Americas Gold and Silver (USAS) 40-F 10 Mar 20 2019 FY Annual report (Canada) Financial data

Document and Entity Information

Document and Entity Information	12 Months Ended
	Dec. 31, 2019shares
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, 2019
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2019
Current reporting status	Yes
Entity Emerging Growth Company	true
Entity Transition Period	false
Entity Common Stock, Shares Outstanding	86,607,305
Entity Interactive Data Current	Yes

Consolidated statements of fina

Consolidated statements of financial position - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 19,998	$ 3,464
Trade and other receivables (Note 7)	5,269	7,712
Inventories (Note 8)	7,159	8,136
Prepaid expenses	1,914	1,247
Derivative instruments (Note 24)	585
Asset held-for-sale (Note 9)		6,925
Convertible loan receivable (Note 10)		1,922
Current assets	34,925	29,406
Non-current assets
Restricted cash	4,007	681
Inventories (note 8)	1,339
Property, plant and equipment (Note 9)	190,389	96,442
Deferred tax assets (Note 22)	343	626
Total assets	231,003	127,155
Current liabilities
Trade and other payables	22,709	14,345
Convertible loans payable (Note 10)		2,972
Sandstorm deferred revenue (Note 11)	2,029
Derivative instruments (Note 12)	4,440	35
Glencore pre-payment facility (Note 13)	5,602	5,610
Current liabilities	34,780	22,962
Non-current liabilities
Other long-term liabilities	5,645	689
Sandstorm deferred revenue (Note 11)	22,978
Convertible debenture (Note 12)	9,935
Glencore pre-payment facility (Note 13)		5,500
Post-employment benefit obligations (Note 14)	10,137	8,174
Decommissioning provision (Note 15)	7,765	3,791
Derivative warrant liability (Note 10)		711
Deferred tax liabilities (Note 22)	750	1,132
Total liabilities	91,990	42,959
Equity
Share capital (Note 16)	284,673	212,943
Equity reserve	38,061	34,837
Foreign currency translation reserve	6,695	6,541
Deficit	(203,138)	(170,125)
Attributable to shareholders of the Company	126,291	84,196
Non-controlling interests (Note 18)	12,722
Total equity	139,013	84,196
Total liabilities and equity	$ 231,003	$ 127,155

Consolidated statements of loss

Consolidated statements of loss and comprehensive loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Profit or loss [abstract]
Revenue (Note 19)	$ 58,410	$ 68,354
Cost of sales (Note 20)	(56,724)	(52,115)
Depletion and amortization (Note 9)	(13,338)	(10,572)
Care and maintenance costs	(438)	(1,071)
Corporate general and administrative (Note 21)	(9,711)	(6,720)
Transaction costs (Note 6)	(3,467)	(871)
Exploration costs	(2,552)	(2,695)
Accretion on decommissioning provision	(210)	(196)
Interest and financing expense	(1,790)	(1,409)
Foreign exchange gain (loss)	(51)	(231)
Gain on disposal of assets (Note 9)		879
Gain (loss) on derivative instruments (Note 12 and 24)	(2,457)	865
Gain on derivative warrant liability	46	590
Write-down of assets (Note 9)		(3,806)
Contingency on value added taxes (Note 27)		(1,012)
Loss before income taxes	(32,282)	(10,010)
Income tax expense (Note 22)	(1,958)	(668)
Net loss	(34,240)	(10,678)
Attributable to:
Shareholders of the Company	(32,653)	(9,870)
Non-controlling interests	(1,587)
Net loss	(34,240)	(9,870)
Items that will not be reclassified to net loss
Actuarial gain (loss) on post-employment benefit obligations (net of tax)	(1,051)	551
Items that may be reclassified subsequently to net loss
Foreign currency translation reserve	154	257
Other comprehensive income (loss)	(897)	808
Comprehensive loss	(35,137)	(9,870)
Attributable to:
Shareholders of the Company	(33,550)	(9,870)
Non-controlling interests	(1,587)
Comprehensive loss	$ (35,137)	$ (9,870)
Loss per share attributable to shareholders of the Company
Basic and diluted	$ (0.46)	$ (0.25)
Weighted average number of common shares outstanding
Basic and diluted (Note 17)	71,421,798	42,639,530

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, 2017	$ 207,012		$ 34,760	$ 6,284	$ (159,998)	$ 88,058		$ 88,058
Balance, shares at Dec. 31, 2017	41,497
Net loss for the year					(10,678)	(10,678)		(10,678)
Other comprehensive income (loss) for the year				257	551	808		808
Share-based payments			2,149			2,149		2,149
Exercise of options and warrants	$ 5,931		(2,072)			3,859		3,859
Exercise of options and warrants, shares	1,905
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)
Joint venture agreement (Note 18)					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 16)	$ 7,371					7,371		7,371
Subscription agreement with Sandstorm Gold Ltd. (Note 16), shares	4,785
Conversion of convertible loans payable (Note 10)	$ 4,284					4,284		4,284
Conversion of convertible loans payable (Note 10), 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 (Note 10)			680			680		680
Non-brokered private placement (Note 16)	$ 9,468		141			9,609		9,609
Non-brokered private placement (Note 16), 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

Consolidated statements of cash

Consolidated statements of cash flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating activities
Net loss for the year	$ (34,240)	$ (10,678)
Adjustments for the following items:
Depletion and amortization	13,338	10,572
Income tax expense	1,958	260
Accretion and decommissioning costs	210	196
Share-based payments	3,721	2,097
Unrealized loss (gain) on non-current assets	(17)	21
Provision on other long-term liabilities	50	9
Deferred costs on convertible loans	745	335
Deferred costs on convertible debenture	62
Sandstorm deferred revenue	25,000
Non-cash transaction costs	899
Cash received from alternative minimum tax credits	344
Cash received from (payments to) bond on decommissioning costs	485	(370)
Net charges on post-employment benefit obligations	170	107
Loss (gain) on derivative instruments	3,982	(147)
Gain on derivative warranty liability	(46)	(590)
Write-down of assets		3,806
Contingency on value added taxes		1,012
Total adjustments	16,661	6,630
Changes in non-cash working capital items:
Trade and other receivables	2,443	(1,081)
Inventories	(362)	1,230
Prepaid expenses	(58)	(378)
Trade and other payables	(4,541)	2,237
Net cash generated from operating activities	14,143	8,638
Investing activities
Expenditures on property, plant and equipment	(11,554)	(14,893)
Development costs on Relief Canyon Mine	(22,775)
Cash received from joint venture agreement	15,000
San Felipe property option payments	(2,250)	(2,033)
Investment in convertible loan receivable	(800)	(1,892)
Cash from acquisition of Pershing Gold Corporation	241
Net cash used in investing activities	(22,138)	(18,818)
Financing activities
Repayments to Glencore pre-payment facility	(5,508)	(3,890)
Payments to lease liabilities	(284)
Financing from convertible loan payable		4,296
Financing from convertible debenture	10,000
Share issuance from private placement	9,609
Share issuance from subscription agreement	7,371
Proceeds from exercise of options and warrants	3,188	3,859
Net cash generated from financing activities	24,376	4,265
Effect of foreign exchange rate changes on cash	153	54
Increase (decrease) in cash and cash equivalents	16,534	(5,861)
Cash and cash equivalents, beginning of year	3,464	9,325
Cash and cash equivalents, end of year	19,998	3,464
Interest paid during the year	$ 1,148	$ 1,082

Consolidated statements of ca_2

Consolidated statements of cash flows (Supplemental Disclosures) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Cash and cash equivalents consist of:
Cash	$ 19,998	$ 3,464
Term deposits
Cash and cash equivalents	$ 19,998	$ 3,464

Corporate information

Corporate information	12 Months Ended
	Dec. 31, 2019
Corporate information [abstract]
Corporate information	1. Corporate information Americas Gold and Silver Corporation (formerly Americas 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, 2019 were approved and authorized for issue by the Board of Directors of the Company on March 9, 2020.

Basis of presentation

Basis of presentation	12 Months Ended
	Dec. 31, 2019
Basis of presentation [abstract]
Basis of presentation	2. Basis of presentation The Company prepares its consolidated financial statements 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 other than with regards to the policies that have been adopted for the first time during the year ended December 31, 2019 (see Note 5). 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, 2019
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 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 non-controlling non-controlling 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 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 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 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 and physical counts. 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 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 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) Non-producing The Company follows the method of accounting for its non-producing 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) Plant and equipment 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) Impairment The Company reviews and evaluates the carrying values of its tangible and intangible assets to determine whether there is an indication 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 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. 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 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, 2019
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) Reserves and resources 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) Depletion and amortization Mining properties are depleted using the unit-of-production 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) Decommissioning provision 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) Share-based payments 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) Income taxes 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.

Changes in accounting policies

Changes in accounting policies and recent accounting pronouncements	12 Months Ended
	Dec. 31, 2019
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 Company has adopted the following new accounting standard effective for annual periods beginning on or after January 1, 2019: (i) Leases IFRS 16 - Leases right-of-use low-value From January 1, 2019, the Company assesses whether a contract is or contains a lease at inception which is the right to control the use of an identified asset for a period of time in exchange for consideration. A right-of-use right-of-use low-value See Note 24 for the accounting of IFRS 16 on adoption and during the year ended December 31, 2019.

Acquisition of Pershing Gold Co

Acquisition of Pershing Gold Corporation	12 Months Ended
	Dec. 31, 2019
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 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 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 the date of these consolidated financial statements, the determination of fair value of assets and liabilities acquired has been finalized. Acquisition related expenses of $2.5 million have been charged to transaction costs in the consolidated statements of loss and comprehensive loss for the year ended December 31, 2019. These consolidated financial statements include Pershing Gold results from April 3, 2019 to December 31, 2019. The revenue from the sale of precious metals and net loss before income taxes included in the consolidated statements of loss and comprehensive loss since April 3, 2019 contributed by Pershing Gold was nil and $1.4 million, respectively. If Pershing Gold had been consolidated from January 1, 2019, on a pro forma basis, the consolidated statements of loss and comprehensive loss would have included revenue of nil and net loss before income taxes of $3.2 million. In determining these amounts, management has assumed that the fair value adjustments that arose on the date of acquisition would have been the same if the acquisition had occurred on January 1, 2019.

Trade and other receivables

Trade and other receivables	12 Months Ended
	Dec. 31, 2019
Trade and other receivables [abstract]
Trade and other receivables	7. Trade and other receivables December 31, December 31, Trade receivables $ 4,560 $ 6,126 Value added taxes receivable 636 1,465 Other receivables 73 121 $ 5,269 $ 7,712

Inventories

Inventories	12 Months Ended
	Dec. 31, 2019
Classes of current inventories [abstract]
Inventories	8. Inventories December 31, December 31, Concentrates $ 1,292 $ 941 Current ore stockpiles 497 1,602 Spare parts and supplies 5,370 5,593 7,159 8,136 Long-term ore stockpiles 1,339 — $ 8,498 $ 8,136 The amount of inventories recognized as an expense was $56.7 million during the year ended December 31, 2019 (2018: $52.1 million). During the year ended December 31, 2019, the concentrates and ore stockpiles, and spare parts and supplies write-down (recovery) to net realizable value included in cost of sales was $1.2 million (2018: $0.6 million) and nil (2018: ($0.2) million), respectively.

