorded at the time of delivery based on forward prices for the expected date of final settlement. The final sale prices are determined by quoted market prices in a period subsequent to the date of sale. In these circumstances. Subsequent variations in metal prices are recognized as embedded derivative pricing adjustments at fair value from contracts with customers. The Company recognizes deferred revenue from advanced consideration received for fixed and variable precious metals deliveries over a specified period. Deferred revenue is recognized into revenue as performance obligations to metals delivery are satisfied over the term of the delivery contract.
Defined benefit plans	f. Defined benefit plans The cost of defined benefit plans is determined using the projected unit credit method. The related pension liability recognized in the consolidated statement of financial position is the present value of the defined benefit obligation at the end of the reporting period less the fair value of plan assets. Actuarial valuations for defined benefit plans are carried out annually. The discount rate applied in arriving at the present value of the pension liability represents the yield on high quality corporate bonds denominated in the currency in which the benefits will be paid, and that have terms to maturity approximating the terms of the related pension liability. Actuarial gains and losses arise from the difference between the actual long-term rate of return on plan assets for a period and the expected long-term rate of return on plan assets for that period, or from changes in actuarial assumptions used to determine the accrued benefit obligation. Actuarial gains and losses arising in the year are recognized in full in the period in which they occur, in other comprehensive income and retained earnings without recycling to the consolidated statement of loss and comprehensive loss in subsequent periods. Current service cost, the recognized element of any past service cost, interest expense arising on the pension liability and the expected return on plan assets are recognized in the same line items in the consolidated statement of loss and comprehensive loss as the related compensation cost. The values attributed to plan liabilities are assessed in accordance with the advice of independent qualified actuaries. Service costs arising from plan amendments are recognized immediately.
Share-based payments	g. Share-based payments The Company’s stock option plan allows its employees (including directors and officers) and non-employees to acquire shares of the Company. Accordingly, the fair value of the option is either charged to operations or capitalized to exploration or development expenditures, depending on the accounting for the optionee’s other compensation, with a corresponding increase in equity reserve. The costs of equity-settled transactions with employees are measured by reference to the fair value at the date on which they are granted using the Black-Scholes Option Pricing Model. The costs of equity-settled transactions are recognized, together with a corresponding increase in equity reserve, over the period in which the performance and/or service conditions are fulfilled, ending on the date on which the relevant employees become fully entitled to the award (the “vesting date”). The cumulative expense recognized for equity-settled transactions at each reporting date up to the vesting date reflects the Company’s best estimate of the number of equity instruments that will ultimately vest. The charge or credit for a period represents the movement in cumulative expense recognized as at the beginning and end of that period and the corresponding amount is represented in equity reserve. No expense is recognized for awards that do not ultimately vest. Where the terms of an equity-settled award are modified, the minimum expense recognized is the expense as if the terms had not been modified. An additional expense is recognized for any modification which increases the total fair value of the share-based payment arrangement, or is otherwise beneficial to the employee as measured at the date of modification.
Income taxes	h. Income taxes Income tax comprises of current and deferred tax. Income tax is recognized in the consolidated statement of loss and comprehensive loss except to the extent that it relates to items recognized directly in other comprehensive income (loss) or directly in equity, in which case the income tax is also recognized directly in other comprehensive income (loss) or equity, respectively. The current income tax charge is calculated on the basis of the tax laws enacted or substantively enacted at the end of the reporting period in the countries where the Company’s subsidiaries operate and generate taxable profit. Management periodically evaluates positions taken in tax returns with respect to situations in which applicable tax regulation is subject to interpretation. It establishes provisions where appropriate on the basis of amounts expected to be paid to the tax authorities. Deferred income tax is recognized in respect of temporary differences between the carrying amount of assets and liabilities in the consolidated statement of financial position and the corresponding tax bases used in the computation of taxable profit. Deferred income tax is determined using tax rates (and laws) that have been enacted or substantively enacted at the consolidated statement of financial position date and are expected to apply when the related deferred income tax asset is realized or the deferred income tax liability is settled. Deferred income tax assets are recognized for all deductible temporary differences, carry-forward of unused tax credits and unused tax losses to the extent it is probable future taxable profits will be available against which they can be utilized. The Company did not recognize any deferred income taxes relating to its investments in subsidiaries. Deferred tax assets and liabilities are offset where they relate to income taxes levied by the same taxation authority and the Company has the legal right and intent to offset.
Earnings/loss per share	i. Earnings/loss per share Basic earnings/loss per share is calculated by dividing the net earnings/loss for the period attributable to equity owners of the Company by the weighted average number of common shares outstanding during the period. Diluted earnings/loss per share is calculated by adjusting the weighted average number of common shares outstanding for dilutive instruments. The number of shares included with respect to options, warrants and similar instruments is computed using the treasury stock method. The treasury stock method, which assumes that outstanding stock options and warrants with an average exercise price below the market price of the underlying shares, are exercised and the assumed proceeds are used to repurchase common shares of the Company at the average market price of the common shares for the period. The Company’s potentially dilutive common shares comprise stock options granted to employees, and warrants.
Comprehensive income (loss)	j. Comprehensive income (loss) Comprehensive income (loss) is the change in the Company’s net assets that results from transactions, events and circumstances from sources other than the Company’s shareholders and includes items that would not normally be included in net earnings such as foreign currency gains or losses related to the Company’s net investment in foreign operations and unrealized gains or losses on available-for-sale securities net of tax. The Company’s comprehensive income (loss), components of other comprehensive income (loss) and cumulative translation adjustments are presented in the consolidated statements of comprehensive income (loss) and the consolidated statements of changes in equity.
Inventories	k. Inventories Concentrates, ore stockpile, and spare parts and supplies are valued at the lower of cost and estimated net realizable value. Cost for concentrates and ore stockpile includes all direct costs incurred in production including direct labour and materials, freight, depreciation and amortization and directly attributable overhead costs determined on a weighted average basis for the Mexican operations and first in, first out method for the U.S. operations. Cost for spare parts and supplies are determined using the first in, first out method. Net realizable value is calculated as the estimated price at the time of sale based on prevailing and future metal prices less estimated future production costs to convert inventories into saleable form. Any write-downs of inventory to net realizable value are recorded as cost of sales. If there is a subsequent increase in the value of inventories, the previous write-downs to net realizable value are reversed to the extent that the related inventory has not been sold. Ore stockpile represents ore that has been extracted from the mine and is available for further processing. Costs added to ore stockpile are valued based on current mining cost per tonne incurred up to the point of stockpiling the ore and are removed at the average cost per tonne. Ore stockpile is verified by periodic surveys. Materials and supplies inventory are valued at the lower of cost and net realizable value, where cost is determined using the first-in-first-out method. Any provision for obsolescence is determined by reference to specific items of stock. A regular review is undertaken to determine the extent of any provision for obsolescence by comparing those items to their net realizable value. If carrying value exceeds net realizable value, a write-down is recognized.
Investments	l. Investments An associate is an entity over which the Company has significant influence and that is neither a subsidiary nor an interest in a joint venture. Significant influence is the power to participate in the financial and operating policy decisions of the investee but is not control or joint control over those policies. Investments in companies over which the Company exercises neither control nor significant influence and are designated as financial assets at fair value through other comprehensive income. Related unrealized gains (losses) are recognized in other comprehensive income (loss), unless the decrease in value is significant or prolonged, in which case the loss is recorded in the statements of loss and comprehensive loss.
Property, plant and equipment	m. Property, plant and equipment (i) Producing mining interests are carried at cost less accumulated depletion and amortization and accumulated impairment losses. Following the completion of commissioning, the costs related to the mining interests are depleted and charged to operations on the unit of production method as a proportion of estimated recoverable mineral reserves. Completion of the commissioning is deemed to have occurred when major mine and processing plant components are completed, operating results are being achieved consistently for a period of time and that there are indicators that these operational results, including mill capacity and recovery, will be sustainable in the future. Construction in progress is not depreciated until the assets are ready for their intended use. (ii) The Company follows the method of accounting for its non-producing mining interests whereby all costs, net of incidental revenues, relating to the acquisition and development are deferred and capitalized by property until the property to which they directly relate is placed into production, sold, discontinued or subject to a condition of impairment. Exploration expenses not related to placing the property into production are expensed as incurred. In the event that a mining interest is placed into production, capitalization of costs ceases, the costs are transferred to producing mining interests and the mining interest is depleted on a unit of production basis. The recoverability of amounts is dependent upon the discovery of economically recoverable mineral reserves, the ability of the Company to finance the development of the properties, and on the future profitable production or proceeds from the disposition thereof. (iii) Property, plant and equipment are carried at cost less accumulated depreciation and accumulated impairment losses. When parts of an item of property, plant and equipment have different useful lives, they are accounted for as separate assets (major components) of property, plant and equipment. The cost of replacing a part of an item of property, plant and equipment is recognized in the carrying amount of the item if it is probable that the future economic benefits embodied within that part will flow to the Company, and its cost can be measured reliably. The carrying amount of the replaced part is derecognized. Repairs and maintenance are charged to the consolidated statement of loss and comprehensive loss during the period in which they are incurred. Depreciation is recorded over the estimated useful life of the asset as follows: • Mining interests – unit of production based upon estimated proven and probable reserves • Plant and equipment – 3-30 years over straight line basis • Corporate office equipment – 3-10 years over straight line basis Residual values, method of amortization and useful lives of the assets are reviewed annually and adjusted if appropriate. (iv) The Company reviews and evaluates the carrying values of its tangible and intangible assets to determine whether there is an indication of impairment or reversal of impairment. For exploration and evaluation assets, indication includes but is not limited to expiration of the right to explore, substantive expenditure in the specific area is neither budgeted nor planned, and if the entity has decided to discontinue exploration activity in the specific area. When the carrying value of assets exceeds the recoverable amount, the carrying value of the assets is reduced to the recoverable amount. The recoverable amount takes into account a market participant’s ability to generate economic benefits by using the asset in its highest and best use of the asset. To achieve this, the recoverable amount is the higher of value in use (being the net present value of expected pre-tax future cash flows of the relevant asset) and fair value less costs to sell the asset. If, after the Company has previously recognized an impairment loss, circumstances indicate that the recoverable amount of the impaired assets is greater than the carrying amount, the Company reverses the impairment loss by the amount the revised fair value exceeds its carrying amount, to a maximum of the previous impairment loss. In no case shall the revised carrying amount exceed the original carrying amount, after depreciation or amortization, that would have been determined if no impairment loss had been recognized.
Decommissioning provision	n. Decommissioning provision The Company recognizes contractual, statutory and legal obligations associated with retirement of mining properties when those obligations result from the acquisition, construction, development or normal operation of the assets. Initially, the decommissioning provision is recognized at its fair value in the period in which it is incurred. Upon initial recognition of the liability, the corresponding decommissioning provision is added to the carrying amount of that asset and the cost is amortized as an expense over the economic life of the related asset. Following the initial recognition of the decommissioning provision, the periodic unwinding of the discount is recognized in the consolidated statement of loss and comprehensive loss and adjusted for changes to the amount or timing of the underlying cash flows to settle the obligation.
Financial instruments	o. Financial instruments The Company classifies and measures its financial instruments at fair value, with changes in fair value recognized in profit or loss as they arise. Unless restrictive criteria regarding the objective and contractual cash flows of the instrument are met then classification and measurement are at either amortized cost or fair value through other comprehensive income. Cash and cash equivalents and trade and other receivables are classified and measured as financial assets at amortized cost. Embedded derivatives arising from subsequent adjustments in provisional sales revenue are classified and measured as financial instruments at fair value through profit or loss. Trade and other payables are classified and measured as financial liabilities at amortized cost. Loans receivable and payable are classified and measured as financial assets at fair value through profit or loss and as financial liabilities at fair value through profit or loss, respectively. Investment in equity instruments are classified and measured as financial assets at fair value through other comprehensive income. Loans from the government are accounted for as a loan payable until forgiveness is reasonably assured and the loan is derecognized through the consolidated statement of loss and comprehensive loss.
Borrowing costs	p. Borrowing costs Borrowing costs directly attributable to the acquisition, construction or production of a qualifying asset are capitalized as part of the cost of that asset and amortized over the expected useful life of that asset. Other borrowing costs not directly attributable to a qualifying asset are expensed in the period incurred.
Provisions	q. Provisions Provisions are recognized when the Company has a present obligation (legal or constructive) that has arisen as a result of a past event and it is probable that a future outflow of resources will be required to settle the obligation, provided that a reliable estimate can be made of the amount of the obligation. Provisions are measured at the present value of the expenditures expected to be required to settle the obligation using a pre-tax rate that reflects current market assessments of the time value of money and the risk specific to the obligation. The increase in the provision due to passage of time is recognized as interest expense.
Related party transactions	r. Related party transactions Parties are considered to be related if one party has the ability, directly or indirectly, to control the other party or exercise significant influence over the other party in making financial and operating decisions. Parties are also considered to be related if they are subject to common control or common significant influence, and related parties may be individuals or corporate entities. A transaction is considered to be a related party transaction when there is a transfer of resources or obligations between related parties. Related party transactions that are in the normal course of business and have commercial substance are measured at the exchange amount.
Restricted cash	s. Restricted cash Restricted cash includes cash that has been pledged for reclamation and closure activities which are not available for immediate disbursement.

