Sandstorm Gold (SAND) 6-K 11 Feb 21 2020 FY Current report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Dec. 31, 2020
Cover [Abstract]
Entity Registrant Name	SANDSTORM GOLD LTD
Entity Central Index Key	0001434614
Document Type	6-K
Document Period End Date	Dec. 31, 2020
Amendment Flag	false
Document Fiscal Year Focus	2020
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	FY

Consolidated Statements of Fina

Consolidated Statements of Financial Position - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current
Cash and cash equivalents	$ 113,776	$ 6,971
Trade and other receivables	8,011	7,611
Short-term investments	1,852	10,801
Other current assets	737	2,761
Total current assets	124,376	28,144
Non-current
Stream, royalty and other interests	356,612	395,533
Hod Maden and other investments in associates	112,906	116,585
Investments	45,084	72,840
Other long-term assets	10,943	5,770
Deferred income tax assets	0	4,303
Total assets	649,921	623,175
Current
Trade and other payables	3,434	3,865
Non-current
Deferred income tax liabilities	5,477	196
Lease liabilities and other	2,868	3,218
Bank debt	0	45,000
Total liabilities	11,779	52,279
— EQUITY
Share capital	719,730	657,551
Reserves	18,902	20,466
Retained earnings (deficit)	10,951	(2,866)
Accumulated other comprehensive loss	(111,441)	(104,255)
Total equity	638,142	570,896
Total liabilities and equity	$ 649,921	$ 623,175

Consolidated Statements of Inco

Consolidated Statements of Income (Loss) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Statement [Line Items]
Total revenue		$ 93,025	$ 89,434
Cost of sales, excluding depletion		14,046	18,286
Depletion		33,124	37,845
Total cost of sales		47,170	56,131
Gross profit		45,855	33,303
Expenses and other (income)
Administration expenses	[1]	8,335	8,274
Project evaluation	[1]	5,533	5,910
Gain on revaluation of investments		(3,830)	(9,456)
Stream, royalty and other interests impairments		8,877	2,660
Finance expense		2,107	3,503
Finance income		(315)	(756)
Foreign exchange loss		345	86
Other		527	74
Income before taxes		24,276	23,008
Current income tax expense		2,864	2,240
Deferred income tax expense		7,595	4,371
Income tax expense		10,459	6,611
Net income for the year		$ 13,817	$ 16,397
Earnings per share
Basic earnings per share		$ 0.07	$ 0.09
Diluted earnings per share		$ 0.07	$ 0.09
Weighted average number of common shares outstanding
Basic		187,507,754	177,619,824
Diluted		196,907,840	190,220,013
Sales [member]
Statement [Line Items]
Total revenue		$ 58,660	$ 63,602
Royalty revenue [member]
Statement [Line Items]
Total revenue		$ 34,365	$ 25,832
[1]	Equity settled stock-based compensation a (non-cash item) is included in administration expenses and project evaluation $5,652 $5,180

Consolidated Statements of In_2

Consolidated Statements of Income (Loss) (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Profit or loss [abstract]
Equity settled stock based compensation (a non-cash item) is included in administration expenses and project evaluation	$ 5,652	$ 5,180

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement of comprehensive income [abstract]
Net income for the year	$ 13,817	$ 16,397
Items that may subsequently be reclassified to net income:
Currency translation differences	(23,052)	(13,140)
Items that will not subsequently be reclassified to net income:
Gain on FVTOCI investments	18,212	11,709
Tax expense on FVTOCI investments	(2,346)	(50)
Other comprehensive loss for the year	(7,186)	(1,481)
Total comprehensive income for the year	$ 6,631	$ 14,916