Property, plant and equipment

Property, plant and equipment	12 Months Ended
	Dec. 31, 2019
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, 2018 $ 104,362 $ 58,467 $ 48,808 $ — $ 84 $ 211,721 Asset additions 9,420 — 5,734 — 11 15,165 Property purchase option acquired — 2,633 — — — 2,633 Change in decommissioning provision (354 ) — — — — (354 ) Reclassification — (61,100 ) — — — (61,100 ) Balance at December 31, 2018 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 Accumulated depreciation and depletion Balance at January 1, 2018 $ 34,848 $ 50,502 $ 26,031 $ — $ 39 $ 111,420 Depreciation/depletion for the year 6,762 — 3,800 — 10 10,572 Write-down of equipment — — 133 — — 133 Reclassification — (50,502 ) — — — (50,502 ) Balance at December 31, 2018 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 Carrying value at December 31, 2018 $ 71,818 $ — $ 24,578 $ — $ 46 $ 96,442 at December 31, 2019 $ 70,906 $ 57,344 $ 54,683 $ 7,396 $ 60 $ 190,389 As at January 1, 2019, the Company recognized $0.9 million of right-of-use 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 held-for-sale Non-current The Company recognized a gain of $0.8 million in the second quarter of 2018 related to proceeds received through an insurance claim for equipment damaged from mining operations during fiscal 2017. The amount of borrowing costs capitalized as property, plant and equipment was $0.9 million during the year ended December 31, 2019 (2018: nil). The carrying amount of property and equipment from the non-producing

Convertible loans receivable an

Convertible loans receivable and payable	12 Months Ended
	Dec. 31, 2019
Disclosure of convertible loans receivable and payable [abstract]
Convertible loans receivable and payable	10. Convertible loans receivable and payable On October 1, 2018, in connection with the acquisition with Pershing Gold (see Note 6), the Company entered into short-term secured convertible loan agreements with Mr. Pierre Lassonde and two other lenders (the “Lenders”) for $5.5 million CAD due July 1, 2019 with interest payable at 15% per annum (the “Convertible Loans Payable”). The Convertible Loans Payable had an extension option to mature on October 1, 2019 with interest payable at 18% per annum upon election by the Company. The Company recorded a derivative asset of $0.2 million on initial recognition based on the estimated fair value of the extension option and recognized a loss of $0.2 million in the consolidated statements of loss and comprehensive loss for the year ended December 31, 2019 as a result of the change in estimated fair value of the extension option (2018: $0.1 million loss). The Convertible Loans Payable had an option to convert into common shares of the Company upon mutual election at a conversion price determined as the lower of $3.1231 CAD or the volume-weighted average price of the Company’s common shares for five trading days immediately preceding the date of exercise. On initial recognition and as at December 31, 2018, the fair value of the conversion option was nil. Interest expense of $0.3 million was recorded in the consolidated statements of loss and comprehensive loss for the year ended December 31, 2019 in connection with the Convertible Loans Payable (2018: $0.2 million). On April 3, 2019, the Company along with the Lenders mutually elected to convert the Company’s outstanding Convertible Loans Payable into common shares of the Company in accordance with the Convertible Loans Payable agreement terms, resulting in the issuance of 2,763,518 of the Company’s common shares priced at approximately $2.09 CAD per share. Under the terms of the Convertible Loans Payable, the Company issued 1,074,999 warrants to the Lenders where each warrant is exercisable for one common share at an exercise price of $3.1231 CAD for a period of 5 years. The holders of the warrants had a cashless exercise option to receive common shares of the Company equal to the fair value of the warrants, in lieu of exercising the warrants for cash. If so elected, the fair value of the warrants was determined by multiplying the number of warrants to be exercised by the market price of a common share less the warrants exercise price with the difference divided by the market price of the common share. There would be variability in the number of shares issued per warrant if a warrant holder exercises this option. The Company recorded a derivative warrant liability on initial recognition of $1.3 million based on the estimated fair value of the warrants determined using the Black-Scholes warrant pricing model and recognized nil and a $0.1 million gain in the consolidated statements of loss and comprehensive loss for the year ended December 31, 2019 as a result of the change in estimated fair value of the derivative warrant liability (2018: $0.6 million gain). The derivative warrant liability was reclassified to equity reserve at fair value of $0.7 million during the second quarter of 2019 as the terms of the warrants were amended to remove the cashless exercise option available to the holders. The net proceeds of the Convertible Loans Payable were used by the Company to fund a short-term secured first lien convertible loan to Pershing Gold due June 1, 2019 with interest payable at 16% per annum (the “Convertible Loan Receivable”) to address Pershing Gold’s near-term working capital requirements. The Company funded $2.8 million of the Convertible Loan Receivable to Pershing Gold prior to acquisition on April 3, 2019. Subsequent to the acquisition, the Convertible Loan Receivable was consolidated on presentation with Pershing Gold’s respective convertible loan payable to the Company. Further details of the Convertible Loans Payable and Convertible Loan Receivable are disclosed in Note 9 of the consolidated financial statements for the year ended December 31, 2018.

Sandstorm deferred revenue

Sandstorm deferred revenue	12 Months Ended
	Dec. 31, 2019
Accruals and deferred income [abstract]
Sandstorm deferred revenue	11. Sandstorm 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 Pershing Gold’s Relief Canyon Mine. The Purchase Agreement consists of a combination of fixed and variable deliveries from the Relief Canyon Mine. As at December 31, 2019, the Company obtained the $25 million in advances from Sandstorm through the Purchase Agreement. 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 Purchase Agreement. 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 Purchase Agreement. 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, 2019, the fair value of the repurchase option was nil. Interest expense of $0.5 million was capitalized as borrowing costs to property, plant and equipment for the year ended December 31, 2019 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, 2019: Advances received $ 25,000 Deferred transaction costs (466 ) Accretion on significant financing component 473 Deferred revenue 25,007 Less: current portion (2,029 ) Non-current $ 22,978

Convertible debenture

Convertible debenture	12 Months Ended
	Dec. 31, 2019
Disclosure of classes of share capital [abstract]
Convertible debenture	12. 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 $4.4 million in the consolidated statements of loss and comprehensive loss for the year ended December 31, 2019 as a result of the change in the estimated fair value of the conversion and prepayment option. Interest expense of $0.4 million was capitalized as borrowing costs to property, plant and equipment for the year ended December 31, 2019 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

Glencore pre-payment facility

Glencore pre-payment facility	12 Months Ended
	Dec. 31, 2019
Disclosure of Pre-payment facility [abstract]
Glencore pre-payment facility	13. Glencore pre-payment On January 29, 2017, the Company entered into a pre-payment “Pre-Payment Pre-Payment Pre-Payment

Post-employment benefit obligat

Post-employment benefit obligations	12 Months Ended
	Dec. 31, 2019
Disclosure of defined benefit plans [abstract]
Post-employment benefit obligations	14. Post-employment benefit obligations The Company maintains two non-contributory The amounts recognized in the consolidated statements financial position are as follows: December 31, December 31, 2019 2018 Present value of funded obligations $ 29,519 $ 25,068 Fair value of plan assets 19,382 16,894 Deficit of funded plans $ 10,137 $ 8,174 The movements in the defined benefit obligations are as follows: December 31, December 31, 2019 2018 Obligations, beginning of year $ 25,068 $ 26,730 Current service costs 579 755 Interest costs 1,048 965 Benefits paid (1,043 ) (960 ) Actuarial (gain) loss 3,867 (2,422 ) Obligations, end of year $ 29,519 $ 25,068 The movements in the fair value of plan assets are as follows: December 31, December 31, 2019 2018 Assets, beginning of year $ 16,894 $ 18,112 Return on assets 714 685 Actuarial gain (loss) 2,074 (1,871 ) Employer contributions 743 928 Benefits paid (1,043 ) (960 ) Assets, end of year $ 19,382 $ 16,894 The amounts recognized in the consolidated statements of loss and comprehensive loss are as follows: December 31, December 31, 2019 2018 Current service costs and interest costs included in cost of sales $ 1,627 $ 1,720 The principal actuarial assumptions are as follows: December 31, December 31, 2019 2018 Discount rate (expense) 4.25 % 3.75 % Discount rate (year end disclosures) 3.25 % 4.25 % Future salary increases (salaried plan only) 5.00 % 5.00 % A 1% decrease in discount rate would have resulted in approximately $4.9 million increase in the defined benefit obligation from $29.5 million to $34.4 million as at December 31, 2019 (2018: $3.7 million increase in the defined benefit obligation from $25.1 million to $28.8 million). A 1% increase in future salary increases would have resulted in approximately $0.1 million increase in the defined benefit obligation from $29.5 million to $29.6 million as at December 31, 2019 (2018: $0.1 million increase in the defined benefit obligation from $25.1 million to $25.2 million). Plan assets are fully comprised of pooled or mutual funds. The expected return on plan assets at 4.2% (2018: 3.8%) 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, 2020 are approximately $1.2 million. For the year ended December 31, 2019, the actuarial losses charged to other comprehensive loss are $1.8 million (2018: actuarial gains of $0.6 million).

Decommissioning provision

Decommissioning provision	12 Months Ended
	Dec. 31, 2019
Disclosure of other provisions [abstract]
Decommissioning provision	15. 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 $10.2 million over a period of 1 to 13 years, and discounted using a risk-free rate varying from 1.6% to 7.2%. December 31, December 31, 2019 2018 Provisions, beginning of year $ 3,791 $ 3,948 Acquisition of Pershing Gold 1,223 — Decommissioning costs and change in estimates 2,541 (353 ) Accretion on decommissioning provision 210 196 Provisions, end of year $ 7,765 $ 3,791

Share capital

Share capital	12 Months Ended
	Dec. 31, 2019
Disclosure of classes of share capital [abstract]
Share capital	16. 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 On July 26, 2019, the Company closed a non-brokered non-brokered a. Authorized Authorized share capital consists of an unlimited number of common and preferred shares. December 31, December 31, 2019 2018 Issued 86,607,305 (2018: 43,402,434) common shares $ 284,512 $ 212,943 103,824 (2018: nil) preferred shares 161 — $ 284,673 $ 212,943 Each non-voting one-to-one non-voting 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, 2019 2018 Weighted Weighted average average exercise exercise Number price Number price (thousands) CAD (thousands) CAD Balance, beginning of year 3,160 $ 3.77 2,316 $ 3.06 Granted 5,915 2.86 1,435 4.54 Exercised (1,014 ) 2.33 (471 ) 2.29 Expired (40 ) 2.39 (120 ) 5.14 Balance, end of year 8,021 $ 3.29 3,160 $ 3.77 The following table summarizes information on stock options outstanding and exercisable as at December 31, 2019: 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 2.27 3,292 $ 2.39 1,012 $ 2.39 3.01 to 4.00 3.63 3,325 3.62 1,702 3.70 4.01 to 5.00 1.01 1,364 4.58 920 4.58 5.01 to 6.00 1.07 40 5.55 27 5.55 8,021 $ 3.29 3,661 $ 3.57 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, 2019 was $0.98 (2018: $1.47). 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, 2019 2018 Expected stock price volatility (1) 59 % 59 % Risk free interest rate 1.55 % 1.76 % Expected life 4 years 3 years Expected forfeiture rate 2.66 % 3.34 % Expected dividend yield 0 % 0 % Share-based payments included in cost of sales $ — $ — Share-based payments included in general and administrative expenses 3,314 2,042 Total share-based payments $ 3,314 $ 2,042 (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, 2019 are as follows: Number of warrants Exercise price (CAD) Issuance date Expiry 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 5,264,520 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, 2019, 89,196 (2018: 86,692) restricted share units are outstanding at an aggregate value of $0.3 million (2018: $0.1 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, 2019, 323,333 (2018: 337,137) 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, 2019
Weighted average basic and diluted number of common shares outstanding [abstract]
Weighted average basic and diluted number of common shares outstanding	17. Weighted average basic and diluted number of common shares outstanding Year ended Year ended December 31, December 31, 2019 2018 Basic weighted average number of shares 71,421,798 42,639,530 Effect of dilutive shares, options and warrants — — Diluted weighted average number of shares 71,421,798 42,639,530 Diluted weighted average number of common shares for the year ended December 31, 2019 excludes 103,824 anti-dilutive preferred shares (2018: nil), 8,020,790 anti-dilutive stock options (2018: 3,159,993) and 5,264,520 anti-dilutive warrants (2018: 4,858,845).