Acquisition of Pershing Gold _2

Acquisition of Pershing Gold Corporation (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about business combination [abstract]
Schedule of Consideration Paid	The consideration paid is calculated as follows: Non-diluted Pershing Gold common shares outstanding, April 3, 2019 33,686,921 Implicit share exchange ratio 0.715 The Company's common shares exchanged for Pershing Gold common shares 24,085,928 The Company's common share price, April 3, 2019 (USD) 1.55 Total common share consideration $ 37,418 Consideration on the exchange of Pershing Gold for the Company's equity instruments: Preferred shares exchanged for common shares 383 Preferred shares exchanged for preferred shares 5,714 Restricted share units exchanged for common shares 803 Warrants exchanged for warrants 1 Total equity consideration 44,319 Pre-existing convertible loan from the Company to Pershing Gold 2,913 Total consideration $ 47,232
Schedule of Purchase Price Allocation	The purchase price allocation is as follows: Cash and cash equivalents $ 241 Prepaid expenses 609 Restricted cash 3,787 Property, plant and equipment 49,272 Trade and other payables (5,454 ) Decommission provision (1,223 ) Net assets acquired $ 47,232

Trade and other receivables (Ta

Trade and other receivables (Tables)	12 Months Ended
	Dec. 31, 2020
Trade and other receivables [abstract]
Schedule of Trade and Other Receivables	December 31, December 31, 2020 2019 Trade receivables $ 2,761 $ 4,560 Value added taxes receivable 1,916 636 Other receivables 425 73 $ 5,102 $ 5,269

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2020
Classes of current inventories [abstract]
Schedule of Inventories	December 31, December 31, 2020 2019 Concentrates $ 2,327 $ 1,292 Current ore stockpiles 607 497 Spare parts and supplies 5,135 5,370 8,069 7,159 Long-term ore stockpiles 1,339 1,339 $ 9,408 $ 8,498

Property, plant and equipment (

Property, plant and equipment (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of detailed information about property, plant and equipment [abstract]
Schedule of Property, Plant and Equipment	Corporate Mining Non-producing Plant and Right-of-use office interests properties equipment lease assets equipment Total Cost Balance at January 1, 2019 $ 113,428 $ - $ 54,542 $ - $ 95 $ 168,065 Acquisition of Pershing Gold - 34,335 14,927 - 10 49,272 Asset additions 7,600 11,236 19,936 7,358 17 46,147 Change in decommissioning provision 93 2,510 - - - 2,603 Reclassification - 9,263 (343 ) 343 - 9,263 Balance at December 31, 2019 121,121 57,344 89,062 7,701 122 275,350 Asset additions 7,238 51,007 15,969 2,211 118 76,543 Change in decommissioning provision 370 (10 ) - - - 360 Balance at December 31, 2020 $ 128,729 $ 108,341 $ 105,031 $ 9,912 $ 240 $ 352,253 Accumulated depreciation and depletion Balance at January 1, 2019 $ 41,610 $ - $ 29,964 $ - $ 49 $ 71,623 Depreciation/depletion for the year 8,605 - 4,415 305 13 13,338 Balance at December 31, 2019 50,215 - 34,379 305 62 84,961 Depreciation/depletion for the year 4,145 - 3,510 291 27 7,973 Balance at December 31, 2020 $ 54,360 $ - $ 37,889 $ 596 $ 89 $ 92,934 Carrying value at December 31, 2019 $ 70,906 $ 57,344 $ 54,683 $ 7,396 $ 60 $ 190,389 at December 31, 2020 $ 74,369 $ 108,341 $ 67,142 $ 9,316 $ 151 $ 259,319

Deferred revenue (Tables)

Deferred revenue (Tables)	12 Months Ended
	Dec. 31, 2020
Accruals and deferred income [abstract]
Schedule of Components of Deferred Revenue	The following are components of deferred revenue as at December 31, 2020: Advances received $ 25,000 Recognition of revenue (2,750 ) Deferred revenue 22,250 Deferred transaction costs (409 ) Accretion on significant financing component 1,481 Net deferred revenue 23,322 Less: current portion (3,972 ) Non-current portion $ 19,350

Post-employment benefit oblig_2

Post-employment benefit obligations (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of defined benefit plans [abstract]
Schedule of Amounts Recognized in Consolidated Statements of Financial Position	The amounts recognized in the consolidated statements financial position are as follows: December 31, December 31, 2020 2019 Present value of funded obligations 34,024 29,519 Fair value of plan assets 20,626 19,382 Deficit of funded plans $ 13,398 $ 10,137
Schedule of Movements in Defined Benefit Obligations	The movements in the defined benefit obligations are as follows: December 31, December 31, 2020 2019 Obligations, beginning of year $ 29,519 $ 25,068 Current service costs 753 579 Interest costs 949 1,048 Benefits paid (1,111 ) (1,043 ) Actuarial loss 3,914 3,867 Obligations, end of year $ 34,024 $ 29,519
Schedule of Fair Value of Plan Assets	The movements in the fair value of plan assets are as follows: December 31, December 31, 2020 2019 Assets, beginning of year $ 19,382 $ 16,894 Return on assets 625 714 Actuarial gain 1,385 2,074 Employer contributions 345 743 Benefits paid (1,111 ) (1,043 ) Assets, end of year $ 20,626 $ 19,382
Schedule of Amounts Recognized in Consolidated Statements of Loss and Comprehensive Loss	The amounts recognized in the consolidated statements of loss and comprehensive loss are as follows: December 31, December 31, 2020 2019 Current service costs, interest costs, and return on assets included in cost of sales $ 1,077 $ 913
Schedule of Principal Actuarial Assumptions	The principal actuarial assumptions are as follows: December 31, December 31, 2020 2019 Discount rate (expense) 3.25 % 4.25 % Discount rate (year end disclosures) 2.50 % 3.25 % Future salary increases (salaried plan only) 5.00 % 5.00 %

Decommissioning provision (Tabl

Decommissioning provision (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of other provisions [abstract]
Schedule of Changes in Decommissioning Provision	December 31, December 31, 2020 2019 Provisions, beginning of year $ 7,765 $ 3,791 Acquisition of Pershing Gold - 1,223 Decommissioning costs and change in estimates 348 2,541 Accretion on decommissioning provision 166 210 Provisions, end of year $ 8,279 $ 7,765

Share capital (Tables)

Share capital (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of classes of share capital [abstract]
Schedule of Share Capital	December 31, December 31, 2020 2019 Issued 117,975,579 (2019: 86,607,305) common shares $ 350,707 $ 284,512 Nil (2019: 103,824) preferred shares - 161 $ 350,707 $ 284,673
Schedule of Changes in Company's Outstanding Stock Options	A summary of changes in the Company’s outstanding stock options is presented below: December 31, December 31, 2020 2019 Weighted Weighted average average exercise exercise Number price Number price (thousands) CAD (thousands) CAD Balance, beginning of year 8,021 $ 3.29 3,160 $ 3.77 Granted 3,710 3.85 5,915 2.86 Exercised (73 ) 2.60 (1,014 ) 2.33 Expired (999 ) 3.75 (40 ) 2.39 Balance, end of year 10,659 $ 3.45 8,021 $ 3.29
Schedule of Stock Options Outstanding and Exercisable	The following table summarizes information on stock options outstanding and exercisable as at December 31, 2020: Weighted average Weighted Weighted remaining average average Exercise contractual exercise exercise price life Outstanding price Exercisable price CAD (years) (thousands) CAD (thousands) CAD $2.00 to $3.00 1.26 3,172 $ 2.39 2,052 $ 2.39 $3.01 to $4.00 3.32 6,092 3.73 2,820 3.68 $4.01 to $5.00 0.19 1,355 4.58 1,355 4.58 $5.01 to $6.00 0.07 40 5.55 40 5.55 10,659 $ 3.45 6,267 $ 3.46
Fair Value Weighted Average Assumptions	The Company used the Black-Scholes Option Pricing Model to estimate fair value using the following weighted-average assumptions: Year ended Year ended December 31, December 31, 2020 2019 Expected stock price volatility (1) 63 % 59 % Risk free interest rate 0.29 % 1.55 % Expected life 3 years 4 years Expected forfeiture rate 2.34 % 2.66 % Expected dividend yield 0 % 0 % Share-based payments included in cost of sales $ - $ - Share-based payments included in general and administrative expenses 3,799 3,314 Total share-based payments $ 3,799 $ 3,314 (1) Expected volatility has been based on historical volatility of the Company’s publicly traded shares.
Warrants Issued and Outstanding	The warrants that are issued and outstanding as at December 31, 2020 are as follows: Number of Exercise Issuance Expiry warrants price (CAD) date date 1,447,426 4.68 Jun 2016 Jun 9, 2021 799,065 4.68 Jul 2016 Jun 14, 2021 1,074,999 3.12 Oct 2018 Oct 1, 2023 15,889 11.32 Apr 2019 May 6, 2022 389,771 2.40 May 2019 May 13, 2022 1,241,200 2.40 May 2019 May 29, 2022 118,664 3.37 Jul 2019 Jul 25, 2022 177,506 4.45 Oct 2019 Oct 30, 2022 1,000,000 3.50 Jul 2020 Jul 9, 2022 6,264,520