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
— OPERATING ACTIVITIES
Net income for the year	$ 13,817	$ 16,397
Items not affecting cash:
Depletion and depreciation	33,611	38,291
Stream, royalty and other interests impairments	8,877	2,660
Deferred income tax expense	7,595	4,371
Share based payments	5,652	5,180
Gain on revaluation of investments	(3,830)	(9,456)
Interest expense and financing amortization	1,935	3,327
Unrealized foreign exchange loss	346	68
Loss (gain) on stream and royalty interests disposal and other	335	(134)
Changes in non-cash working capital	(2,722)	(3,365)
Cash flow from (used in) operating activities	65,616	57,339
— INVESTING ACTIVITIES
Proceeds from disposal of investments and other	56,381	23,327
Acquisition of investments and other assets	(15,916)	(24,070)
Acquisition of stream, royalty and other interests	(3,476)	(61,288)
Investment in Hod Maden interest	(3,312)	(3,000)
Cash flow from (used in) investing activities	33,677	(65,031)
— FINANCING ACTIVITIES
Proceeds on exercise of warrants, options and other	77,579	13,064
Bank debt drawn	41,000	92,500
Bank debt repaid	(86,000)	(47,500)
Redemption of common shares (normal course issuer bid)	(23,524)	(46,613)
Interest paid	(1,361)	(2,702)
Cash flow from (used in) financing activities	7,694	8,749
Effect of exchange rate changes on cash and cash equivalents	(182)	22
Net increase in cash and cash equivalents	106,805	1,079
Cash and cash equivalents — beginning of the year	6,971	5,892
Cash and cash equivalents — end of the year	$ 113,776	$ 6,971

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity $ in Thousands	USD ($)shares	Share Capital [member]USD ($)shares	Reserves Share Options and Restricted Share Rights [member]USD ($)	Reserve Share Purchase Warrants [member]USD ($)	Retained Earnings (Deficit) [member]USD ($)	Accumulated Other Comprehensive Income (Loss) [member]USD ($)
Equity at beginning of period at Dec. 31, 2018	$ 583,397	$ 684,722	$ 15,748	$ 4,964	$ (19,263)	$ (102,774)
Equity, shares, beginning at Dec. 31, 2018 | shares		180,881,580
Options exercised	7,150	$ 10,766	(3,616)
Options exercised, shares | shares		3,181,108
Warrants exercised and expired	6,774	$ 7,068		(294)
Warrants exercised and expired, shares | shares		1,506,051
Vesting of restricted share rights		$ 1,516	(1,516)
Vesting of restricted share rights, shares | shares		339,404
Acquisition and cancellation of common shares (normal course issuer bid)	(46,521)	$ (46,521)
Acquisition and cancellation of common shares (normal course issuer bid), shares | shares		(8,680,202)
Share based payments	5,180		5,180
Total comprehensive income (loss)	14,916				16,397	(1,481)
Equity at end of period at Dec. 31, 2019	570,896	$ 657,551	15,796	4,670	(2,866)	(104,255)
Equity, shares, ending at Dec. 31, 2019 | shares		177,227,941
Options exercised	4,087	$ 5,421	(1,334)
Options exercised, shares | shares		1,253,430
Warrants exercised and expired	75,366	$ 82,105		(6,739)
Warrants exercised and expired, shares | shares		21,091,325
Vesting of restricted share rights		$ 1,212	(1,212)
Vesting of restricted share rights, shares | shares		279,567
Acquisition and cancellation of common shares (normal course issuer bid)	$ (23,524)	$ (23,524)
Acquisition and cancellation of common shares (normal course issuer bid), shares | shares	(4,600,000)	(4,599,020)
Share based payments	$ 5,652		5,652
Share issuance costs	(966)	$ (3,035)		$ 2,069
Total comprehensive income (loss)	6,631				13,817	(7,186)
Equity at end of period at Dec. 31, 2020	$ 638,142	$ 719,730	$ 18,902		$ 10,951	$ (111,441)
Equity, shares, ending at Dec. 31, 2020 | shares		195,253,243