Non-controlling interests

Non-controlling interests	12 Months Ended
	Dec. 31, 2019
Non-controlling Interests
Non-controlling interests	18. Non-controlling The Company entered into a joint venture agreement with Mr. Eric Sprott effective October 1, 2019 for 40% non-controlling The Company recognized non-controlling non-controlling non-controlling

Revenue

Revenue	12 Months Ended
	Dec. 31, 2019
Disclosure of disaggregation of revenue from contracts with customers [abstract]
Revenue	19. Revenue The following is a disaggregation of revenue categorized by commodities sold: Year ended Year ended December 31, December 31, 2019 2018 Silver Provisional sales revenue $ 21,246 $ 22,400 Derivative pricing adjustments 179 (299 ) 21,425 22,101 Zinc Provisional sales revenue $ 48,309 $ 44,148 Derivative pricing adjustments (1,939 ) (2,022 ) 46,370 42,126 Lead Provisional sales revenue $ 26,061 $ 30,871 Derivative pricing adjustments (550 ) (513 ) 25,511 30,358 Other by-products Provisional sales revenue $ 597 $ 542 Derivative pricing adjustments (238 ) (11 ) 359 531 Total provisional sales revenue $ 96,213 $ 97,961 Total derivative pricing adjustments (2,548 ) (2,845 ) Gross revenue $ 93,665 $ 95,116 Treatment and selling costs (35,255 ) (26,762 ) $ 58,410 $ 68,354 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 24). 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, 2019
Non-controlling Interests
Cost of sales	20. 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, 2019 2018 Salaries and employee benefits $ 27,150 $ 24,942 Raw materials and consumables 22,144 18,951 Utilities 5,336 4,539 Other costs 2,456 2,453 Changes in inventories (362 ) 1,230 $ 56,724 $ 52,115

Corporate general and administr

Corporate general and administrative expenses	12 Months Ended
	Dec. 31, 2019
Corporate general and administrative expenses [abstract]
Corporate general and administrative expenses	21. 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, 2019 2018 Salaries and employee benefits $ 2,847 $ 2,160 Directors’ fees 379 326 Share-based payments 3,671 1,990 Professional fees 809 700 Office and general 2,005 1,544 $ 9,711 $ 6,720

Income taxes

Income taxes	12 Months Ended
	Dec. 31, 2019
Income Taxes [abstract]
Income taxes	22. Income taxes The components of income tax expense are as follows: Year ended Year ended December 31, December 31, 2019 2018 Current income tax expense $ 1,659 $ 408 Deferred income tax expense 299 260 Income tax expense $ 1,958 $ 668 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, 2019 2018 Tax recovery at statutory rates $ (8,555 ) $ (2,744 ) Mexican mining royalty 128 668 Impact of foreign tax rates (388 ) (107 ) Non-deductible 2,741 927 Losses not recognized 8,032 1,924 Income tax expense $ 1,958 $ 668 The Company’s net deferred tax asset relates to the U.S. alternative minimum tax credits available: Year ended Year ended December 31, December 31, 2019 2018 Alternative minimum tax credits $ 343 $ 626 Provisions and reserves 2,101 — Net operating losses 4,230 742 Total deferred tax assets 6,674 1,368 Property, plant and equipment (6,331 ) (742 ) Net deferred tax assets $ 343 $ 626 The Company’s net deferred tax liability relates to the Mexican mining royalty and arises principally from the following: Year ended Year ended December 31, December 31, 2019 2018 Property, plant and equipment $ 851 $ 878 Other 329 607 Total deferred tax liabilities 1,180 1,485 Provisions and reserves (430 ) (353 ) Net deferred tax liabilities $ 750 $ 1,132 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, 2019 2018 Property, plant and equipment $ 19,288 $ 5,600 Mexican tax losses (expiring in 2023 - 2029) 25,599 29,476 Canadian tax losses (expiring in 2027 - 2039) 19,051 34,053 U.S. tax losses (expiring in 2020 - 2037) 31,956 31,159 U.S. tax losses (no expiry) 20,779 6,802 Provisions and other 29,207 26,479 Deferred Mexican mining royalty 750 1,838 $ 146,630 $ 135,407

Key management transactions

Key management transactions	12 Months Ended
	Dec. 31, 2019
Disclosure of transactions between related parties [abstract]
Key management transactions	23. 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, 2019 2018 Salaries and benefits $ 1,565 $ 1,142 Directors’ fees 379 326 Share-based payments 3,163 1,633

Financial risk management

Financial risk management	12 Months Ended
	Dec. 31, 2019
Financial risk management [abstract]
Financial risk management	24. 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 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, 2019, the Company’s exposure to credit risk with respect to trade receivables amounts to $4.6 million (2018: $6.1 million). The Company believes credit risk for Mexican Value Added Taxes of $0.6 million (2018: $1.5 million) is not significant as they relate to current amounts receivable from Mexican taxation authorities. There is no significant provision recorded for expected credit losses at December 31, 2019 and 2018. (ii) Liquidity risk 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, existing 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, 2019 Less than Over Total 1 year 2-3 years 4-5 years 5 years Trade and other payables $ 22,709 $ 22,709 $ — $ — $ — Glencore pre-payment 5,602 5,602 — — — Interest on Glencore pre-payment 199 199 — — — Convertible debenture 10,000 — — 10,000 — Interest on convertible debenture 1,955 602 1,200 153 — Projected pension contributions 6,937 1,185 2,619 2,078 1,055 Decommissioning provision 10,294 15 189 — 10,090 Other long-term liabilities 5,645 — 5,095 22 528 $ 63,341 $ 30,312 $ 9,103 $ 12,253 $ 11,673 Minimum lease payments in respect to lease liabilities are included in trade and other payables and other long-term liabilities as follows: December 31, 2019 Less than Over Total 1 year 2-3 years 4-5 years 5 years Trade and other payables $ 2,886 $ 2,886 $ — $ — $ — Other long-term liabilities 6,413 — 6,391 22 — $ 9,299 $ 2,886 $ 6,391 $ 22 $ — The following table summarizes the continuity of the Company’s total lease liabilities discounted using an incremental borrowing rate ranging from 6% to 10% applied during the year: Operating lease obligations as at December 31, 2018 $ 1,055 Practical expedients applied (538 ) Incremental borrowing rate discount (53 ) Additions 63 IFRS 16 adoption 527 Total lease liabilities as at January 1, 2019 270 Additions 6,478 Lease principal payments (234 ) Lease interest payments (50 ) Accretion on lease liabilities 34 Total lease liabilities as at December 31, 2019 $ 7,025 (iii) Market risk 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 (2) Currency risk As at December 31, 2019, 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, 2019 CAD MXP Cash and cash equivalents $ 444 $ 299 Trade and other receivables 43 663 Trade and other payables 2,204 8,065 As at December 31, 2019, the CAD/USD and MXP/USD exchange rates were 1.30 and 18.85 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, 2019 is included in the following table: CAD/USD MXP/USD Exchange rate Exchange rate +/- 10% +/- 10% Approximate impact on: Net loss $ 1,441 $ 1,932 Other comprehensive loss (41 ) 26 The Company may, from time to time, employ derivative financial instruments to manage exposure to fluctuations in foreign currency exchange rates. At December 31, 2019, the Company had non-hedge non-hedge (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, 2019, 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 $0.5 million (2018: $0.6 million). At December 31, 2019, the Company had non-hedge non-hedge Net amount of gain or loss on derivative instruments from non-hedge 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: The principal portion of the convertible debenture is 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 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, 2019 2018 Level 1 Cash and cash equivalents $ 19,998 $ 3,464 Restricted cash 4,007 681 Level 2 Trade and other receivables 5,269 7,712 Derivative instruments 3,855 35 Convertible loan receivable — 1,977 Convertible loans payable — 4,032 Convertible debenture 9,935 — Glencore pre-payment 5,602 11,110 Derivative warrant liability — 711