Weighted average basic and di_2

Weighted average basic and diluted number of common shares outstanding (Tables)	12 Months Ended
	Dec. 31, 2020
Weighted average basic and diluted number of common shares outstanding [abstract]
Schedule of Weighted Average Basic and Diluted Number of Common Shares Outstanding	Year ended Year ended December 31, December 31, 2020 2019 Basic weighted average number of shares 103,941,184 71,421,798 Effect of dilutive stock options and warrants - - Diluted weighted average number of shares 103,941,184 71,421,798

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [abstract]
Schedule of Disaggregation of Revenue	The following is a disaggregation of revenue categorized by commodities sold: Year ended Year ended December 31, December 31, 2020 2019 Silver Provisional sales revenue $ 19,212 $ 21,246 Derivative pricing adjustments 370 179 19,582 21,425 Zinc Provisional sales revenue $ 3,078 $ 48,309 Derivative pricing adjustments (1,094 ) (1,939 ) 1,984 46,370 Lead Provisional sales revenue $ 16,142 $ 26,061 Derivative pricing adjustments (400 ) (550 ) 15,742 25,511 Other by-products Provisional sales revenue $ 15 $ 597 Derivative pricing adjustments 71 (238 ) 86 359 Total provisional sales revenue $ 38,447 $ 96,213 Total derivative pricing adjustments (1,053 ) (2,548 ) Gross revenue $ 37,394 $ 93,665 Treatment and selling costs (9,511 ) (35,255 ) $ 27,883 $ 58,410

Cost of sales (Tables)

Cost of sales (Tables)	12 Months Ended
	Dec. 31, 2020
Non-controlling Interests
Schedule of Cost of Sales	Cost of sales is costs that directly relate to production at the mine operating segments and excludes depletion and amortization. The following are components of cost of sales: Year ended Year ended December 31, December 31, 2020 2019 Salaries and employee benefits $ 19,941 $ 27,150 Raw materials and consumables 6,953 22,144 Utilities 3,109 5,336 Other costs 2,146 2,456 Changes in inventories (910 ) (362 ) $ 31,239 $ 56,724

Corporate general and adminis_2

Corporate general and administrative expenses (Tables)	12 Months Ended
	Dec. 31, 2020
Corporate general and administrative expenses [abstract]
Schedule of Corporate General and Administrative Expenses	The following are components of corporate general and administrative expenses: Year ended Year ended December 31, December 31, 2020 2019 Salaries and employee benefits $ 2,456 $ 2,847 Directors’ fees 366 379 Share-based payments 4,028 3,671 Professional fees 788 809 Office and general 1,496 2,005 $ 9,134 $ 9,711

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Income Taxes [abstract]
Schedule of Components of Income Tax Expense	The components of income tax expense are as follows: Year ended Year ended December 31, December 31, 2020 2019 Current income tax expense $ 30 $ 1,659 Deferred income tax expense (recovery) (1,032 ) 299 Income tax expense (recovery) $ (1,002 ) $ 1,958
Schedule of Reconciliation of Effective Tax Rate	The Company’s effective rate of income tax differs from the statutory rate of 26.5% as follows: Year ended Year ended December 31, December 31, 2020 2019 Tax recovery at statutory rates $ (8,233 ) $ (8,555 ) Mexican mining royalty (587 ) 128 Impact of foreign tax rates (230 ) (388 ) Non-deductible expenses 2,610 2,741 Losses not recognized 5,438 8,032 Income tax expense (recovery) $ (1,002 ) $ 1,958
Schedule of Components of Deferred Tax Assets and Liabilities	The Company’s net deferred tax asset relates to the U.S. alternative minimum tax credits available: December 31, December 31, 2020 2019 Alternative minimum tax credits $ - $ 343 Provisions and reserves - 2,101 Net operating losses 6,792 4,230 Total deferred tax assets 6,792 6,674 Property, plant and equipment (6,792 ) (6,331 ) Net deferred tax assets $ - $ 343 The Company’s net deferred tax liability relates to the Mexican mining royalty and arises principally from the following: December 31, December 31, 2020 2019 Property, plant and equipment $ 850 $ 851 Other - 329 Total deferred tax liabilities 850 1,180 Provisions and reserves (391 ) (430 ) Net deferred tax liabilities $ 459 $ 750
Schedule of Components of Deferred Income Taxes not Recognized in Repect to Deductible Temporary Differences	Deferred income taxes have not been recognized in respect of the following deductible temporary differences, as management does not consider their utilization to be probable for the foreseeable future: December 31, December 31, 2020 2019 Property, plant and equipment $ 18,360 $ 19,288 Mexican tax losses (expiring in 2023 - 2030) 37,897 25,599 Canadian tax losses (expiring in 2027 - 2040) 23,999 19,051 U.S. tax losses (expiring in 2021 - 2038) 31,956 31,956 U.S. tax losses (no expiry) 21,953 20,779 Provisions and other 49,959 29,207 Deferred Mexican mining royalty 459 750 $ 184,583 $ 146,630

Key management transactions (Ta

Key management transactions (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of transactions between related parties [abstract]
Schedule of Transactions with Key management	Remuneration to directors and key management who have the authority and responsibility for planning, directing and continuing the activities of the Company: Year ended Year ended December 31, December 31, 2020 2019 Salaries and benefits $ 1,269 $ 1,565 Directors’ fees 366 379 Share-based payments 3,132 3,163

Financial risk management (Tabl

Financial risk management (Tables)	12 Months Ended
	Dec. 31, 2020
Financial risk management [abstract]
Schedule of Contractual Maturities of Financial Liabilities	The following table presents the contractual maturities of the Company’s financial liabilities on an undiscounted basis: December 31, 2020 Less than Over 5 Total 1 year 2-3 years 4-5 years years Trade and other payables $ 21,131 $ 21,131 $ - $ - $ - Glencore pre-payment facility 2,862 2,862 - - - Convertible debenture 10,000 - 10,000 - - Interest on convertible debenture 1,353 600 753 - - Promissory note 5,000 - 5,000 - - Interest on promissory note 511 356 155 - - Government loan 4,499 947 3,552 - - Loan payable 6,025 6,025 - - - Projected pension contributions 6,480 2,228 2,120 1,699 433 Decommissioning provision 10,029 - - - 10,029 Other long-term liabilities 4,619 - 4,068 22 529 $ 72,509 $ 34,149 $ 25,648 $ 1,721 $ 10,991
Schedule of Lease liabilities	Minimum lease payments in respect to lease liabilities are included in trade and other payables and other long-term liabilities as follows: December 31, 2020 Less than Over 5 Total 1 year 2-3 years 4-5 years years Trade and other payables $ 2,667 $ 2,667 $ - $ - $ - Other long-term liabilities 3,710 - 3,688 22 - $ 6,377 $ 2,667 $ 3,688 $ 22 $ -
Schedule of Summarizes Continuity of the Company's Total Lease Liabilities	The following table summarizes the continuity of the Company’s total lease liabilities discounted using an incremental borrowing rate ranging from 5% to 12% applied during the year: December 31, December 31, 2020 2019 Lease liabilities, beginning of year $ 7,025 $ 270 IFRS 16 adoption - 527 Additions 1,962 6,478 Lease principal payments (2,594 ) (234 ) Lease interest payments (759 ) (50 ) Accretion on lease liabilities 743 34 Lease liabilities, end of year $ 6,377 $ 7,025
Schedule of Market Risks	Financial instruments that may impact the Company’s net loss or other comprehensive loss due to currency fluctuations include CAD and MXP denominated assets and liabilities which are included in the following table: As at December 31, 2020 CAD MXP Cash and cash equivalents $ 573 $ 103 Trade and other receivables 36 2,297 Trade and other payables 2,513 5,816
Schedule of Sensitivity Analysis for Market Risks	As at December 31, 2020, the CAD/USD and MXP/USD exchange rates were 1.27 and 19.95 respectively. The sensitivity of the Company’s net loss and comprehensive loss due to changes in the exchange rates for the year ended December 31, 2020 is included in the following table: CAD/USD MXP/USD Exchange rate Exchange rate +/- 10 % +/- 10 % Approximate impact on: Net loss $ 945 $ 697 Other comprehensive loss (47 ) 32
Schedule of Fair Value Measurements	December 31, December 31, 2020 2019 Level 1 Cash and cash equivalents $ 4,705 $ 19,998 Restricted cash 4,082 4,007 Level 2 Trade and other receivables 5,102 5,269 Derivative instruments 4,568 3,855 Loan payable 5,564 - Glencore pre-payment facility 2,862 5,602 Convertible debenture 9,953 9,935 Promissory note 5,000 - Government loan 4,499 -