Nature of Operations

Nature of Operations	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Nature of Operations	1 – Nature of Operations Sandstorm Gold Ltd. was incorporated under the Business Corporations Act of British Columbia on March 23, 2007. Sandstorm Gold Ltd. and its subsidiary entities (collectively “Sandstorm”, “Sandstorm Gold” or the “Company”) is a resource-based company that seeks to acquire gold and other metals purchase agreements (“Gold Streams” or “Streams”) and royalties from companies that have advanced stage development projects or operating mines. In return for making an upfront payment to acquire a Stream or royalty, Sandstorm receives the right to purchase, at a fixed price per unit or at a fixed percentage of the spot price, a percentage of a mine’s production for the life of the mine (in the case of a Stream) or a portion of the revenue generated from the mine (in the case of a royalty). The head office, principal address and registered office of the Company are located at Suite 1400, 400 Burrard Street, Vancouver, British Columbia, V6C 3A6. These consolidated financial statements were authorized for issue by the Board of Directors of the Company on February 11 , 2021.

Summary of Significant Accounti

Summary of Significant Accounting Policies	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Summary of Significant Accounting Policies	2 – Summary of Significant Accounting Policies A. Statement of Compliance These consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”). B. Basis of Presentation These consolidated financial statements have been prepared on a historical cost basis except for certain financial instruments, which are measured at fair value. The consolidated financial statements are presented in United States dollars, and all values are rounded to the nearest thousand except as otherwise indicated. C. Principles of Consolidation These consolidated financial statements include the accounts of the Company and its subsidiaries (all wholly owned), Sandstorm Gold (Canada) Ltd., Bridgeport Gold Inc., Inversiones Mineras Australes Holdings (BVI) Inc., Inversiones Mineras Australes S.A., Premier Royalty U.S.A. Inc., SA Targeted Investing Corp., Sandstorm Metals & Energy (Canada) Holdings Ltd., Sandstorm Metals & Energy (Canada) Ltd., Sandstorm Metals & Energy (US) Inc., Mariana Resources Limited and Mariana Turkey Limited. Subsidiaries are fully consolidated from the date the Company obtains control and continue to be consolidated until the date that control ceases. Control is achieved when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. All intercompany balances, transactions, revenues and expenses have been eliminated on consolidation. D. Business Combinations On the acquisition of a business, the acquisition method of accounting is used, whereby the purchase consideration is allocated to the identifiable assets and liabilities on the basis of fair value at the date of acquisition. Provisional fair values allocated at a reporting date are finalized as soon as the relevant information is available, within a period not to exceed twelve months from the acquisition date with retrospective restatement of the impact of adjustments to those provisional fair values effective as at the acquisition date. Incremental costs related to acquisitions are expensed as incurred. When the amount of purchase consideration is contingent on future events, the initial cost of the acquisition recorded includes an estimate of the fair value of the contingent amounts expected to be payable in the future. When the fair value of contingent consideration as at the date of acquisition is finalized before the purchase price allocation is finalized, the adjustment is allocated to the identifiable assets and liabilities acquired. Subsequent changes to the estimated fair value of contingent consideration are recorded in the Consolidated Statements of Income (Loss). When the cost of the acquisition exceeds the fair values of the identifiable net assets acquired, the difference is recorded as goodwill. If the fair value attributable to the Company’s share of the identifiable net assets exceeds the cost of acquisition, the difference is recognized as a gain in the Consolidated Statements of Income (Loss). Non-controlling E. Investment in Associate An associate is an entity over which the Company has significant influence and is neither a subsidiary nor a joint arrangement. The Company has significant influence when it has the power to participate in the financial and operating policy decisions of the associate but does not have control or joint control over those policies. The Company accounts for its investments in associates using the equity method. Under the equity method, the Company’s investment in associates are initially recognized at cost when acquired and subsequently increased or decreased to recognize the Company’s share of net income and losses of the associate, after any adjustments necessary to give effect to uniform accounting policies, any other movement in the associate’s reserves, and for impairment losses after the initial recognition date. The Company’s share of income and losses of the associate is recognized in net income during the period. Dividends