Segmented and geographic inform

Segmented and geographic information, and major customers	12 Months Ended
	Dec. 31, 2019
Disclosure of operating segments [abstract]
Segmented and geographic information, and major customers	25. 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, including a recently acquired Relief Canyon segment from Pershing Gold (see Note 6). 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, 2019 and 2018 were earned in Mexico and the United States. The following segmented information is presented as at and during years ended December 31, 2019 and 2018. The Cosalá Operations segment operates in Mexico while the Galena Complex and Relief Canyon segments operate in the United States. As at December 31, 2019 As at December 31, 2018 Cosalá Galena Relief Corporate Total Cosalá Galena Corporate Total Cash and cash equivalents $ 2,903 $ 14,761 $ 770 $ 1,564 $ 19,998 $ 3,305 $ (2 ) $ 161 $ 3,464 Trade and other receivables 3,852 1,374 — 43 5,269 6,353 1,274 85 7,712 Inventories 6,361 2,137 — — 8,498 5,844 2,292 — 8,136 Prepaid expenses 615 524 471 304 1,914 506 535 206 1,247 Derivative instruments — — — 585 585 — — — — Asset held-for-sale — — — — — 6,925 — — 6,925 Convertible loan receivable — — — — — — — 1,922 1,922 Restricted cash 145 55 3,807 — 4,007 139 541 1 681 Property, plant and equipment 56,094 47,672 86,201 422 190,389 52,540 43,856 46 96,442 Deferred tax assets — 343 — — 343 — 626 — 626 Total assets $ 69,970 $ 66,866 $ 91,249 $ 2,918 $ 231,003 $ 75,612 $ 49,122 $ 2,421 $ 127,155 Trade and other payables $ 9,241 $ 3,805 $ 6,506 $ 3,157 $ 22,709 $ 8,094 $ 3,614 $ 2,637 $ 14,345 Derivative instruments — — — 4,440 4,440 — — 35 35 Convertible loans payable — — — — — — — 2,972 2,972 Other long-term liabilities — 566 4,495 584 5,645 — 632 57 689 Sandstorm deferred revenue — — — 25,007 25,007 — — — — Convertible debenture — — — 9,935 9,935 — — — — Glencore pre-payment 5,602 — — — 5,602 11,110 — — 11,110 Post-employment benefit obligations — 10,137 — — 10,137 — 8,174 — 8,174 Decommissioning provision 1,854 2,156 3,755 — 7,765 1,760 2,031 — 3,791 Derivative warrant liability — — — — — — — 711 711 Deferred tax liabilities 750 — — — 750 1,132 — — 1,132 Total liabilities $ 17,447 $ 16,664 $ 14,756 $ 43,123 $ 91,990 $ 22,096 $ 14,451 $ 6,412 $ 42,959 Year ended December 31, 2019 Year ended December 31, 2018 Cosalá Galena Relief Corporate Total Cosalá Galena Corporate Total Revenue $ 39,620 $ 18,790 $ — $ — $ 58,410 $ 41,506 $ 26,848 $ — $ 68,354 Cost of sales (27,642 ) (29,082 ) — — (56,724 ) (23,283 ) (28,832 ) — (52,115 ) Depletion and amortization (9,448 ) (3,599 ) (164 ) (127 ) (13,338 ) (7,200 ) (3,362 ) (10 ) (10,572 ) Care and maintenance costs (39 ) (399 ) — — (438 ) (39 ) (1,032 ) — (1,071 ) Corporate general and administrative — — — (9,711 ) (9,711 ) — — (6,720 ) (6,720 ) Transaction costs — — — (3,467 ) (3,467 ) — — (871 ) (871 ) Exploration costs (1,132 ) (705 ) (715 ) — (2,552 ) (2,501 ) (194 ) — (2,695 ) Accretion on decommissioning provision (148 ) (40 ) (22 ) — (210 ) (149 ) (47 ) — (196 ) Interest and financing income (expense) (625 ) 15 19 (1,199 ) (1,790 ) (972 ) — (437 ) (1,409 ) Foreign exchange gain (loss) (289 ) — — 238 (51 ) (295 ) — 64 (231 ) Gain on disposal of assets — — — — — 879 — — 879 Gain (loss) on derivative instruments — — — (2,457 ) (2,457 ) 224 165 476 865 Gain on derivative warrant liability — — — 46 46 — — 590 590 Write-down of assets — — — — — (3,729 ) (77 ) — (3,806 ) Contingency on value added taxes — — — — — (1,012 ) — — (1,012 ) Income (loss) before income taxes 297 (15,020 ) (882 ) (16,677 ) (32,282 ) 3,429 (6,531 ) (6,908 ) (10,010 ) Income tax expense (1,277 ) (681 ) — — (1,958 ) (668 ) — — (668 ) Net income (loss) for the year $ (980 ) $ (15,701 ) $ (882 ) $ (16,677 ) $ (34,240 ) $ 2,761 $ (6,531 ) $ (6,908 ) $ (10,678 ) c. Major customers The Company sold concentrates to one customer during the year ended December 31, 2019 (2018: two customers) accounting for 100% (2018: 78% and 22%) of revenues.

Capital management

Capital management	12 Months Ended
	Dec. 31, 2019
Disclosure of objectives, policies and processes for managing capital [abstract]
Capital management	26. 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, 2019, and 2018, the Company is not subject to any externally imposed capital requirements. The following summarizes the Company’s capital structure: December 31, December 31, 2019 2018 Equity attributable to shareholders of the Company $ 126,291 $ 84,196

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2019
Disclosure of contingent liabilities [abstract]
Contingencies	27. 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 $10.4 million (MXP 196.8 million), of which $4.5 million (MXP 84.4 million) would be applied against available tax losses. The Company appealed this reassessment and the Mexican tax authorities subsequently reversed $5.0 million (MXP 94.6 million) of their original reassessment. The remaining $5.4 million (MXP 102.2 million) consists of $4.5 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 $4.5 million (MXP 84.4 million), if denied, would be offset by available tax losses. The Company accrued $1.1 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.

Subsequent events

Subsequent events	12 Months Ended
	Dec. 31, 2019
Disclosure of non-adjusting events after reporting period [abstract]
Subsequent events	28. Subsequent events On January 16, 2020, the Company entered into a $5 million precious metals delivery and purchase agreement with Macquarie Bank Ltd. for working capital purposes at Relief Canyon Mine. The $5 million advance will be settled through fixed deliveries of gold production from Relief Canyon Mine during the second half of 2020. On February 18, 2020, the Company entered into an at-the-market time-to-time

Summary of significant accoun_2

Summary of significant accounting policies (Policies)	12 Months Ended
	Dec. 31, 2019
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 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 non-controlling non-controlling 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
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 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
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 and physical counts. 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
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 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) Non-producing The Company follows the method of accounting for its non-producing 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) Plant and equipment 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) Impairment The Company reviews and evaluates the carrying values of its tangible and intangible assets to determine whether there is an indication 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 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.
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
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, 2019
Disclosure of detailed information about business combination [abstract]
Schedule of Consideration Paid	The consideration paid is calculated as follows: Non-diluted 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 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, 2019
Trade and other receivables [abstract]
Schedule of Trade and Other Receivables	December 31, December 31, Trade receivables $ 4,560 $ 6,126 Value added taxes receivable 636 1,465 Other receivables 73 121 $ 5,269 $ 7,712

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2019
Classes of current inventories [abstract]
Schedule of Inventories	December 31, December 31, Concentrates $ 1,292 $ 941 Current ore stockpiles 497 1,602 Spare parts and supplies 5,370 5,593 7,159 8,136 Long-term ore stockpiles 1,339 — $ 8,498 $ 8,136

Property, plant and equipment (

Property, plant and equipment (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2018 $ 104,362 $ 58,467 $ 48,808 $ — $ 84 $ 211,721 Asset additions 9,420 — 5,734 — 11 15,165 Property purchase option acquired — 2,633 — — — 2,633 Change in decommissioning provision (354 ) — — — — (354 ) Reclassification — (61,100 ) — — — (61,100 ) Balance at December 31, 2018 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 Accumulated depreciation and depletion Balance at January 1, 2018 $ 34,848 $ 50,502 $ 26,031 $ — $ 39 $ 111,420 Depreciation/depletion for the year 6,762 — 3,800 — 10 10,572 Write-down of equipment — — 133 — — 133 Reclassification — (50,502 ) — — — (50,502 ) Balance at December 31, 2018 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 Carrying value at December 31, 2018 $ 71,818 $ — $ 24,578 $ — $ 46 $ 96,442 at December 31, 2019 $ 70,906 $ 57,344 $ 54,683 $ 7,396 $ 60 $ 190,389

Sandstorm deferred revenue (Tab

Sandstorm deferred revenue (Tables)	12 Months Ended
	Dec. 31, 2019
Accruals and deferred income [abstract]
Schedule of Components of Deferred Revenue	The following are components of deferred revenue as at December 31, 2019: Advances received $ 25,000 Deferred transaction costs (466 ) Accretion on significant financing component 473 Deferred revenue 25,007 Less: current portion (2,029 ) Non-current $ 22,978

Post-employment benefit oblig_2

Post-employment benefit obligations (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 Present value of funded obligations $ 29,519 $ 25,068 Fair value of plan assets 19,382 16,894 Deficit of funded plans $ 10,137 $ 8,174
Schedule of Movements in Defined Benefit Obligations	The movements in the defined benefit obligations are as follows: December 31, December 31, 2019 2018 Obligations, beginning of year $ 25,068 $ 26,730 Current service costs 579 755 Interest costs 1,048 965 Benefits paid (1,043 ) (960 ) Actuarial (gain) loss 3,867 (2,422 ) Obligations, end of year $ 29,519 $ 25,068
Schedule of Fair Value of Plan Assets	The movements in the fair value of plan assets are as follows: December 31, December 31, 2019 2018 Assets, beginning of year $ 16,894 $ 18,112 Return on assets 714 685 Actuarial gain (loss) 2,074 (1,871 ) Employer contributions 743 928 Benefits paid (1,043 ) (960 ) Assets, end of year $ 19,382 $ 16,894
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, 2019 2018 Current service costs and interest costs included in cost of sales $ 1,627 $ 1,720
Schedule of Principal Actuarial Assumptions	The principal actuarial assumptions are as follows: December 31, December 31, 2019 2018 Discount rate (expense) 4.25 % 3.75 % Discount rate (year end disclosures) 3.25 % 4.25 % Future salary increases (salaried plan only) 5.00 % 5.00 %

Decommissioning provision (Tabl

Decommissioning provision (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of other provisions [abstract]
Schedule of Changes in Decommissioning Provision	December 31, December 31, 2019 2018 Provisions, beginning of year $ 3,791 $ 3,948 Acquisition of Pershing Gold 1,223 — Decommissioning costs and change in estimates 2,541 (353 ) Accretion on decommissioning provision 210 196 Provisions, end of year $ 7,765 $ 3,791

Share capital (Tables)

Share capital (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of classes of share capital [abstract]
Schedule of Share Capital	December 31, December 31, 2019 2018 Issued 86,607,305 (2018: 43,402,434) common shares $ 284,512 $ 212,943 103,824 (2018: nil) preferred shares 161 — $ 284,673 $ 212,943
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, 2019 2018 Weighted Weighted average average exercise exercise Number price Number price (thousands) CAD (thousands) CAD Balance, beginning of year 3,160 $ 3.77 2,316 $ 3.06 Granted 5,915 2.86 1,435 4.54 Exercised (1,014 ) 2.33 (471 ) 2.29 Expired (40 ) 2.39 (120 ) 5.14 Balance, end of year 8,021 $ 3.29 3,160 $ 3.77
Schedule of Stock Options Outstanding and Exercisable	The following table summarizes information on stock options outstanding and exercisable as at December 31, 2019: 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 2.27 3,292 $ 2.39 1,012 $ 2.39 3.01 to 4.00 3.63 3,325 3.62 1,702 3.70 4.01 to 5.00 1.01 1,364 4.58 920 4.58 5.01 to 6.00 1.07 40 5.55 27 5.55 8,021 $ 3.29 3,661 $ 3.57
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, 2019 2018 Expected stock price volatility (1) 59 % 59 % Risk free interest rate 1.55 % 1.76 % Expected life 4 years 3 years Expected forfeiture rate 2.66 % 3.34 % Expected dividend yield 0 % 0 % Share-based payments included in cost of sales $ — $ — Share-based payments included in general and administrative expenses 3,314 2,042 Total share-based payments $ 3,314 $ 2,042 (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, 2019 are as follows: Number of warrants Exercise price (CAD) Issuance date Expiry 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 5,264,520

Weighted average basic and di_2

Weighted average basic and diluted number of common shares outstanding (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 Basic weighted average number of shares 71,421,798 42,639,530 Effect of dilutive shares, options and warrants — — Diluted weighted average number of shares 71,421,798 42,639,530

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 Silver Provisional sales revenue $ 21,246 $ 22,400 Derivative pricing adjustments 179 (299 ) 21,425 22,101 Zinc Provisional sales revenue $ 48,309 $ 44,148 Derivative pricing adjustments (1,939 ) (2,022 ) 46,370 42,126 Lead Provisional sales revenue $ 26,061 $ 30,871 Derivative pricing adjustments (550 ) (513 ) 25,511 30,358 Other by-products Provisional sales revenue $ 597 $ 542 Derivative pricing adjustments (238 ) (11 ) 359 531 Total provisional sales revenue $ 96,213 $ 97,961 Total derivative pricing adjustments (2,548 ) (2,845 ) Gross revenue $ 93,665 $ 95,116 Treatment and selling costs (35,255 ) (26,762 ) $ 58,410 $ 68,354

Cost of sales (Tables)