Segmented and geographic info_2

Segmented and geographic information, and major customers (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of operating segments [abstract]
Schedule of Operating Segments	All revenues from sales of concentrates for the year ended December 31, 2020 and 2019 were earned in Mexico and the United States. The following segmented information is presented as at and during years ended December 31, 2020 and 2019. The Cosalá Operations segment operates in Mexico while the Galena Complex and Relief Canyon segments operate in the United States. As at December 31, 2020 As at December 31, 2019 Cosalá Operations Galena Complex Relief Canyon Corporate and Other Total Cosalá Operations Galena Complex Relief Canyon Corporate and Other Total Cash and cash equivalents $ 133 $ 1,257 $ 52 $ 3,263 $ 4,705 $ 2,903 $ 14,761 $ 770 $ 1,564 $ 19,998 Trade and other receivables 2,297 2,769 - 36 5,102 3,852 1,374 - 43 5,269 Inventories 6,346 3,062 - - 9,408 6,361 2,137 - - 8,498 Prepaid expenses 428 832 650 290 2,200 615 524 471 304 1,914 Derivative instruments - - - - - - - - 585 585 Restricted cash 137 53 3,892 - 4,082 145 55 3,807 - 4,007 Property, plant and equipment 58,029 53,701 147,183 406 259,319 56,094 47,672 86,201 422 190,389 Deferred tax assets - - - - - - 343 - - 343 Total assets $ 67,370 $ 61,674 $ 151,777 $ 3,995 $ 284,816 $ 69,970 $ 66,866 $ 91,249 $ 2,918 $ 231,003 Trade and other payables $ 6,627 $ 5,096 $ 6,152 $ 3,256 $ 21,131 $ 9,241 $ 3,805 $ 6,506 $ 3,157 $ 22,709 Derivative instruments - - - 4,568 4,568 - - - 4,440 4,440 Loan payable - - - 5,564 5,564 - - - - - Glencore pre-payment facility 2,862 - - - 2,862 5,602 - - - 5,602 Other long-term liabilities - 529 3,557 533 4,619 - 566 4,495 584 5,645 Deferred revenue - - - 23,322 23,322 - - - 25,007 25,007 Convertible debenture - - - 9,953 9,953 - - - 9,935 9,935 Promissory note 5,000 5,000 - - - - - Government loan - 4,499 - - 4,499 - - - - - Post-employment benefit obligations - 13,398 - - 13,398 - 10,137 - - 10,137 Decommissioning provision 2,130 2,365 3,784 - 8,279 1,854 2,156 3,755 - 7,765 Deferred tax liabilities 459 - - - 459 750 - - - 750 Total liabilities $ 12,078 $ 25,887 $ 13,493 $ 52,196 $ 103,654 $ 17,447 $ 16,664 $ 14,756 $ 43,123 $ 91,990 Year ended December 31, 2020 Year ended December 31, 2019 Cosalá Operations Galena Complex Relief Canyon Corporate and Other Total Cosalá Operations Galena Complex Relief Canyon Corporate and Other Total Revenue $ 1,424 $ 26,459 $ - $ - $ 27,883 $ 39,620 $ 18,790 $ - $ - $ 58,410 Cost of sales (1,816 ) (29,423 ) - - (31,239 ) (27,642 ) (29,082 ) - - (56,724 ) Depletion and amortization (2,224 ) (5,415 ) (194 ) (140 ) (7,973 ) (9,448 ) (3,599 ) (164 ) (127 ) (13,338 ) Care and maintenance costs (5,501 ) (446 ) - - (5,947 ) (39 ) (399 ) - - (438 ) Corporate general and administrative - - - (9,134 ) (9,134 ) - - - (9,711 ) (9,711 ) Transaction costs - - - (23 ) (23 ) - - - (3,467 ) (3,467 ) Exploration costs (379 ) (3,697 ) (563 ) - (4,639 ) (1,132 ) (705 ) (715 ) - (2,552 ) Accretion on decommissioning provision (106 ) (21 ) (39 ) - (166 ) (148 ) (40 ) (22 ) - (210 ) Interest and financing income (expense) (243 ) - 84 (94 ) (253 ) (625 ) 15 19 (1,199 ) (1,790 ) Foreign exchange gain (loss) 189 - - 357 546 (289 ) - - 238 (51 ) Gain on disposal of assets - 37 - - 37 - - - - - Loss on derivative instruments - - - (160 ) (160 ) - - - (2,457 ) (2,457 ) Gain on derivative warrant liability - - - - - - - - 46 46 Income (loss) before income taxes (8,656 ) (12,506 ) (712 ) (9,194 ) (31,068 ) 297 (15,020 ) (882 ) (16,677 ) (32,282 ) Income tax recovery (expense) 470 741 - (209 ) 1,002 (1,277 ) (681 ) - - (1,958 ) Net loss for the year $ (8,186 ) $ (11,765 ) $ (712 ) $ (9,403 ) $ (30,066 ) $ (980 ) $ (15,701 ) $ (882 ) $ (16,677 ) $ (34,240 )

Capital management (Tables)

Capital management (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of objectives, policies and processes for managing capital [abstract]
Schedule of Capital Structure	The following summarizes the Company’s capital structure: December 31, December 31, 2020 2019 Equity attributable to shareholders of the Company $ 169,674 $ 126,291

Summary of significant accoun_3

Summary of significant accounting policies (Property, plant and equipment) (Details)	12 Months Ended
	Dec. 31, 2020
Mining interests [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful live of plant and equipment	unit of production based upon estimated proven and probable reserves
Plant and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful live of plant and equipment	3 – 30 years over straight line basis
Corporate Office equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Estimated useful live of plant and equipment	3 – 10 years over straight line basis

Significant accounting judgme_2

Significant accounting judgments and estimates (Narrative) (Details) $ in Thousands, $ in Thousands	Jan. 11, 2021USD ($)	Jan. 11, 2021CAD ($)	Jan. 29, 2021USD ($)	Jan. 29, 2021CAD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Statement Line Items [Line Items]
Gross proceeds from issue					$ 14,276
Operating cash flows					(18,921)	$ 14,143
Relief Canyon [Member]
Statement Line Items [Line Items]
Operating cash flows					$ 138,200
Bought Deal Public Offering [Member]
Statement Line Items [Line Items]
Gross proceeds from issue	$ 26,700		$ 26,700
Bought Deal Public Offering [Member] | Canadian Dollar [Member]
Statement Line Items [Line Items]
Gross proceeds from issue		$ 33,940		$ 33,940

Acquisition of Pershing Gold _3

Acquisition of Pershing Gold Corporation (Narrative) (Details) - Pershing Gold Corporation [Member]	Sep. 28, 2018shares
Disclosure of detailed information about business combination [line items]
Number of common shares to be received by holders of acquired company for each outstanding common share held	0.715
Number of common shares to be received by holders of acquired company for each outstanding preferred share held	461.44

Acquisition of Pershing Gold _4

Acquisition of Pershing Gold Corporation (Schedule of Consideration Paid) (Details) - Pershing Gold Corporation [Member] $ / shares in Units, $ in Thousands	Apr. 03, 2019USD ($)shares$ / shares
Disclosure of detailed information about business combination [line items]
Non-diluted Pershing Gold common shares outstanding, April 3, 2019 | shares	33,686,921
Implicit share exchange ratio | shares	0.715
The Company's common shares exchanged for Pershing Gold common shares | shares	24,085,928
The Company's common share price, April 3, 2019 (USD) | $ / shares	$ 1.55
Total common share consideration	$ 37,418
Consideration on the exchange of Pershing Gold for the Company's equity instruments:
Preferred shares exchanged for common shares	383
Preferred shares exchanged for preferred shares	5,714
Restricted share units exchanged for common shares	803
Warrants exchanged for warrants	1
Total equity consideration	44,319
Pre-existing convertible loan from the Company to Pershing Gold	2,913
Total consideration	$ 47,232

Acquisition of Pershing Gold _5

Acquisition of Pershing Gold Corporation (Schedule of Purchase Price Allocation) (Details) - Pershing Gold Corporation [Member] $ in Thousands	Apr. 03, 2019USD ($)
Disclosure of detailed information about business combination [line items]
Cash and cash equivalents	$ 241
Prepaid expenses	609
Restricted cash	3,787
Property, plant and equipment	49,272
Trade and other payables	(5,454)
Decommission provision	(1,223)
Net assets acquired	$ 47,232

Trade and other receivables (De

Trade and other receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Trade and other receivables [abstract]
Trade receivables	$ 2,761	$ 4,560
Value added taxes receivable	1,916	636
Other receivables	425	73
Trade and other receivables	$ 5,102	$ 5,269

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement Line Items [Line Items]
Inventories recognized as an expense	$ 31.2	$ 56.7
Concentrate [Member]
Statement Line Items [Line Items]
Inventory write-downs	0.3	1.2
Spare Parts and Supplies [Member]
Statement Line Items [Line Items]
Inventory write-downs	$ 0.2

Inventories (Schedule of Invent

Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Classes of current inventories [abstract]
Concentrates	$ 2,327	$ 1,292
Current Ore stockpiles	607	497
Spare parts and supplies	5,135	5,370
Inventories	8,069	7,159
Long-term ore stockpiles	1,339	1,339
Gross inventories	$ 9,408	$ 8,498

Property, plant and equipment_2

Property, plant and equipment (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]
Borrowing costs capitalized as property, plant and equipment	$ 4,200	$ 900
Insurance claim for equipment damaged from mining operations	100
Right-of-use assets	900
Property plant and equipment	259,319	$ 190,389
Property purchase option [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	9,300
San Felipe property [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment of property, plant and equipment	13,000
Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	42,900
Hochschild [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Final option payment	$ 750
Cosala Operations [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Right-of-use assets			$ 100
Galena Complex [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Right-of-use assets			300
Corporate and Other [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Right-of-use assets			500
Hochschild [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Impairment of property, plant and equipment			3,700
Assets held for sale			10,600
Fair value of assets			$ 6,900

Property, plant and equipment_3

Property, plant and equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Balance	$ 190,389
Balance	259,319	$ 190,389
Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	42,900
Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	275,350	168,065
Acquisition of Pershing Gold		49,272
Asset additions	76,543	46,147
Change in decommissioning provision	360	2,603
Reclassification		9,263
Balance	352,253	275,350
Cost [Member] | Mining interests [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	121,121	113,428
Acquisition of Pershing Gold
Asset additions	7,238	7,600
Change in decommissioning provision	370	93
Reclassification
Balance	128,729	121,121
Cost [Member] | Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	57,344
Acquisition of Pershing Gold		34,335
Asset additions	51,007	11,236
Change in decommissioning provision	(10)	2,510
Reclassification		9,263
Balance	108,341	57,344
Cost [Member] | Plant and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	89,062	54,542
Acquisition of Pershing Gold		14,927
Asset additions	15,969	19,936
Change in decommissioning provision
Reclassification		(343)
Balance	105,031	89,062
Cost [Member] | Right-of-use lease assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	7,701
Acquisition of Pershing Gold
Asset additions	2,211	7,358
Change in decommissioning provision
Reclassification		343
Balance	9,912	7,701
Cost [Member] | Corporate Office equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	122	95
Acquisition of Pershing Gold		10
Asset additions	118	17
Change in decommissioning provision
Reclassification
Balance	240	122
Accumulated depreciation and depletion [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Depreciation/depletion for the year	7,973	13,338
Accumulated depreciation and depletion [Member] | Mining interests [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	50,215	41,610
Depreciation/depletion for the year	4,145	8,605
Balance	50,360	50,215
Accumulated depreciation and depletion [Member] | Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance
Depreciation/depletion for the year
Balance
Accumulated depreciation and depletion [Member] | Plant and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	34,379	29,964
Depreciation/depletion for the year	3,510	4,415
Balance	37,889	34,379
Accumulated depreciation and depletion [Member] | Right-of-use lease assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	305
Depreciation/depletion for the year	291	305
Balance	596	305
Accumulated depreciation and depletion [Member] | Corporate Office equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	62	49
Depreciation/depletion for the year	27	13
Balance	89	62
Carrying value [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	190,389
Balance	259,319	190,389
Carrying value [Member] | Mining interests [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	70,906
Balance	74,369	70,906
Carrying value [Member] | Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	57,344
Balance	108,341	57,344
Carrying value [Member] | Plant and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	54,683
Balance	67,142	54,683
Carrying value [Member] | Right-of-use lease assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	7,396
Balance	9,316	7,396
Carrying value [Member] | Corporate Office equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	60
Balance	151	60
Total [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	84,961	71,623
Balance	$ 92,934	$ 84,961