received from the associate are accounted for as a reduction in the carrying amount of the Company’s investment. F. Goodwill The Company allocates goodwill arising from business combinations to each cash-generating unit or group of cash-generating units that are expected to receive the benefits from the business combination. Irrespective of any indication of impairment, the recoverable amount of the cash-generating unit or group of cash-generating units to which goodwill has been allocated is tested annually for impairment and when there is an indication that the goodwill may be impaired. Any impairment is recognized as an expense immediately. Any impairment of goodwill is not subsequently reversed. G. Stream, Royalty and Other Interests Stream, royalty and other interests consist of acquired royalty and stream metal purchase agreements. These interests are recorded at cost and capitalized as tangible assets with finite lives. They are subsequently measured at cost less accumulated depletion and accumulated impairment losses, if any. Project evaluation costs that are not related to a specific agreement are expensed in the period incurred. Stream, royalty and other interests related to producing mines are depleted using the units-of-production On acquisition of a stream, royalty or other interest, an allocation of its cost is attributed to the exploration potential of the interest and is recorded as a non-depletable asset on the acquisition date. The value of the exploration potential is accounted for in accordance with IFRS 6, Exploration and Evaluation of Mineral Resources and is not depleted until such time as the technical feasibility and commercial viability have been established at which point the value of the asset is accounted for in accordance with IAS 16, Property, Plant and Equipment. H. Impairment of Stream, Royalty and Other Interests Evaluation of the carrying values of each stream and royalty interest is undertaken when events or changes in circumstances indicate that the carrying values may not be recoverable and at each reporting period. If any indication of impairment exists, the recoverable amount is estimated to determine the extent of any impairment loss. The recoverable amount is the higher of the fair value less costs of disposal and value in use. Fair value is the price that would be received from selling an asset in an orderly transaction between market participants at the measurement date. Costs of disposal are incremental costs directly attributable to the disposal of an asset. Fair value less costs of disposal is usually estimated using a discounted cash flow approach. Estimated future cash flows are calculated using estimated production, sales prices, and a discount rate. Estimated production is determined using current reserves and the portion of resources expected to be classified as mineral reserves as well as exploration potential expected to be converted into resources. Estimated sales prices are determined by reference to an average of long-term metal price forecasts by analysts and management’s expectations. The discount rate is estimated using an average discount rate incorporating analyst views to value precious metal royalty companies. Value in use is determined as the future value of present cash flows expected to be derived from continuing use of an asset in its present form for those assets where value in use exceeds fair value less costs of disposal. If it is determined that the recoverable amount is less than the carrying value, then an impairment is recognized within net income (loss) immediately. An assessment is made at each reporting period if there is any indication that a previous impairment loss may no longer exist or has decreased. If indications are present, the carrying amount of the stream and royalty interest is increased to the revised estimate of its recoverable amount, but so that the increased carrying amount does not exceed the carrying amount net of depletion that would have been determined had no impairment loss been recognized for the stream and royalty interest in previous periods. I. Exploration Assets All costs incurred prior to obtaining the legal right to undertake exploration and evaluation activities on a project are expensed in the period incurred. Exploration and evaluation costs arising following the acquisition of an exploration license are capitalized on a project-by-project Upon demonstration of the technical and commercial feasibility of a project and a development decision, any past exploration and evaluation costs related to that project are subject to an impairment test and are reclassified in accordance with IAS 16, Property Plant and Equipment. Management assesses exploration assets for impairment at each reporting period or when facts and circumstances suggest that the carrying value of capitalized exploration costs may not be recoverable. J. Revenue Recognition Revenue is comprised of revenue earned in the period from contracts with customers under each of its royalty and stream interests. The Company has determined that each unit of a commodity that is delivered to a customer under a royalty and stream interest is a performance obligation for the delivery of a good that is separate from each other