Cost of sales (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 Salaries and employee benefits $ 27,150 $ 24,942 Raw materials and consumables 22,144 18,951 Utilities 5,336 4,539 Other costs 2,456 2,453 Changes in inventories (362 ) 1,230 $ 56,724 $ 52,115

Corporate general and adminis_2

Corporate general and administrative expenses (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 Salaries and employee benefits $ 2,847 $ 2,160 Directors’ fees 379 326 Share-based payments 3,671 1,990 Professional fees 809 700 Office and general 2,005 1,544 $ 9,711 $ 6,720

Income taxes (Tables)

Income taxes (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 Current income tax expense $ 1,659 $ 408 Deferred income tax expense 299 260 Income tax expense $ 1,958 $ 668
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, 2019 2018 Tax recovery at statutory rates $ (8,555 ) $ (2,744 ) Mexican mining royalty 128 668 Impact of foreign tax rates (388 ) (107 ) Non-deductible 2,741 927 Losses not recognized 8,032 1,924 Income tax expense $ 1,958 $ 668
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: Year ended Year ended December 31, December 31, 2019 2018 Alternative minimum tax credits $ 343 $ 626 Provisions and reserves 2,101 — Net operating losses 4,230 742 Total deferred tax assets 6,674 1,368 Property, plant and equipment (6,331 ) (742 ) Net deferred tax assets $ 343 $ 626 The Company’s net deferred tax liability relates to the Mexican mining royalty and arises principally from the following: Year ended Year ended December 31, December 31, 2019 2018 Property, plant and equipment $ 851 $ 878 Other 329 607 Total deferred tax liabilities 1,180 1,485 Provisions and reserves (430 ) (353 ) Net deferred tax liabilities $ 750 $ 1,132
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, 2019 2018 Property, plant and equipment $ 19,288 $ 5,600 Mexican tax losses (expiring in 2023 - 2029) 25,599 29,476 Canadian tax losses (expiring in 2027 - 2039) 19,051 34,053 U.S. tax losses (expiring in 2020 - 2037) 31,956 31,159 U.S. tax losses (no expiry) 20,779 6,802 Provisions and other 29,207 26,479 Deferred Mexican mining royalty 750 1,838 $ 146,630 $ 135,407

Key management transactions (Ta

Key management transactions (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 Salaries and benefits $ 1,565 $ 1,142 Directors’ fees 379 326 Share-based payments 3,163 1,633

Financial risk management (Tabl

Financial risk management (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 Less than Over Total 1 year 2-3 years 4-5 years 5 years Trade and other payables $ 22,709 $ 22,709 $ — $ — $ — Glencore pre-payment 5,602 5,602 — — — Interest on Glencore pre-payment 199 199 — — — Convertible debenture 10,000 — — 10,000 — Interest on convertible debenture 1,955 602 1,200 153 — Projected pension contributions 6,937 1,185 2,619 2,078 1,055 Decommissioning provision 10,294 15 189 — 10,090 Other long-term liabilities 5,645 — 5,095 22 528 $ 63,341 $ 30,312 $ 9,103 $ 12,253 $ 11,673
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, 2019 Less than Over Total 1 year 2-3 years 4-5 years 5 years Trade and other payables $ 2,886 $ 2,886 $ — $ — $ — Other long-term liabilities 6,413 — 6,391 22 — $ 9,299 $ 2,886 $ 6,391 $ 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 6% to 10% applied during the year: Operating lease obligations as at December 31, 2018 $ 1,055 Practical expedients applied (538 ) Incremental borrowing rate discount (53 ) Additions 63 IFRS 16 adoption 527 Total lease liabilities as at January 1, 2019 270 Additions 6,478 Lease principal payments (234 ) Lease interest payments (50 ) Accretion on lease liabilities 34 Total lease liabilities as at December 31, 2019 $ 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, 2019 CAD MXP Cash and cash equivalents $ 444 $ 299 Trade and other receivables 43 663 Trade and other payables 2,204 8,065
Schedule of Sensitivity Analysis for Market Risks	As at December 31, 2019, the CAD/USD and MXP/USD exchange rates were 1.30 and 18.85 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, 2019 is included in the following table: CAD/USD MXP/USD Exchange rate Exchange rate +/- 10% +/- 10% Approximate impact on: Net loss $ 1,441 $ 1,932 Other comprehensive loss (41 ) 26
Schedule of Fair Value Measurements	December 31, December 31, 2019 2018 Level 1 Cash and cash equivalents $ 19,998 $ 3,464 Restricted cash 4,007 681 Level 2 Trade and other receivables 5,269 7,712 Derivative instruments 3,855 35 Convertible loan receivable — 1,977 Convertible loans payable — 4,032 Convertible debenture 9,935 — Glencore pre-payment 5,602 11,110 Derivative warrant liability — 711

Segmented and geographic info_2

Segmented and geographic information, and major customers (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of operating segments [abstract]
Schedule of Operating Segments	All revenues from sales of concentrates for the year ended December 31, 2019 and 2018 were earned in Mexico and the United States. The following segmented information is presented as at and during years ended December 31, 2019 and 2018. The Cosalá Operations segment operates in Mexico while the Galena Complex and Relief Canyon segments operate in the United States. As at December 31, 2019 As at December 31, 2018 Cosalá Galena Relief Corporate Total Cosalá Galena Corporate Total Cash and cash equivalents $ 2,903 $ 14,761 $ 770 $ 1,564 $ 19,998 $ 3,305 $ (2 ) $ 161 $ 3,464 Trade and other receivables 3,852 1,374 — 43 5,269 6,353 1,274 85 7,712 Inventories 6,361 2,137 — — 8,498 5,844 2,292 — 8,136 Prepaid expenses 615 524 471 304 1,914 506 535 206 1,247 Derivative instruments — — — 585 585 — — — — Asset held-for-sale — — — — — 6,925 — — 6,925 Convertible loan receivable — — — — — — — 1,922 1,922 Restricted cash 145 55 3,807 — 4,007 139 541 1 681 Property, plant and equipment 56,094 47,672 86,201 422 190,389 52,540 43,856 46 96,442 Deferred tax assets — 343 — — 343 — 626 — 626 Total assets $ 69,970 $ 66,866 $ 91,249 $ 2,918 $ 231,003 $ 75,612 $ 49,122 $ 2,421 $ 127,155 Trade and other payables $ 9,241 $ 3,805 $ 6,506 $ 3,157 $ 22,709 $ 8,094 $ 3,614 $ 2,637 $ 14,345 Derivative instruments — — — 4,440 4,440 — — 35 35 Convertible loans payable — — — — — — — 2,972 2,972 Other long-term liabilities — 566 4,495 584 5,645 — 632 57 689 Sandstorm deferred revenue — — — 25,007 25,007 — — — — Convertible debenture — — — 9,935 9,935 — — — — Glencore pre-payment 5,602 — — — 5,602 11,110 — — 11,110 Post-employment benefit obligations — 10,137 — — 10,137 — 8,174 — 8,174 Decommissioning provision 1,854 2,156 3,755 — 7,765 1,760 2,031 — 3,791 Derivative warrant liability — — — — — — — 711 711 Deferred tax liabilities 750 — — — 750 1,132 — — 1,132 Total liabilities $ 17,447 $ 16,664 $ 14,756 $ 43,123 $ 91,990 $ 22,096 $ 14,451 $ 6,412 $ 42,959 Year ended December 31, 2019 Year ended December 31, 2018 Cosalá Galena Relief Corporate Total Cosalá Galena Corporate Total Revenue $ 39,620 $ 18,790 $ — $ — $ 58,410 $ 41,506 $ 26,848 $ — $ 68,354 Cost of sales (27,642 ) (29,082 ) — — (56,724 ) (23,283 ) (28,832 ) — (52,115 ) Depletion and amortization (9,448 ) (3,599 ) (164 ) (127 ) (13,338 ) (7,200 ) (3,362 ) (10 ) (10,572 ) Care and maintenance costs (39 ) (399 ) — — (438 ) (39 ) (1,032 ) — (1,071 ) Corporate general and administrative — — — (9,711 ) (9,711 ) — — (6,720 ) (6,720 ) Transaction costs — — — (3,467 ) (3,467 ) — — (871 ) (871 ) Exploration costs (1,132 ) (705 ) (715 ) — (2,552 ) (2,501 ) (194 ) — (2,695 ) Accretion on decommissioning provision (148 ) (40 ) (22 ) — (210 ) (149 ) (47 ) — (196 ) Interest and financing income (expense) (625 ) 15 19 (1,199 ) (1,790 ) (972 ) — (437 ) (1,409 ) Foreign exchange gain (loss) (289 ) — — 238 (51 ) (295 ) — 64 (231 ) Gain on disposal of assets — — — — — 879 — — 879 Gain (loss) on derivative instruments — — — (2,457 ) (2,457 ) 224 165 476 865 Gain on derivative warrant liability — — — 46 46 — — 590 590 Write-down of assets — — — — — (3,729 ) (77 ) — (3,806 ) Contingency on value added taxes — — — — — (1,012 ) — — (1,012 ) Income (loss) before income taxes 297 (15,020 ) (882 ) (16,677 ) (32,282 ) 3,429 (6,531 ) (6,908 ) (10,010 ) Income tax expense (1,277 ) (681 ) — — (1,958 ) (668 ) — — (668 ) Net income (loss) for the year $ (980 ) $ (15,701 ) $ (882 ) $ (16,677 ) $ (34,240 ) $ 2,761 $ (6,531 ) $ (6,908 ) $ (10,678 )

Capital management (Tables)

Capital management (Tables)	12 Months Ended
	Dec. 31, 2019
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, 2019 2018 Equity attributable to shareholders of the Company $ 126,291 $ 84,196

Summary of significant accoun_3

Summary of significant accounting policies (Property, plant and equipment) (Details)	12 Months Ended
	Dec. 31, 2019
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

Acquisition of Pershing Gold _3

Acquisition of Pershing Gold Corporation (Narrative) (Details) - Pershing Gold Corporation [Member] - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Sep. 28, 2018
Disclosure of detailed information about business combination [line items]
Acquisition related expenses		$ 2.5
Comprehensive loss	$ 1.4
Net loss before income taxes			$ 3.2
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, 2019	Dec. 31, 2018
Trade and other receivables [abstract]
Trade receivables	$ 4,560	$ 6,126
Value added taxes receivable	636	1,465
Other receivables	73	121
Trade and other receivables	$ 5,269	$ 7,712

Inventories (Narrative) (Detail

Inventories (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement Line Items [Line Items]
Inventories recognized as an expense	$ 56.7	$ 52.1
Concentrate [Member]
Statement Line Items [Line Items]
Inventory write-downs	$ 1.2	0.6
Spare Parts and Supplies [Member]
Statement Line Items [Line Items]
Inventory write-downs		0.2
Ore Stockpiles [Member]
Statement Line Items [Line Items]
Inventory write-downs

Inventories (Schedule of Invent

Inventories (Schedule of Inventories) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Classes of current inventories [abstract]
Concentrates	$ 1,292	$ 941
Current Ore stockpiles	497	1,602
Spare parts and supplies	5,370	5,593
Inventories	7,159	8,136
Long-term ore stockpiles	1,339
Gross inventories	$ 8,498	$ 8,136