Deferred revenue (Narrative) (D

Deferred revenue (Narrative) (Details) - Sandstorm Gold Ltd [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement Line Items [Line Items]
Interest expense	$ 1.8	$ 0.5
Bottom of range [Member]
Statement Line Items [Line Items]
Percentage of reduced variable deliveries	2.00%
Top of range [member]
Statement Line Items [Line Items]
Percentage of reduced variable deliveries	4.00%

Deferred revenue (Schedule of C

Deferred revenue (Schedule of Components of Deferred Revenue) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [line items]
Less: current portion	$ (3,972)	$ (2,029)
Non-current portion	19,350	$ 22,978
Sandstorm Gold Ltd [Member]
Disclosure of transactions between related parties [line items]
Advances received	25,000
Recognition of revenue	(2,750)
Deferred revenue	22,250
Deferred transaction costs	(409)
Accretion on significant financing component	1,481
Net deferred revenue	23,322
Less: current portion	(3,972)
Non-current portion	$ 19,350

Convertible debenture (Narrativ

Convertible debenture (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 03, 2019	Dec. 31, 2020	Dec. 31, 2019
Plant and equipment [Member]
Disclosure of detailed information about borrowings [line items]
Interest expense on borrowings		$ 0.6	$ 0.4
Sandstorm Gold Ltd [Member]
Disclosure of detailed information about borrowings [line items]
Debentures issued	$ 10
Maturity date	Apr. 3, 2023
Interest rate	6.00%
Conversion Price	$ 2.14
Loss on derivative option		$ 0.2	$ 4.4
Sandstorm Gold Ltd [Member] | Unsecured Promissory Note [Member]
Disclosure of detailed information about borrowings [line items]
Principal amount under convertible debenture	$ 3

Promissory note (Details)

Promissory note (Details) - USD ($) $ in Millions	Dec. 15, 2020	Dec. 31, 2020
Promissory Note [Member]
Disclosure of detailed information about borrowings [line items]
Interest expense		$ 0.1
Sandstorm Gold Ltd [Member]
Disclosure of detailed information about borrowings [line items]
Issue of promissory note	$ 5
Maturity date of promissory note	Jun. 15, 2022
Interest rate on promissory note	7.00%

Loan payable (Details)

Loan payable (Details) - Precious Metals Delivery and Purchase Agreement with Macquarie Bank Ltd. [Member] - Relief Canyon [Member] - USD ($) $ in Millions	1 Months Ended	12 Months Ended
	Jul. 31, 2020	Dec. 31, 2020	Jan. 16, 2020
Disclosure of detailed information about borrowings [line items]
Working capital loan			$ 5
Monthly fixed cash payments	$ 7.2
Financing expense		$ 1.7

Glencore pre-payment facility (

Glencore pre-payment facility (Details) - Metagri S.A. de C.V. [Member] - USD ($) $ in Millions	Mar. 30, 2017	Dec. 31, 2020
Prepayment Facility [Member]
Disclosure of detailed information about borrowings [line items]
Aggregate principal amount of debt		$ 15
Annual principal repayment due 2018		3.9
Annual principal repayment due 2019		5.5
Annual principal repayment due 2021		$ 2.7
Promissory Note [Member]
Disclosure of detailed information about borrowings [line items]
Aggregate principal amount of debt	$ 15
Term loan	4 years
Interest rate	5.00%

Government loan (Details)

Government loan (Details) - USD ($) $ in Thousands	May 11, 2020	Dec. 31, 2020	Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]
Government loan		$ 4,499
Paycheck Protection Program from U.S. CARES Act [Member]
Disclosure of detailed information about borrowings [line items]
Government loan	$ 4,500
Loan term	2 years
Interest rate	1.00%

Post-employment benefit oblig_3

Post-employment benefit obligations (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of defined benefit plans [line items]
Increase (decrease) in defined benefit obligation that would have been caused by a 1% decrease in discount rate	$ 6,100	$ 4,900
Increase (decrease) in defined benefit obligation that would have been caused by a 1% increase in discount rate	$ 100	$ 100
Expected percentage return on plan assets	3.20%	4.20%
Expected contributions to pension benefit plans	$ 2,200	$ 1,000
Actuarial gain (loss) on post-employment benefit obligations	$ 2,529	1,792
Expected average service life of active plan participants	9 years
Bottom of range [member]
Disclosure of defined benefit plans [line items]
Increase (decrease) in defined benefit obligation	$ 34,000	29,500
Increase (decrease) in defined benefit obligation 1% increase	34,000	29,500
Top of range [member]
Disclosure of defined benefit plans [line items]
Increase (decrease) in defined benefit obligation	40,100	34,400
Increase (decrease) in defined benefit obligation 1% increase	$ 34,100	$ 29,600

Post-employment benefit oblig_4

Post-employment benefit obligations (Schedule of Amounts Recognized in Consolidated Statements of Financial Position) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of defined benefit plans [abstract]
Present value of funded obligations	$ 34,024	$ 29,519
Fair value of plan assets	20,626	19,382
Deficit of funded plans	$ 13,398	$ 10,137

Post-employment benefit oblig_5

Post-employment benefit obligations (Schedule of Defined Benefit Obligations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of net defined benefit liability (asset) [line items]
Obligations, beginning of year	$ 29,519
Obligations, end of year	34,024	$ 29,519
Defined Benefit Obligation [Member]
Disclosure of net defined benefit liability (asset) [line items]
Obligations, beginning of year	29,519	25,068
Current service costs	753	579
Interest costs	949	1,048
Benefits paid	(1,111)	(1,043)
Actuarial loss	3,914	3,867
Obligations, end of year	$ 34,024	$ 29,519

Post-employment benefit oblig_6

Post-employment benefit obligations (Schedule of Movements in Fair Value of Plan Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of net defined benefit liability (asset) [line items]
Assets, beginning of year	$ 19,382
Assets, end of year	20,626	$ 19,382
Plan Assets [Member]
Disclosure of net defined benefit liability (asset) [line items]
Assets, beginning of year	19,382	16,894
Return on assets	625	714
Actuarial gain	1,385	2,074
Employer contributions	345	743
Benefits paid	(1,111)	(1,043)
Assets, end of year	$ 20,626	$ 19,382

Post-employment benefit oblig_7

Post-employment benefit obligations (Amounts Recognized In Consolidated Statements of Loss and Comprehensive Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of defined benefit plans [abstract]
Current service costs, interest costs, and return on assets included in cost of sales	$ 1,077	$ 913

Post-employment benefit oblig_8

Post-employment benefit obligations (Schedule of Principal Actuarial Assumptions) (Details)	Dec. 31, 2020	Dec. 31, 2019
Disclosure of defined benefit plans [abstract]
Discount rate (expense)	3.25%	4.25%
Discount rate (year end disclosures)	2.50%	3.25%
Future salary increases (salaried plan only)	5.00%	5.00%

Decommissioning provision (Narr

Decommissioning provision (Narrative) (Details) - Decommissioning Provision [Member] $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)
Disclosure of other provisions [line items]
Estimated undiscounted amount of decommissioning provision	$ 10
Bottom of range [member]
Disclosure of other provisions [line items]
Risk free rate used to discount decommissioning provision	0.40%
Term used to estimate decommissioning provision	5 years
Top of range [member]
Disclosure of other provisions [line items]
Risk free rate used to discount decommissioning provision	7.00%
Term used to estimate decommissioning provision	13 years

Decommissioning provision (Sche

Decommissioning provision (Schedule of Decomissioning Provision) (Details) - Decommissioning Provision [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of other provisions [line items]
Provisions, beginning of year	$ 7,765	$ 3,791
Acquisition of Pershing Gold		1,223
Decommissioning costs and change in estimates	348	2,541
Accretion on decommissioning provision	166	210
Provisions, end of year	$ 8,279	$ 7,765

Share capital (Share Issuances)

Share capital (Share Issuances) (Narrative) (Details) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands	Sep. 04, 2020USD ($)shares	Sep. 04, 2020USD ($)$ / sharesshares	May 13, 2020USD ($)shares	May 13, 2020USD ($)$ / sharesshares	Apr. 03, 2019CAD ($)$ / sharesshares	Apr. 16, 2020USD ($)shares	Jul. 26, 2019USD ($)shares	Jul. 26, 2019USD ($)$ / sharesshares	Dec. 31, 2020USD ($)$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Oct. 08, 2020shares	Sep. 04, 2020CAD ($)shares	Jul. 09, 2020USD ($)shares	May 13, 2020CAD ($)shares	Dec. 31, 2018USD ($)
Disclosure of classes of share capital [line items]
Share capital issue									$ 350,707	$ 284,673
Issuance of common shares | shares									117,975,579	86,607,305
Number of shares reserved for issuance as a percent of total common shares issued and oustanding									10.00%
Maximum term of stock options									Under the plan, the Board of Directors determines the term of a stock option to a maximum of 10 years
Weighted average fair value at grant | $ / shares									$ 1.26	$ 0.98
Shares outstanding, amount									$ 181,162	$ 139,013					$ 84,196
Restricted Share [Member]
Disclosure of classes of share capital [line items]
Shares outstanding, share | shares									276,762	89,196
Shares outstanding, amount									$ 900	$ 300
Deferred Share Units [Member]
Disclosure of classes of share capital [line items]
Shares outstanding, share | shares									519,803	323,333
Percentage of quarterly director fee payments earned as awards of deferred share units									20.00%
February 2020 ATM Agreement [Member]
Disclosure of classes of share capital [line items]
Share capital issue						$ 15,000
Common shares price | $ / shares		$ 3.86		$ 2.80
Issuance of common shares | shares						9,014,953
Transaction costs	$ 1,700		$ 1,300			$ 700
Exercise price | $ / shares				$ 3.50
Period of warrants			2 years
Proceeds from warrants issued			$ 200
Bought Deal Public Offering [Member]
Disclosure of classes of share capital [line items]
Share capital issue	$ 29,800	$ 29,800	$ 20,400	$ 20,400
Issuance of common shares | shares	10,204,510	10,204,510	10,269,500	10,269,500								10,204,510		10,269,500
Warrants issued | shares			1,000,000	1,000,000										1,000,000
Bought Deal Public Offering [Member] | Canadian Dollar [Member]
Disclosure of classes of share capital [line items]
Share capital issue												$ 39,390		$ 28,750
Sandstorm Gold Ltd [Member]
Disclosure of classes of share capital [line items]
Share capital issue					$ 10,000
Weighted average price | $ / shares					$ 2.09
Issuance of common shares | shares					4,784,689
Mr. Eric Sprott [Member] | Private Placement [Member]
Disclosure of classes of share capital [line items]
Share capital issue							$ 10,000	$ 10,000
Common shares price | $ / shares								$ 3.30
Issuance of common shares | shares							3,955,454	3,955,454
Transaction costs							$ 400
Warrants issued | shares							118,664	118,664
Exercise price | $ / shares								$ 3.37
Period of warrants							3 years
San Felipe Property With Hochschild [Member] | Outstanding Option Acquisition Agreement [Member]
Disclosure of classes of share capital [line items]
Share capital issue													$ 3,750
Issuance of common shares | shares											1,687,401
Percentage of ownership interest acquired													100.00%
Number of shares issuable | shares													1,687,401