Property, plant and equipment_2

Property, plant and equipment (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	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	$ 900
Impairment of property, plant and equipment		3,806
Insurance claim for equipment damaged from mining operations		800
Right-of-use assets		900
Property plant and equipment	190,389	96,442
Property purchase option [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	9,300
Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Property plant and equipment	31,300
Hochschild [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Final option payment	$ 750
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
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

Property, plant and equipment_3

Property, plant and equipment (Schedule of Property, Plant and Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about property, plant and equipment [line items]
Balance	$ 96,442
Write-down of equipment		$ 3,806
Balance	190,389	96,442
Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	31,300
Cost [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	168,065	211,721
Acquisition of Pershing Gold	49,272
Asset additions	46,147	15,165
Property purchase option acquired		2,633
Change in decommissioning provision	2,603	(354)
Reclassification	9,263	(61,100)
Balance	275,350	168,065
Cost [Member] | Mining interests [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	113,428	104,362
Acquisition of Pershing Gold
Asset additions	7,600	9,420
Property purchase option acquired
Change in decommissioning provision	93	(354)
Reclassification
Balance	121,121	113,428
Cost [Member] | Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance		58,467
Acquisition of Pershing Gold	34,335
Asset additions	11,236
Property purchase option acquired		2,633
Change in decommissioning provision	2,510
Reclassification	9,263	(61,100)
Balance	57,344
Cost [Member] | Plant and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	54,542	48,808
Acquisition of Pershing Gold	14,927
Asset additions	19,936	5,734
Property purchase option acquired
Change in decommissioning provision
Reclassification	(343)
Balance	89,062	54,542
Cost [Member] | Right-of-use lease assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance
Acquisition of Pershing Gold
Asset additions	7,358
Property purchase option acquired
Change in decommissioning provision
Reclassification	343
Balance	7,701
Cost [Member] | Corporate Office equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	95	84
Acquisition of Pershing Gold	10
Asset additions	17	11
Property purchase option acquired
Change in decommissioning provision
Reclassification
Balance	122	95
Accumulated depreciation and depletion [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	71,623	111,420
Depreciation/depletion for the year	13,338	10,572
Write-down of equipment		133
Reclassification		(50,502)
Balance	84,961	71,623
Accumulated depreciation and depletion [Member] | Mining interests [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	41,610	34,848
Depreciation/depletion for the year	8,605	6,762
Write-down of equipment
Reclassification
Balance	50,215	41,610
Accumulated depreciation and depletion [Member] | Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance		50,502
Depreciation/depletion for the year
Write-down of equipment
Reclassification		(50,502)
Balance
Accumulated depreciation and depletion [Member] | Plant and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	29,964	26,031
Depreciation/depletion for the year	4,415	3,800
Write-down of equipment		133
Reclassification
Balance	34,379	29,964
Accumulated depreciation and depletion [Member] | Right-of-use lease assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance
Depreciation/depletion for the year	305
Write-down of equipment
Reclassification
Balance	305
Accumulated depreciation and depletion [Member] | Corporate Office equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	49	39
Depreciation/depletion for the year	13	10
Write-down of equipment
Reclassification
Balance	62	49
Carrying value [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	96,442
Balance	190,389	96,442
Carrying value [Member] | Mining interests [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	71,818
Balance	70,906	71,818
Carrying value [Member] | Non-producing properties [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance
Balance	57,344
Carrying value [Member] | Plant and equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	24,578
Balance	54,683	24,578
Carrying value [Member] | Right-of-use lease assets [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance
Balance	7,396
Carrying value [Member] | Corporate Office equipment [Member]
Disclosure of detailed information about property, plant and equipment [line items]
Balance	46
Balance	$ 60	$ 46

Convertible loans receivable _2

Convertible loans receivable and payable (Narrative) (Details) $ / shares in Units, $ in Thousands, $ in Thousands	1 Months Ended	12 Months Ended
	Oct. 31, 2018CAD ($)	Dec. 31, 2019USD ($)shares	Dec. 31, 2018USD ($)shares	Dec. 31, 2019$ / shares	Jun. 30, 2019USD ($)	Apr. 03, 2019$ / sharesshares
Disclosure of detailed information about borrowings [line items]
Date of acquisition		Apr. 3, 2019
Number of shares issued | shares		86,607,305	43,402,434
Convertible Loan Receivable			$ 1,922
Derivative asset		4,440	35
Gain on derivative warrant liability		46	590
Derivative warrant liability			711
Short-term secured convertible loan agreements with Pierre Lassonde and two other lenders [Member]
Disclosure of detailed information about borrowings [line items]
Borrowings	$ 5,500
Interest rate	15.00%
Maturity date	July 1, 2019
Conversion price | $ / shares				$ 3.1231
Warrants issued | shares		1,074,999
Exercisable price of warrants | $ / shares				$ 3.1231
Exercisable period of warrants		5 years
Interest expense		$ 300	200
Derivative asset		200
Loss on derivative option		200	100
Gain on derivative warrant liability		100	$ 600
Derivative warrant liability		$ 1,300			$ 700
Short-term secured convertible loan agreements with Pierre Lassonde and two other lenders [Member] | Extended Period [Member]
Disclosure of detailed information about borrowings [line items]
Interest rate	18.00%
Maturity date	October 1, 2019
Convertible loan to Pershing [Member]
Disclosure of detailed information about borrowings [line items]
Interest rate		16.00%
Maturity date		June 1, 2019
Number of shares issued | shares						2,763,518
Par value per Share | $ / shares						$ 2.09
Convertible Loan Receivable		$ 2,800
Fair value of conversion option

Sandstorm deferred revenue (Nar

Sandstorm deferred revenue (Narrative) (Details) - Sandstorm Gold Ltd [Member] $ in Millions	12 Months Ended
	Dec. 31, 2019USD ($)
DisclosureOfDetailedInformationAboutAccrualsAndDeferredIncomeLineItems [Line Items]
Percentage of additional ounces of gold compounded annually	10.00%
Interest expense	$ 0.5
Bottom of range [Member]
DisclosureOfDetailedInformationAboutAccrualsAndDeferredIncomeLineItems [Line Items]
Percentage of reduced variable deliveries	2.00%
Top of range [member]
DisclosureOfDetailedInformationAboutAccrualsAndDeferredIncomeLineItems [Line Items]
Percentage of reduced variable deliveries	4.00%

Sandstorm deferred revenue (Sch

Sandstorm deferred revenue (Schedule of Components of Deferred Revenue) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of transactions between related parties [line items]
Less: current portion	$ (2,029)
Non-current portion	22,978
Sandstorm Gold Ltd [Member]
Disclosure of transactions between related parties [line items]
Advances received	25,000
Deferred transaction costs	(466)
Accretion on significant financing component	473
Deferred revenue	25,007
Less: current portion	(2,029)
Non-current portion	$ 22,978

Convertible debenture (Narrativ

Convertible debenture (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Apr. 03, 2019	Dec. 31, 2019
Plant and equipment [Member]
Disclosure of detailed information about borrowings [line items]
Interest expense on borrowings		$ 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		$ 4.4
Sandstorm Gold Ltd [Member] | Unsecured Promissory Note [Member]
Disclosure of detailed information about borrowings [line items]
Principal amount under convertible debenture	$ 3

Glencore pre-payment facility (

Glencore pre-payment facility (Details) - Metagri S.A. de C.V. [Member] - USD ($) $ in Millions	Mar. 30, 2017	Dec. 31, 2019
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 2020		$ 5.6
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%

Post-employment benefit oblig_3

Post-employment benefit obligations (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
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	$ 4,900	$ 3,700
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	4.20%	3.80%
Expected contributions to pension benefit plans	$ 1,200
Actuarial gain (loss) on post-employment benefit obligations	$ 1,051	$ (551)
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	$ 29,500	25,100
Increase (decrease) in defined benefit obligation 1% increase	29,500	25,100
Top of range [member]
Disclosure of defined benefit plans [line items]
Increase (decrease) in defined benefit obligation	34,400	28,800
Increase (decrease) in defined benefit obligation 1% increase	$ 29,600	$ 25,200

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, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [abstract]
Present value of funded obligations	$ 29,519	$ 25,068
Fair value of plan assets	19,382	16,894
Deficit of funded plans	$ 10,137	$ 8,174

Post-employment benefit oblig_5

Post-employment benefit obligations (Schedule of Defined Benefit Obligations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of net defined benefit liability (asset) [line items]
Obligations, beginning of year	$ 25,068
Obligations, end of year	29,519	$ 25,068
Defined Benefit Obligation [Member]
Disclosure of net defined benefit liability (asset) [line items]
Obligations, beginning of year	25,068	26,730
Current service costs	579	755
Interest costs	1,048	965
Benefits paid	(1,043)	(960)
Actuarial (gain) loss	3,867	(2,422)
Obligations, end of year	$ 29,519	$ 25,068

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, 2019	Dec. 31, 2018
Disclosure of net defined benefit liability (asset) [line items]
Assets, beginning of year	$ 16,894
Assets, end of year	19,382	$ 16,894
Plan Assets [Member]
Disclosure of net defined benefit liability (asset) [line items]
Assets, beginning of year	16,894	18,112
Return on assets	714	685
Actuarial gain (loss)	2,074	(1,871)
Employer contributions	743	928
Benefits paid	(1,043)	(960)
Assets, end of year	$ 19,382	$ 16,894

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, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [abstract]
Current service costs and interest costs included in cost of sales	$ 1,627	$ 1,720

Post-employment benefit oblig_8

Post-employment benefit obligations (Schedule of Principal Actuarial Assumptions) (Details)	Dec. 31, 2019	Dec. 31, 2018
Disclosure of defined benefit plans [abstract]
Discount rate (expense)	4.25%	3.75%
Discount rate (year end disclosures)	3.25%	4.25%
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, 2019USD ($)
Disclosure of other provisions [line items]
Estimated undiscounted amount of decommissioning provision	$ 10.2
Bottom of range [member]
Disclosure of other provisions [line items]
Risk free rate used to discount decommissioning provision	1.60%
Term used to estimate decommissioning provision	1 year
Top of range [member]
Disclosure of other provisions [line items]
Risk free rate used to discount decommissioning provision	7.20%
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, 2019	Dec. 31, 2018
Disclosure of other provisions [line items]
Provisions, beginning of year	$ 3,791	$ 3,948
Acquisition of Pershing Gold	1,223
Decommissioning costs and change in estimates	2,541	(353)
Accretion on decommissioning provision	210	196
Provisions, end of year	$ 7,765	$ 3,791

Share capital (Share Issuances)

Share capital (Share Issuances) (Narrative) (Details) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands	Apr. 03, 2019CAD ($)$ / sharesshares	Jul. 26, 2019USD ($)shares	Jul. 26, 2019USD ($)$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Dec. 31, 2018USD ($)$ / sharesshares	Dec. 31, 2017USD ($)
Disclosure of classes of share capital [line items]
Share capital issue | $				$ 284,673	$ 212,943
Issuance of common shares | shares				86,607,305	43,402,434
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				$ 0.98	$ 1.47
Shares outstanding, amount | $				$ 139,013	$ 84,196	$ 88,058
Restricted Share [Member]
Disclosure of classes of share capital [line items]
Shares outstanding, share | shares				89,196	86,692
Shares outstanding, amount | $				$ 300	$ 100
Deferred Share Units [Member]
Disclosure of classes of share capital [line items]
Shares outstanding, share | shares				323,333	337,137
Percentage of quarterly director fee payments earned as awards of deferred share units				20.00%
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