Share capital (Schedule of Shar

Share capital (Schedule of Share Capital) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of classes of share capital [abstract]
Common shares issued, shares	117,975,579	86,607,305
Common shares issued, value	$ 350,707	$ 284,673
Preferred issued, shares		103,824
Preferred issued, value		$ 161
Share capital (Note18)	$ 350,707	$ 284,673

Share capital (Summary of Chang

Share capital (Summary of Changes in Company's Outstanding Stock Options) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2020shares$ / shares	Dec. 31, 2019shares$ / shares
Number
Balance, beginning of year | shares	8,021	3,160
Granted | shares	3,710	5,915
Exercised | shares	(73)	(1,014)
Expired | shares	(999)	(40)
Balance, end of year | shares	10,659	8,021
Weighted average exercise price
Balance, beginning of year | $ / shares	$ 3.29	$ 3.77
Granted | $ / shares	3.85	2.86
Exercised | $ / shares	3.45	2.33
Expired | $ / shares	3.75	2.39
Balance, end of year | $ / shares	$ 3.45	$ 3.29

Share capital (Schedule of Stoc

Share capital (Schedule of Stock Options Outstanding and Exercisable) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2020shares$ / shares	Dec. 31, 2019shares$ / shares	Dec. 31, 2018shares
Disclosure of range of exercise prices of outstanding share options [line items]
Outstanding | shares	10,659	8,021	3,160
Weighted average exercise price	$ 3.45	$ 2.33
Exercisable | shares	6,267
Weighted average exercise price	$ 3.46
CAD 2.00 to 3.00 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Weighted average remaining contractual life (years)	1 year 3 months 4 days
Outstanding | shares	3,172
Weighted average exercise price	$ 2.39
Exercisable | shares	2,052
Weighted average exercise price	$ 2.39
CAD 2.00 to 3.00 [Member] | Bottom of range [member]
Disclosure of range of exercise prices of outstanding share options [line items]
Exercise price	2
CAD 2.00 to 3.00 [Member] | Top of range [member]
Disclosure of range of exercise prices of outstanding share options [line items]
Exercise price	$ 3
CAD 3.01 to 4.00 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Weighted average remaining contractual life (years)	3 years 3 months 26 days
Outstanding | shares	6,092
Weighted average exercise price	$ 3.73
Exercisable | shares	2,820
Weighted average exercise price	$ 3.68
CAD 3.01 to 4.00 [Member] | Bottom of range [member]
Disclosure of range of exercise prices of outstanding share options [line items]
Exercise price	3.01
CAD 3.01 to 4.00 [Member] | Top of range [member]
Disclosure of range of exercise prices of outstanding share options [line items]
Exercise price	$ 4
CAD 4.01 to 5.00 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Weighted average remaining contractual life (years)	2 months 8 days
Outstanding | shares	1,355
Weighted average exercise price	$ 4.58
Exercisable | shares	1,355
Weighted average exercise price	$ 4.58
CAD 4.01 to 5.00 [Member] | Bottom of range [member]
Disclosure of range of exercise prices of outstanding share options [line items]
Exercise price	4.01
CAD 4.01 to 5.00 [Member] | Top of range [member]
Disclosure of range of exercise prices of outstanding share options [line items]
Exercise price	$ 5
CAD 5.01 to 6.00 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Weighted average remaining contractual life (years)	26 days
Outstanding | shares	40
Weighted average exercise price	$ 5.55
Exercisable | shares	40
Weighted average exercise price	$ 5.55
CAD 5.01 to 6.00 [Member] | Bottom of range [member]
Disclosure of range of exercise prices of outstanding share options [line items]
Exercise price	5.01
CAD 5.01 to 6.00 [Member] | Top of range [member]
Disclosure of range of exercise prices of outstanding share options [line items]
Exercise price	$ 6

Share capital (Schedule of Fair

Share capital (Schedule of Fair Value Weighted-average Assumptions) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)yr	Dec. 31, 2019USD ($)yr
Disclosure of classes of share capital [abstract]
Expected stock price volatility	63.00%	59.00%
Risk free interest rate	2.29%	1.55%
Expected life | yr	3	4
Expected forfeiture rate	2.34%	2.66%
Expected dividend yield	0.00%	0.00%
Share-based payments included in cost of sales
Share-based payments included in general and administrative expenses	3,799	3,314
Total share-based payments	$ 3,799	$ 3,314

Share capital (Schedule of Warr

Share capital (Schedule of Warrants Issued and Outstanding) (Details)	12 Months Ended
	Dec. 31, 2020shares$ / shares
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	6,264,520
CAD 4.68 Issued Jun 2016 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	1,447,426
Exercise price | $ / shares	$ 4.68
Issuance date	Jun 2016
Expiry date	Jun 9, 2021
CAD 4.68 Issued Jul 2016 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	799,065
Exercise price | $ / shares	$ 4.68
Issuance date	Jul 2016
Expiry date	Jun 14, 2021
CAD 3.12 Issued Oct 2018 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	1,074,999
Exercise price | $ / shares	$ 3.12
Issuance date	Oct 2018
Expiry date	Oct 1, 2023
CAD 11.32 Issued April 2019 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	15,889
Exercise price | $ / shares	$ 11.32
Issuance date	Apr 2019
Expiry date	May 6, 2022
CAD 2.40 Issued May 2019 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	389,771
Exercise price | $ / shares	$ 2.40
Issuance date	May 2019
Expiry date	May 13, 2022
CAD 2.40 Issued May 2019 One [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	1,241,200
Exercise price | $ / shares	$ 2.40
Issuance date	May 2019
Expiry date	May 29, 2022
CAD 3.37 Issued Jul 2019 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	118,664
Exercise price | $ / shares	$ 3.37
Issuance date	Jul 2019
Expiry date	Jul 25, 2022
CAD 4.45 Issued Oct 2019 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	177,506
Exercise price | $ / shares	$ 4.45
Issuance date	Oct 2019
Expiry date	Oct 30, 2022
CAD 3.50 Issued Jul 2020 [Member]
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	1,000,000
Exercise price | $ / shares	$ 3.50
Issuance date	Jul 2020
Expiry date	Jul 9, 2022

Weighted average basic and di_3

Weighted average basic and diluted number of common shares outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Basic weighted average number of shares	103,941,184	71,421,798
Effect of dilutive stock options and warrants
Diluted weighted average number of shares	103,941,184	71,421,798
Stock option [Member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Diluted weighted average number of shares		103,824
Anti-dilutive stock	10,658,957	8,020,790
Warrant [Member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Diluted weighted average number of shares	6,264,520	5,264,520

Non-controlling interests (Deta

Non-controlling interests (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement Line Items [Line Items]
Amount of initial contribution	$ 4,987
Recognized non-controlling interests	$ 11,488	$ 12,722
Mr. Eric Sprott [Member] | Galena Complex [Member]
Statement Line Items [Line Items]
Non controlling interest percentage	40.00%
Amount of initial contribution	$ 15,000
Recognized non-controlling interests	14,300
Mr. Eric Sprott [Member] | Galena Complex [Member] | Top of range [member]
Statement Line Items [Line Items]
Additonal amount of initial contribution	$ 5,000

Revenue (Schedule of Disaggrega

Revenue (Schedule of Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	$ 38,447	$ 96,213
Derivative pricing adjustments	(1,053)	(2,548)
Gross revenue	37,394	93,665
Treatment and selling costs	(9,511)	(35,255)
Revenue	27,883	58,410
Silver [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	19,212	21,246
Derivative pricing adjustments	370	179
Gross revenue	19,582	21,425
Zinc [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	3,078	48,309
Derivative pricing adjustments	(1,094)	(1,939)
Gross revenue	1,984	46,370
Lead [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	16,142	26,061
Derivative pricing adjustments	(400)	(550)
Gross revenue	15,742	25,511
Other by-products [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	15	597
Derivative pricing adjustments	71	(238)
Gross revenue	$ 86	$ 359

Cost of sales (Details)

Cost of sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Non-controlling Interests
Salaries and employee benefits	$ 19,941	$ 27,150
Raw materials and consumables	6,953	22,144
Utilities	3,109	5,336
Other costs	2,146	2,456
Changes in inventories	(910)	(362)
Cost of sales	$ 31,239	$ 56,724

Corporate general and adminis_3

Corporate general and administrative expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Corporate general and administrative expenses [abstract]
Salaries and employee benefits	$ 2,456	$ 2,847
Directors' fees	366	379
Share-based payments	4,028	3,671
Professional fees	788	809
Office and general	1,496	2,005
Corporate general and administrative expenses	$ 9,134	$ 9,711

Income taxes (Schedule of Compo

Income taxes (Schedule of Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [abstract]
Current income tax expense	$ 30	$ 1,659
Deferred income tax expense (recovery)	(1,032)	299
Income tax expense (recovery)	$ (1,002)	$ 1,958

Income taxes (Schedule of Recon

Income taxes (Schedule of Reconciliation of Effective Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [abstract]
Statutory tax rate	26.50%	26.50%
Tax recovery at statutory rates	$ (8,233)	$ (8,555)
Mexican mining royalty	(587)	128
Impact of foreign tax rates	(230)	(388)
Non-deductible expenses	2,610	2,741
Losses not recognized	5,438	8,032
Income tax expense (recovery)	$ (1,002)	$ 1,958

Income taxes (Schedule of Com_2

Income taxes (Schedule of Components of Deferred Tax Assets Alternative Minimum Tax Credits) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets		$ 343
Net Deferred Tax Asset U.S. Alternative Minimum Tax Credits [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Alternative minimum tax credits		343
Provisions and reserves		2,101
Net operating losses	6,792	4,230
Total deferred tax assets	6,792	6,674
Property, Plant and equipment	(6,792)	(6,331)
Net deferred tax assets		$ 343

Income taxes (Schedule of Com_3

Income taxes (Schedule of Components of Net Deferred Tax Liability Relating to Mexican Mining Royalty) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax liabilities	$ 459	$ 750
Net Deferred Tax Liability Mexican Mining Royalty [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Property, Plant and equipment	850	851
Other		329
Total deferred tax liabilities	850	1,180
Provisions and reserves	(391)	(430)
Net deferred tax liabilities	$ 459	$ 750

Income taxes (Components of Def

Income taxes (Components of Deferred Income Taxes not Recognized in Repect to Deductible Temporary Differences) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Total deferred income taxes not recognized from temporary differences and unused tax losses as future utilization is not considered probable	$ 184,583	$ 146,630
Temporary Differences - Property, Plant and Equipment [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income taxes not recognized from temporary differences as future utilization is not considered probable	18,360	19,288
Mexican Tax Losses (expiring in 2023 - 2030) [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income taxes not recognized from tax losses as future utilization is not considered probable	37,897	25,599
Canadian Tax Losses (expiring in 2027 - 2040) [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income taxes not recognized from tax losses as future utilization is not considered probable	23,999	19,051
U.S. Tax Losses (expiring in 2021 - 2038) [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income taxes not recognized from tax losses as future utilization is not considered probable	31,956	31,956
U.S. tax losses (no expiry) [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income taxes not recognized from temporary differences as future utilization is not considered probable	21,953	20,779
Provisions and Other [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income taxes not recognized from temporary differences as future utilization is not considered probable	49,959	29,207
Deferred Mexican Mining Royalty [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income taxes not recognized from temporary differences as future utilization is not considered probable	$ 459	$ 750

Key management transactions (De

Key management transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of transactions between related parties [abstract]
Salaries and benefits	$ 1,269	$ 1,565
Directors' fees	366	379
Share-based payments	$ 3,132	$ 3,163

Financial risk management (Narr

Financial risk management (Narrative) (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)lb	Dec. 31, 2019USD ($)lb$ / shares
Non-Hedge Commodity Foreign Forward Contracts [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Realized gain on commodity contracts		$ 2
Unrealized gains on forward exchange contracts		0.5
Realized gain on foreign exchange contract		1
Non-Hedge Commodity Foreign Forward Contracts [Member] | Convertible Debenture [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Realized gain on commodity contracts	$ (0.2)	$ (2.5)
Non-Hedge Commodity Foreign Forward Contracts [Member] | Zinc [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Quantity of commodity sell | lb	1,600,000	1,600,000
Average price per pound | $ / shares		$ 1.20
Non-Hedge Commodity Foreign Forward Contracts [Member] | Lead [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Quantity of commodity sell | lb	3,300,000	3,300,000
Average price per pound | $ / shares		$ 0.95
Credit risk [Member] | Trade and other receivables [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk exposure associated with instrument	$ 2.8	$ 4.6
Silver, Zinc, Lead and Copper Prices [Member] | Trade and other receivables [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk exposure associated with instrument	$ 0.3	$ 0.5
Interest rate risk [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Interest rate basis spread over U.S. LIBOR	5.00%

Financial risk management (Sche

Financial risk management (Schedule of Contractual Maturities of Financial Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade and other payables	$ 21,131
Glencore pre-payment facility	2,862
Convertible debenture	10,000
Interest on convertible debenture	1,353
Promissory note	5,000
Interest on promissory note	511
Government loan	4,499
Loan payable	6,025
Projected pension contributions	6,480
Decommissioning provision	10,029
Other long-term liabilities	4,619
Total contractual maturities of financial liabilities on an undiscounted basis	72,509
Other Long-Term Liabilities [Member] | Less than 1 year [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade and other payables	21,131
Glencore pre-payment facility	2,862
Convertible debenture
Interest on convertible debenture	600
Promissory note
Interest on promissory note	356
Government loan	947
Loan payable	6,025
Projected pension contributions	2,228
Decommissioning provision
Other long-term liabilities
Total contractual maturities of financial liabilities on an undiscounted basis	34,149
Other Long-Term Liabilities [Member] | 2-3 Years [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade and other payables
Glencore pre-payment facility
Convertible debenture	10,000
Interest on convertible debenture	753
Promissory note	5,000
Interest on promissory note	155
Government loan	3,552
Loan payable
Projected pension contributions	2,120
Decommissioning provision
Other long-term liabilities	4,068
Total contractual maturities of financial liabilities on an undiscounted basis	25,648
Other Long-Term Liabilities [Member] | 4-5 Years [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade and other payables
Glencore pre-payment facility
Convertible debenture
Interest on convertible debenture
Promissory note
Interest on promissory note
Government loan
Loan payable
Projected pension contributions	1,699
Decommissioning provision
Other long-term liabilities	22
Total contractual maturities of financial liabilities on an undiscounted basis	1,721
Other Long-Term Liabilities [Member] | Over 5 Years [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade and other payables
Glencore pre-payment facility
Convertible debenture
Interest on convertible debenture
Promissory note
Interest on promissory note
Government loan
Loan payable
Projected pension contributions	433
Decommissioning provision	10,029
Other long-term liabilities	529
Total contractual maturities of financial liabilities on an undiscounted basis	$ 10,991

Financial risk management (Sc_2

Financial risk management (Schedule of Lease liabilities) (Details) $ in Thousands	Dec. 31, 2020USD ($)
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	$ 6,377
Less than 1 year [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	2,667
2-3 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	3,688
4-5 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	22
Over 5 Years [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments
Trade and Other Payables [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	2,667
Trade and Other Payables [Member] | Less than 1 year [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	2,667
Trade and Other Payables [Member] | 2-3 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments
Trade and Other Payables [Member] | 4-5 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments
Trade and Other Payables [Member] | Over 5 Years [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments
Other Long-Term Liabilities [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	3,710
Other Long-Term Liabilities [Member] | Less than 1 year [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments
Other Long-Term Liabilities [Member] | Over 5 Years [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments
Other Long-Term Liabilities [Member] | 2-3 Years [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	3,688
Other Long-Term Liabilities [Member] | 4-5 Years [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	$ 22

Financial risk management (Sc_3

Financial risk management (Schedule of Summarizes Continuity of the Companys Total Lease Liabilities) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financial risk management [abstract]
Lease liabilities, beginning of year	$ 7,025	$ 270
IFRS 16 adoption		527
Additions	1,962	6,478
Lease principal payments	(2,594)	(234)
Lease interest payments	(759)	(50)
Accretion on lease liabilities	743	34
Lease liabilities, end of year	$ 6,377	$ 7,025

Financial risk management (Sc_4

Financial risk management (Schedule of Currency Risks) (Details) $ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2020CAD ($)$ / $$ / $	Dec. 31, 2020MXN ($)	Dec. 31, 2019USD ($)	Dec. 31, 2020MXN ($)$ / $$ / $	Dec. 31, 2019MXN ($)$ / $
Non-Hedge Foreign Exchange Forward Contracts [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Realized gains on forward exchange contracts				$ 400
Unrealized gains on forward exchange contracts				100
Realized gain on foreign exchange contract				$ 400
Non-Hedge Foreign Exchange Forward Contracts [Member] | Mexican Peso [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk from currency fluctuations yet to be recognized in net earnings or other comprehensive income						$ 26,000
Foreign exchange rates | $ / $						19.81
Foreign Exchange Forward Contracts [Member] | Mexican Peso [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk from currency fluctuations yet to be recognized in net earnings or other comprehensive income					$ 26,000
Currency risk [Member] | Canadian Dollar [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Approximate impact of exchange rate fluctuations on net loss		$ 945
Approximate impact of exchange rate fluctuations on other comprehensive loss		$ (47)
Foreign exchange rates | $ / $		1.27			1.27
Currency risk [Member] | Mexican Peso [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Approximate impact of exchange rate fluctuations on net loss			$ 697
Approximate impact of exchange rate fluctuations on other comprehensive loss			$ 32
Foreign exchange rates | $ / $		19.95			19.95
Currency risk [Member] | Cash and Cash Equivalents [Member] | Canadian Dollar [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk from currency fluctuations yet to be recognized in net earnings or other comprehensive income		$ 573
Currency risk [Member] | Cash and Cash Equivalents [Member] | Mexican Peso [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk from currency fluctuations yet to be recognized in net earnings or other comprehensive income					$ 103
Currency risk [Member] | Trade and other receivables [Member] | Canadian Dollar [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk from currency fluctuations yet to be recognized in net earnings or other comprehensive income		36
Currency risk [Member] | Trade and other receivables [Member] | Mexican Peso [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk from currency fluctuations yet to be recognized in net earnings or other comprehensive income					2,297
Currency risk [Member] | Trade and Other Payables [Member] | Canadian Dollar [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk from currency fluctuations yet to be recognized in net earnings or other comprehensive income		$ 2,513
Currency risk [Member] | Trade and Other Payables [Member] | Mexican Peso [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk from currency fluctuations yet to be recognized in net earnings or other comprehensive income					$ 5,816

Financial risk management (Sc_5

Financial risk management (Schedule of Fair Value Measurements) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	$ 4,705	$ 19,998	$ 3,464
Restricted cash	4,082	4,007
Trade and other receivables	5,102	5,269
Derivative instruments	4,568	4,440
Loan payable	5,564
Convertible debenture	9,953	9,935
Promissory note	5,000
Government loan	3,552
Level 1 [Member]
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	4,705	19,998
Restricted cash	4,082	4,007
Level 2 [Member]
Disclosure of fair value measurement of assets [line items]
Trade and other receivables	5,102	5,269
Derivative instruments	4,568	3,585
Loan payable	5,564
Glencore pre-payment facility	2,862	5,602
Convertible debenture	9,953	9,935
Promissory note	5,000
Government loan	$ 4,499