Share capital (Schedule of Shar

Share capital (Schedule of Share Capital) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of classes of share capital [abstract]
Common shares issued, shares	86,607,305	43,402,434
Common shares issued, value	$ 284,673	$ 212,943
Preferred issued, shares	103,824
Preferred issued, value	$ 161

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, 2019shares$ / shares	Dec. 31, 2018shares$ / shares
Number
Balance, beginning of year | shares	3,160	2,316
Granted | shares	5,915	1,435
Exercised | shares	(1,014)	(471)
Expired | shares	(40)	(120)
Balance, end of year | shares	8,021	3,160
Weighted average exercise price
Balance, beginning of year | $ / shares	$ 3.77	$ 3.06
Granted | $ / shares	2.86	4.54
Exercised | $ / shares	2.33	2.29
Expired | $ / shares	2.39	5.14
Balance, end of year | $ / shares	$ 3.29	$ 3.77

Share capital (Schedule of Stoc

Share capital (Schedule of Stock Options Outstanding and Exercisable) (Details) shares in Thousands	12 Months Ended
	Dec. 31, 2019shares$ / shares$ / shares	Dec. 31, 2019shares$ / shares	Dec. 31, 2018shares$ / shares	Dec. 31, 2017shares
Disclosure of range of exercise prices of outstanding share options [line items]
Outstanding | shares	8,021	8,021	3,160	2,316
Weighted average exercise price	$ 2.33		$ 2.29
Exercisable | shares	3,661	3,661
Weighted average exercise price	$ 3.57	$ 3.57
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)	2 years 3 months 8 days	2 years 3 months 8 days
Outstanding | shares	3,292	3,292
Weighted average exercise price		$ 2.39
Exercisable | shares	1,012	1,012
Weighted average exercise price	$ 2.39	$ 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 7 months 17 days	3 years 7 months 17 days
Outstanding | shares	3,325	3,325
Weighted average exercise price		$ 3.62
Exercisable | shares	1,702	1,702
Weighted average exercise price	$ 3.70	$ 3.70
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)	1 year 4 days	1 year 4 days
Outstanding | shares	1,364	1,364
Weighted average exercise price		$ 4.58
Exercisable | shares	920	920
Weighted average exercise price	$ 4.58	$ 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)	1 year 26 days	1 year 26 days
Outstanding | shares	40	40
Weighted average exercise price		$ 5.55
Exercisable | shares	27	27
Weighted average exercise price	$ 5.55	$ 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, 2019USD ($)yr	Dec. 31, 2018USD ($)yr
Disclosure of classes of share capital [abstract]
Expected stock price volatility	[1]	59.00%	59.00%
Risk free interest rate		1.55%	1.76%
Expected life | yr		4	3
Expected forfeiture rate		2.66%	3.34%
Expected dividend yield		0.00%	0.00%
Share-based payments included in cost of sales
Share-based payments included in general and administrative expenses		3,314	2,042
Total share-based payments		$ 3,314	$ 2,042
[1]	Expected volatility has been based on historical volatility of the Company's publicly traded shares.

Share capital (Schedule of Warr

Share capital (Schedule of Warrants Issued and Outstanding) (Details)	12 Months Ended
	Dec. 31, 2019shares$ / shares
Disclosure of range of exercise prices of outstanding share options [line items]
Number of warrants	5,264,520
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

Weighted average basic and di_3

Weighted average basic and diluted number of common shares outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Basic weighted average number of shares	71,421,798	42,639,530
Effect of dilutive stock options and warrants
Diluted weighted average number of shares	71,421,798	42,639,530
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	8,020,790	3,159,993
Warrant [Member]
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items]
Diluted weighted average number of shares	5,264,520	4,858,845

Non-controlling interests (Deta

Non-controlling interests (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement Line Items [Line Items]
Recognized non-controlling interests	$ 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, 2019	Dec. 31, 2018
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	$ 96,213	$ 97,961
Derivative pricing adjustments	(2,548)	(2,845)
Gross revenue	93,665	95,116
Treatment and selling costs	(35,255)	(26,762)
Revenue	58,410	68,354
Silver [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	21,246	22,400
Derivative pricing adjustments	179	(299)
Gross revenue	21,425	22,101
Zinc [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	48,309	44,148
Derivative pricing adjustments	(1,939)	(2,022)
Gross revenue	46,370	42,126
Lead [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	26,061	30,871
Derivative pricing adjustments	(550)	(513)
Gross revenue	25,511	30,358
Other by-products [Member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Provisional sales revenue	597	542
Derivative pricing adjustments	(238)	(11)
Gross revenue	$ 359	$ 531

Cost of sales (Details)

Cost of sales (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Non-controlling Interests
Salaries and employee benefits	$ 27,150	$ 24,942
Raw materials and consumables	22,144	18,951
Utilities	5,336	4,539
Other costs	2,456	2,453
Changes in inventories	(362)	1,230
Cost of sales	$ 56,724	$ 52,115

Corporate general and adminis_3

Corporate general and administrative expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Corporate general and administrative expenses [abstract]
Salaries and employee benefits	$ 2,847	$ 2,160
Directors' fees	379	326
Share-based payments	3,671	1,990
Professional fees	809	700
Office and general	2,005	1,544
Corporate general and administrative expenses	$ 9,711	$ 6,720

Income taxes (Schedule of Compo

Income taxes (Schedule of Components of Income Tax Expense) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [abstract]
Current income tax expense	$ 1,659	$ 408
Deferred income tax expense (recovery)	299	260
Income tax expense	$ 1,958	$ 668

Income taxes (Schedule of Recon

Income taxes (Schedule of Reconciliation of Effective Tax Rate) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [abstract]
Statutory tax rate	26.50%	26.50%
Tax recovery at statutory rates	$ (8,555)	$ (2,744)
Mexican mining royalty	128	668
Impact of foreign tax rates	(388)	(107)
Non-deductible expenses	2,741	927
Losses not recognized	8,032	1,924
Income tax expense	$ 1,958	$ 668

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, 2019	Dec. 31, 2018
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax assets	$ 343	$ 626
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	626
Provisions and reserves	2,101
Net operating losses	4,230	742
Total deferred tax assets	6,674	1,368
Property, plant and equipment	(6,331)	(742)
Net deferred tax assets	$ 343	$ 626

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, 2019	Dec. 31, 2018
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Net deferred tax liabilities	$ 750	$ 1,132
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	851	878
Other	329	607
Total deferred tax liabilities	1,180	1,485
Provisions and reserves	(430)	(353)
Net deferred tax liabilities	$ 750	$ 1,132

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, 2019	Dec. 31, 2018
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	$ 146,630	$ 135,407
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	19,288	5,600
Mexican Tax Losses (expiring in 2023 - 2029) [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	25,599	29,476
Canadian Tax Losses (expiring in 2027 - 2039) [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	19,051	34,053
U.S. Tax Losses (expiring in 2020 - 2037) [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	31,159
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	20,779	6,802
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	29,207	26,479
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	$ 750	$ 1,838

Key management transactions (De

Key management transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of transactions between related parties [abstract]
Salaries and benefits	$ 1,565	$ 1,142
Directors' fees	379	326
Share-based payments	$ 3,163	$ 1,633

Financial risk management (Narr

Financial risk management (Narrative) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)lb$ / shares	Dec. 31, 2018USD ($)
Non-Hedge Foreign Exchange Forward Contracts [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Realized gain on foreign exchange contract	$ 400	$ 200
Non-Hedge Foreign Exchange Forward Contracts [Member] | Zinc [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Gain from sale of commodity	$ 2,500
Quantity of commodity sell | lb	2,000,000
Non-Hedge Foreign Exchange Forward Contracts [Member] | Lead [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Gain from sale of commodity	$ 900
Quantity of commodity sell | lb	900,000
Non-Hedge Commodity Foreign Forward Contracts [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Quantity of commodity sell | lb	10,700,000
Realized gain on commodity contracts	$ 2,000	900
Unrealized gains on forward exchange contracts	500
Realized gain on foreign exchange contract	1,000	500
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	$ 2,500	900
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
Realized gain on commodity contracts	$ 1,900
Average price per pound | $ / shares	$ 1.20
Average price for settlement | $ / shares	$ 1.03
Fair value of Commodity	$ 1,600
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
Realized gain on commodity contracts	$ 3,100
Average price per pound | $ / shares	$ 0.95
Average price for settlement | $ / shares	$ 0.87
Fair value of Commodity	$ 2,900
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	4,600	6,100
Credit risk [Member] | Mexican Value Added Taxes [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Risk exposure associated with instrument	600	1,500
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	$ 500	$ 600
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) $ in Thousands	Dec. 31, 2019USD ($)
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade and other payables	$ 22,709
Glencore pre-payment facility	5,602
Interest on Glencore pre-payment facility	199
Convertible debenture	10,000
Interest on convertible debenture	1,955
Projected pension contributions	6,937
Decommissioning provision	10,294
Other long-term liabilities	5,645
Total contractual maturities of financial liabilities on an undiscounted basis	63,341
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	22,709
Glencore pre-payment facility	5,602
Interest on Glencore pre-payment facility	199
Convertible debenture
Interest on convertible debenture	602
Projected pension contributions	1,185
Decommissioning provision	15
Other long-term liabilities
Total contractual maturities of financial liabilities on an undiscounted basis	30,312
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
Interest on Glencore pre-payment facility
Convertible debenture
Interest on convertible debenture	1,200
Projected pension contributions	2,619
Decommissioning provision	189
Other long-term liabilities	5,095
Total contractual maturities of financial liabilities on an undiscounted basis	9,103
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
Interest on Glencore pre-payment facility
Convertible debenture	10,000
Interest on convertible debenture	153
Projected pension contributions	2,078
Decommissioning provision
Other long-term liabilities	22
Total contractual maturities of financial liabilities on an undiscounted basis	12,253
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
Interest on Glencore pre-payment facility
Convertible debenture
Interest on convertible debenture
Projected pension contributions	1,055
Decommissioning provision	10,090
Other long-term liabilities	528
Total contractual maturities of financial liabilities on an undiscounted basis	$ 11,673

Financial risk management (Sc_2

Financial risk management (Schedule of Lease liabilities) (Details) $ in Thousands	Dec. 31, 2019USD ($)
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	$ 9,299
Less than 1 year [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	2,886
2-3 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	6,391
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	2,886
Trade and Other Payables [Member] | Less than 1 year [Member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Minimum lease payments	2,886
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	6,413
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	6,391
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, 2019	Dec. 31, 2018
Financial risk management [abstract]
Operating lease obligations	$ 270	$ 1,055
Practical expedients applied		(538)
Incremental borrowing rate discount		(53)
Additions	6,478	63
Lease principal payments	(234)
Lease interest payments	(50)
Accretion on lease liabilities	34
IFRS 16 adoption		527
Total lease liabilities	$ 7,025	$ 270