Segmented and geographic info_3

Segmented and geographic information, and major customers (Statements of Financial Position) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating segments [line items]
Cash and cash equivalents	$ 4,705	$ 19,998	$ 3,464
Trade and other receivables	5,102	5,269
Inventories	8,069	7,159
Prepaid expenses	2,200	1,914
Derivative instruments		585
Restricted cash	4,082	4,007
Property, plant and equipment	259,319	190,389
Deferred tax assets		343
Total assets	284,816	231,003
Trade and other payables	21,131	22,709
Derivative instruments	4,568	4,440
Loan payable	5,564
Glencore pre-payment facility	2,862	5,602
Other long-term liabilities	4,619	5,645
Deferred revenue	19,350	22,978
Convertible debenture	9,953	9,935
Promissory note	5,000
Government loan	4,499
Post-employment benefit obligations	13,398	10,137
Decommissioning provision	8,279	7,765
Deferred tax liabilities	459	750
Total liabilities	103,654	91,990
Cosala Operations [Member]
Disclosure of operating segments [line items]
Cash and cash equivalents	133	2,903
Trade and other receivables	2,297	3,852
Inventories	6,346	6,361
Prepaid expenses	428	615
Derivative instruments
Restricted cash	137	145
Property, plant and equipment	58,029	56,094
Deferred tax assets
Total assets	67,370	69,970
Trade and other payables	6,627	9,241
Derivative instruments
Loan payable
Glencore pre-payment facility	2,862	5,602
Other long-term liabilities
Deferred revenue
Convertible debenture
Promissory note
Government loan
Post-employment benefit obligations
Decommissioning provision	2,130	1,854
Deferred tax liabilities	459	750
Total liabilities	12,078	17,447
Galena Complex [Member]
Disclosure of operating segments [line items]
Cash and cash equivalents	1,257	14,761
Trade and other receivables	2,769	1,374
Inventories	3,062	2,137
Prepaid expenses	832	524
Derivative instruments
Restricted cash	53	55
Property, plant and equipment	53,701	47,672
Deferred tax assets		343
Total assets	61,674	66,866
Trade and other payables	5,096	3,805
Derivative instruments
Loan payable
Glencore pre-payment facility
Other long-term liabilities	529	566
Deferred revenue
Convertible debenture
Promissory note
Government loan	4,499
Post-employment benefit obligations	13,398	10,137
Decommissioning provision	2,365	2,156
Deferred tax liabilities
Total liabilities	25,887	16,664
Relief Canyon [Member]
Disclosure of operating segments [line items]
Cash and cash equivalents	52	770
Trade and other receivables
Inventories
Prepaid expenses	650	471
Derivative instruments
Restricted cash	3,892	3,807
Property, plant and equipment	147,183	86,201
Deferred tax assets
Total assets	151,777	91,249
Trade and other payables	6,152	6,506
Derivative instruments
Loan payable
Glencore pre-payment facility
Other long-term liabilities	3,557	4,495
Deferred revenue
Convertible debenture
Promissory note
Government loan
Post-employment benefit obligations
Decommissioning provision	3,784	3,755
Deferred tax liabilities
Total liabilities	13,493	14,756
Corporate and Other [Member]
Disclosure of operating segments [line items]
Cash and cash equivalents	3,263	1,564
Trade and other receivables	36	43
Inventories
Prepaid expenses	290	304
Derivative instruments		585
Restricted cash
Property, plant and equipment	406	422
Deferred tax assets
Total assets	3,995	2,918
Trade and other payables	3,256	3,157
Derivative instruments	4,568	4,440
Loan payable	5,564
Glencore pre-payment facility
Other long-term liabilities	533	584
Deferred revenue	23,322	25,007
Convertible debenture	9,953	9,935
Promissory note	5,000
Government loan
Post-employment benefit obligations
Decommissioning provision
Deferred tax liabilities
Total liabilities	$ 52,196	$ 43,123

Segmented and geographic info_4

Segmented and geographic information, and major customers (Statements of Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of operating segments [line items]
Revenue	$ 27,883	$ 58,410
Cost of sales	(31,239)	(56,724)
Depletion and amortization	(7,973)	(13,338)
Care and maintenance costs	(5,947)	(438)
Corporate general and administrative	(9,134)	(9,711)
Transaction costs	(23)	(3,467)
Exploration costs	(4,639)	(2,552)
Accretion on decommissioning provision	(166)	(210)
Interest and financing income (expense)	(253)	(1,790)
Foreign exchange gain (loss)	546	(51)
Gain on disposal of assets	37
Loss on derivative instruments	(160)	(2,457)
Gain on derivative warrant liability		46
Income (loss) before income taxes	(31,068)	(32,282)
Income tax recovery (expense)	1,002	(1,958)
Net loss for the year	(30,066)	(34,240)
Cosala Operations [Member]
Disclosure of operating segments [line items]
Revenue	1,424	39,620
Cost of sales	(1,816)	(27,642)
Depletion and amortization	(2,224)	(9,448)
Care and maintenance costs	(5,501)	(39)
Corporate general and administrative
Transaction costs
Exploration costs	(379)	(1,132)
Accretion on decommissioning provision	(106)	(148)
Interest and financing income (expense)	(243)	(625)
Foreign exchange gain (loss)	189	(289)
Gain on disposal of assets
Loss on derivative instruments
Gain on derivative warrant liability
Income (loss) before income taxes	(8,656)	297
Income tax recovery (expense)	470	(1,277)
Net loss for the year	(8,186)	(980)
Galena Complex [Member]
Disclosure of operating segments [line items]
Revenue	26,459	18,790
Cost of sales	(29,423)	(29,082)
Depletion and amortization	(5,415)	(3,599)
Care and maintenance costs	(446)	(399)
Corporate general and administrative
Transaction costs
Exploration costs	(3,697)	(705)
Accretion on decommissioning provision	(21)	(40)
Interest and financing income (expense)		15
Foreign exchange gain (loss)
Gain on disposal of assets	37
Loss on derivative instruments
Gain on derivative warrant liability
Income (loss) before income taxes	(12,506)	(15,020)
Income tax recovery (expense)	741	(681)
Net loss for the year	(11,765)	(15,701)
Relief Canyon [Member]
Disclosure of operating segments [line items]
Revenue
Cost of sales
Depletion and amortization	(194)	(164)
Care and maintenance costs
Corporate general and administrative
Transaction costs
Exploration costs	(563)	(715)
Accretion on decommissioning provision	(39)	(22)
Interest and financing income (expense)	84	19
Foreign exchange gain (loss)
Gain on disposal of assets
Loss on derivative instruments
Gain on derivative warrant liability
Income (loss) before income taxes	(712)	(882)
Income tax recovery (expense)
Net loss for the year	(712)	(882)
Corporate and Other [Member]
Disclosure of operating segments [line items]
Revenue
Cost of sales
Depletion and amortization	(140)	(127)
Care and maintenance costs
Corporate general and administrative	(9,134)	(9,711)
Transaction costs	(23)	(3,467)
Exploration costs
Accretion on decommissioning provision
Interest and financing income (expense)	(94)	(1,199)
Foreign exchange gain (loss)	357	238
Gain on disposal of assets
Loss on derivative instruments	(160)	(2,457)
Gain on derivative warrant liability		46
Income (loss) before income taxes	(9,194)	(16,677)
Income tax recovery (expense)	(209)
Net loss for the year	$ (9,403)	$ (16,677)

Segmented and geographic info_5

Segmented and geographic information, and major customers (Major Customers) (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Major Customer One [Member]
Disclosure of major customers [line items]
Percentage of revenue	100.00%	100.00%

Capital management (Details)

Capital management (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of objectives, policies and processes for managing capital [abstract]
Equity attributable to shareholders of the Company	$ 169,674	$ 126,291

Contingencies (Details)

Contingencies (Details) - Tax contingent liability [Member] $ in Millions, $ in Millions	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2018MXN ($)	Nov. 30, 2010USD ($)	Nov. 30, 2010MXN ($)
Disclosure of contingent liabilities [line items]
Amount of tax deduction disallowed by Mexican tax authorities					$ 9.9
Amount of tax deduction disallowed by Mexican tax authorities that would be applied against available tax losses			$ 1		4.2
Amount of tax deduction disallowed by Mexican tax authorities, subsequently reversed					4.7
Portion of disputed tax deduction remaining relating to transactions with certain suppliers					5.1
Portion of disputed tax deduction remaining relating to value added taxes					$ 0.9
Accrued liability	$ 1	$ 1
Mexican Peso [Member]
Disclosure of contingent liabilities [line items]
Amount of tax deduction disallowed by Mexican tax authorities						$ 196.8
Amount of tax deduction disallowed by Mexican tax authorities that would be applied against available tax losses				$ 19.9		84.4
Amount of tax deduction disallowed by Mexican tax authorities, subsequently reversed						94.6
Portion of disputed tax deduction remaining relating to transactions with certain suppliers						102.2
Portion of disputed tax deduction remaining relating to value added taxes						$ 17.8

Subsequent events (Details)

Subsequent events (Details) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands	Mar. 03, 2021USD ($)shares	Mar. 02, 2021USD ($)	Feb. 01, 2021USD ($)$ / sharesshares	Jan. 11, 2021USD ($)	Jan. 11, 2021CAD ($)	Jan. 29, 2021USD ($)shares	Jan. 29, 2021CAD ($)$ / sharesshares	Dec. 31, 2020USD ($)shares	Dec. 31, 2019USD ($)shares	Apr. 03, 2019USD ($)$ / sharesshares
Disclosure of non-adjusting events after reporting period [line items]
Issuance of common shares | shares								117,975,579	86,607,305
Gross proceeds from issue								$ 14,276
Sandstorm Gold Ltd [Member]
Disclosure of non-adjusting events after reporting period [line items]
Issuance of common shares | shares										4,784,689
Debentures issued										$ 10,000
Conversion price | $ / shares										$ 2.14
Bought Deal Public Offering [Member]
Disclosure of non-adjusting events after reporting period [line items]
Issuance of common shares | shares						10,253,128	10,253,128
Gross proceeds from issue				$ 26,700		$ 26,700
Bought Deal Public Offering [Member] | Canadian Dollar [Member]
Disclosure of non-adjusting events after reporting period [line items]
Common shares price | $ / shares							$ 3.31
Gross proceeds from issue					$ 33,940		$ 33,940
Convertible Debenture [Member] | Sandstorm Gold Ltd [Member]
Disclosure of non-adjusting events after reporting period [line items]
Issuance of common shares | shares	2,336,448		2,336,448
Issue of convertible debentures	$ 5,000		$ 5,000
Debentures issued			$ 10,000
Conversion price | $ / shares			$ 2.14
Loan Payable with Macquarie [Member]
Disclosure of non-adjusting events after reporting period [line items]
Monthly fixed cash payments		$ 2,900