Financial risk management (Sc_4

Financial risk management (Schedule of Currency Risks) (Details) $ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)$ / $$ / $	Dec. 31, 2019CAD ($)	Dec. 31, 2019MXN ($)	Dec. 31, 2018USD ($)	Dec. 31, 2019CAD ($)$ / $$ / $	Dec. 31, 2019MXN ($)$ / $$ / $
Non-Hedge Foreign Exchange Forward Contracts [Member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Realized gain on foreign exchange contract	$ 400			$ 200
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						$ 260,000
Foreign exchange rates | $ / $	19.81				19.81	19.81
Approximate value of currency expected to be settled in first half of 2019	$ 1,300
Realized gains on forward exchange contracts	200			200
Risk from currency fluctuations recognized in net earnings or other comprehensive income			$ 24,000
Unrealized gains on forward exchange contracts	100			$ 100
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	$ 1,400
Foreign exchange rates | $ / $	19.11				19.11	19.11
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		$ 1,441
Approximate impact of exchange rate fluctuations on other comprehensive loss		$ (41)
Foreign exchange rates | $ / $	1.30				1.30	1.30
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			1,932
Approximate impact of exchange rate fluctuations on other comprehensive loss			$ 26
Foreign exchange rates | $ / $	18.85				18.85	18.85
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					$ 444
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						$ 299
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					43
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						663
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					$ 2,204
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						$ 8,065

Financial risk management (Sc_5

Financial risk management (Schedule of Fair Value Measurements) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	$ 19,998	$ 3,464	$ 9,325
Restricted cash	4,007	681
Trade and other receivables	5,269	7,712
Derivative instruments	4,440	35
Convertible loan receivable		1,922
Convertible loans payable		2,972
Convertible debenture	9,935
Derivative warrant liability		711
Level 1 [Member]
Disclosure of fair value measurement of assets [line items]
Cash and cash equivalents	19,998	3,464
Restricted cash	4,007	681
Level 2 [Member]
Disclosure of fair value measurement of assets [line items]
Trade and other receivables	5,269	7,712
Derivative instruments	3,585	35
Convertible loan receivable		1,977
Convertible loans payable		4,032
Convertible debenture	9,935
Glencore pre-payment facility	5,602	11,110
Derivative warrant liability		$ 711

Segmented and geographic info_3

Segmented and geographic information, and major customers (Statements of Financial Position) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disclosure of operating segments [line items]
Cash and cash equivalents	$ 19,998	$ 3,464	$ 9,325
Trade and other receivables	5,269	7,712
Inventories	7,159	8,136
Prepaid expenses	1,914	1,247
Derivative instruments	585
Assets held-for-sale		6,925
Convertible loan receivable		1,922
Restricted cash	4,007	681
Property, plant and equipment	190,389	96,442
Deferred tax assets	343	626
Total assets	231,003	127,155
Trade and other payables	22,709	14,345
Derivative instruments	4,440	35
Convertible loans payable		2,972
Other long-term liabilities	5,645	689
Sandstorm deferred revenue	22,978
Convertible debenture	9,935
Glencore pre-payment facility	5,602	5,610
Post-employment benefit obligations	10,137	8,174
Decommissioning provision	7,765	3,791
Derivative warrant liability		711
Deferred tax liabilities (assets)	750	1,132
Total liabilities	91,990	42,959
Cosala Operations [Member]
Disclosure of operating segments [line items]
Cash and cash equivalents	2,903	3,305
Trade and other receivables	3,852	6,353
Inventories	6,361	5,844
Prepaid expenses	615	506
Derivative instruments
Assets held-for-sale		6,925
Convertible loan receivable
Restricted cash	145	139
Property, plant and equipment	56,094	52,540
Deferred tax assets
Total assets	69,970	75,612
Trade and other payables	9,241	8,094
Derivative instruments
Convertible loans payable
Other long-term liabilities
Sandstorm deferred revenue
Convertible debenture
Glencore pre-payment facility	5,602	11,110
Post-employment benefit obligations
Decommissioning provision	1,854	1,760
Derivative warrant liability
Deferred tax liabilities (assets)	750	1,132
Total liabilities	17,447	22,096
Galena Complex [Member]
Disclosure of operating segments [line items]
Cash and cash equivalents	14,761	(2)
Trade and other receivables	1,374	1,274
Inventories	2,137	2,292
Prepaid expenses	524	535
Derivative instruments
Assets held-for-sale
Convertible loan receivable
Restricted cash	55	541
Property, plant and equipment	47,672	43,856
Deferred tax assets	343	626
Total assets	66,866	49,122
Trade and other payables	3,805	3,614
Derivative instruments
Convertible loans payable
Other long-term liabilities	566	632
Sandstorm deferred revenue
Convertible debenture
Glencore pre-payment facility
Post-employment benefit obligations	10,137	8,174
Decommissioning provision	2,156	2,031
Derivative warrant liability
Deferred tax liabilities (assets)
Total liabilities	16,664	14,451
Relief Canyon [Member]
Disclosure of operating segments [line items]
Cash and cash equivalents	770
Trade and other receivables
Inventories
Prepaid expenses	471
Derivative instruments
Assets held-for-sale
Convertible loan receivable
Restricted cash	3,807
Property, plant and equipment	86,201
Deferred tax assets
Total assets	91,249
Trade and other payables	6,506
Derivative instruments
Convertible loans payable
Other long-term liabilities	4,495
Sandstorm deferred revenue
Convertible debenture
Glencore pre-payment facility
Post-employment benefit obligations
Decommissioning provision	3,755
Derivative warrant liability
Deferred tax liabilities (assets)
Total liabilities	14,756
Corporate and Other [Member]
Disclosure of operating segments [line items]
Cash and cash equivalents	1,564	161
Trade and other receivables	43	85
Inventories
Prepaid expenses	304	206
Derivative instruments	585
Assets held-for-sale
Convertible loan receivable		1,922
Restricted cash		1
Property, plant and equipment	422	46
Deferred tax assets
Total assets	2,918	2,421
Trade and other payables	3,157	2,637
Derivative instruments	4,440	35
Convertible loans payable		2,972
Other long-term liabilities	584	57
Sandstorm deferred revenue	25,007
Convertible debenture	9,935
Glencore pre-payment facility
Post-employment benefit obligations
Decommissioning provision
Derivative warrant liability		711
Deferred tax liabilities (assets)
Total liabilities	$ 43,123	$ 6,412

Segmented and geographic info_4

Segmented and geographic information, and major customers (Statements of Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating segments [line items]
Revenue	$ 58,410	$ 68,354
Cost of sales	(56,724)	(52,115)
Depletion and amortization	(13,338)	(10,572)
Care, maintenance and restructuring costs	(438)	(1,071)
Corporate general and administrative	(9,711)	(6,720)
Transaction costs	(3,467)	(871)
Exploration costs	(2,552)	(2,695)
Accretion on decommissioning provision	(210)	(196)
Interest and financing expense	(1,790)	(1,409)
Foreign exchange gain (loss)	(51)	(231)
Gain on disposal of assets		879
Gain on derivative instruments	(2,457)	865
Gain on derivative warrant liability	46	590
Write-down of assets		(3,806)
Contingency on value added taxes		(1,012)
Income (loss) before income taxes	(32,282)	(10,010)
Income tax recovery (expense)	(1,958)	(668)
Net Income (loss) for the year	(34,240)	(10,678)
Cosala Operations [Member]
Disclosure of operating segments [line items]
Revenue	39,620	41,506
Cost of sales	(27,642)	(23,283)
Depletion and amortization	(9,448)	(7,200)
Care, maintenance and restructuring costs	(39)	(39)
Corporate general and administrative
Transaction costs
Exploration costs	(1,132)	(2,501)
Accretion on decommissioning provision	(148)	(149)
Interest and financing expense	(625)	(972)
Foreign exchange gain (loss)	(289)	(295)
Gain on disposal of assets		879
Gain on derivative instruments		224
Gain on derivative warrant liability
Write-down of assets		(3,729)
Contingency on value added taxes		(1,012)
Income (loss) before income taxes	297	3,429
Income tax recovery (expense)	(1,277)	(668)
Net Income (loss) for the year	(980)	2,761
Galena Complex [Member]
Disclosure of operating segments [line items]
Revenue	18,790	26,848
Cost of sales	(29,082)	(28,832)
Depletion and amortization	(3,599)	(3,362)
Care, maintenance and restructuring costs	(399)	(1,032)
Corporate general and administrative
Transaction costs
Exploration costs	(705)	(194)
Accretion on decommissioning provision	(40)	(47)
Interest and financing expense	15
Foreign exchange gain (loss)
Gain on disposal of assets
Gain on derivative instruments		165
Gain on derivative warrant liability
Write-down of assets		(77)
Contingency on value added taxes
Income (loss) before income taxes	(15,020)	(6,531)
Income tax recovery (expense)	(681)
Net Income (loss) for the year	(15,701)	(6,531)
Relief Canyon [Member]
Disclosure of operating segments [line items]
Revenue
Cost of sales
Depletion and amortization	(164)
Care, maintenance and restructuring costs
Corporate general and administrative
Transaction costs
Exploration costs	(715)
Accretion on decommissioning provision	(22)
Interest and financing expense	19
Foreign exchange gain (loss)
Gain on disposal of assets
Gain on derivative instruments
Gain on derivative warrant liability
Write-down of assets
Contingency on value added taxes
Income (loss) before income taxes	(882)
Income tax recovery (expense)
Net Income (loss) for the year	(882)
Corporate and Other [Member]
Disclosure of operating segments [line items]
Revenue
Cost of sales
Depletion and amortization	(127)	(10)
Care, maintenance and restructuring costs
Corporate general and administrative	(9,711)	(6,720)
Transaction costs	(3,467)	(871)
Exploration costs
Accretion on decommissioning provision
Interest and financing expense	(1,199)	(437)
Foreign exchange gain (loss)	238	64
Gain on disposal of assets
Gain on derivative instruments	(2,457)	476
Gain on derivative warrant liability	46	590
Write-down of assets
Contingency on value added taxes
Income (loss) before income taxes	(16,677)	(6,908)
Income tax recovery (expense)
Net Income (loss) for the year	$ (16,677)	$ (6,908)

Segmented and geographic info_5

Segmented and geographic information, and major customers (Major Customers) (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Major Customer One [Member]
Disclosure of major customers [line items]
Percentage of revenue	100.00%	78.00%
Major Customer Two [Member]
Disclosure of major customers [line items]
Percentage of revenue		22.00%

Capital management (Details)

Capital management (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of objectives, policies and processes for managing capital [abstract]
Equity attributable to shareholders of the Company	$ 126,291	$ 84,196

Contingencies (Details)

Contingencies (Details) - Tax contingent liability [Member] $ in Millions, $ in Millions	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			$ 10.4
Amount of tax deduction disallowed by Mexican tax authorities that would be applied against available tax losses	$ 1.1		4.5
Amount of tax deduction disallowed by Mexican tax authorities, subsequently reversed			5
Portion of disputed tax deduction remaining relating to transactions with certain suppliers			5.4
Portion of disputed tax deduction remaining relating to value added taxes			$ 0.9
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) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Feb. 18, 2020	Jan. 16, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of non-adjusting events after reporting period [line items]
Proceeds from issuing shares			$ 9,609
Macquarie Bank Ltd [Member]
Disclosure of non-adjusting events after reporting period [line items]
Amount of precious metals delivery and purchase agreement		$ 5,000
Amount settled through fixed deliveries of gold production from Relief Canyon Mine		$ 5,000
ATM Agreement [Member]
Disclosure of non-adjusting events after reporting period [line items]
Proceeds from issuing shares	$ 15,000