unit of the commodity to be delivered under the same arrangement. In accordance with IFRS 15, the Company recognizes revenue to depict the transfer of the relevant commodity to customers in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those commodities. For Stream interests, revenue recognition occurs when the relevant commodity received from the stream operator is transferred by the Company to its third-party customers. For royalty interests, revenue recognition occurs when the relevant commodity is transferred to the end customer by the operator of the royalty property. Revenue is measured at the fair value of the consideration received or receivable when management can reliably estimate the amount, pursuant to the terms of the royalty agreement. In some instances, the Company will not have access to sufficient information to make a reasonable estimate of consideration to which it expects to be entitled and, accordingly, revenue recognition is deferred until management can make a reasonable estimate. Differences between estimates and actual amounts are adjusted and recorded in the period that the actual amounts are known. K. Foreign Currency Translation The functional currency of the Company and its subsidiaries is the principal currency of the economic environment in which they operate. For the Company and its subsidiaries Sandstorm Gold (Canada) Ltd., Bridgeport Gold Inc., Inversiones Mineras Australes S.A., Inversiones Mineras Australes Holdings (BVI) Inc., Premier Royalty U.S.A. Inc., SA Targeted Investing Corp., Sandstorm Metals & Energy (Canada) Holdings Ltd., Sandstorm Metals & Energy (Canada) Ltd., Sandstorm Metals & Energy (US) Inc., Mariana Resources Limited, Mariana Turkey Limited and the Company’s Entrée Resources Ltd. associate, the functional currency is the U.S. dollar. The functional currency of the Company’s Hod Maden interest associate is the Turkish Lira. To translate the Hod Maden interest to the presentation currency of the U.S. dollar, all assets and liabilities are translated using the exchange rate as of the reporting date and all income and expenses are translated using the average exchange rates during the period. All resulting exchange differences are recognized in other comprehensive income (loss). Transactions in foreign currencies are initially recorded in the entity’s functional currency as the rate on the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated using the closing rate as at the reporting date. L. Financial Instruments The Company’s financial instruments consist of cash and cash equivalents, trade receivables and other, short and long-term investments Cash and cash equivalents, trade receivables and other, and loans receivable which are included in other assets are classified as financial assets at amortized cost and trade and other payables and bank debt are classified as financial liabilities at amortized cost. Both financial assets at amortized cost and financial liabilities at amortized cost are measured at amortized cost using the effective interest method. The company’s financial assets which are subject to credit risk include cash and cash equivalents, trade receivables and other and loans receivable which are included in other assets. Application of the expected credit loss model at the date of adoption did not have a significant impact on the Company’s financial assets because the Company determined that the expected credit losses on its financial assets were nominal. There were no material impairment losses recognized on financial assets during the years ended December 31, 2020 and December 31, 2019 . Investments in common shares are held for long-term strategic purposes and not for trading. The Company has made an irrevocable election to designate all these investments as fair value through other comprehensive income (“FVTOCI”) in order to provide a more meaningful presentation based on management’s intention, rather than reflecting changes in fair value in net income. Such investments are measured at fair value at the end of each reporting period, with any gains or losses arising on re-measurement Investments in warrants and convertible debt instruments are classified as fair value through profit or loss (“FVTPL”). These warrants re-measurement Transaction costs on initial recognition of financial instruments classified as FVTPL are expensed as incurred. Transaction costs incurred on initial recognition of financial instruments classified as loans and receivables, FVTOCI and other financial liabilities are recognized at their fair value amount and offset against the related loans and receivables or capitalized when appropriate. Financial assets are derecognized when the contractual rights to the cash flows from the asset expire. Financial liabilities are derecognized only when the Company’s obligations are discharged, cancelled or they expire. On derecognition , the difference between the carrying amount (measured at the date of derecognition ) and the consideration received (including any new asset obtained less any new liability obtained) is recognized in profit or loss. M. Inventory When refined gold or the applicable commodity, under the Stream agreement, is delivered to the Company, it is recorded as inventory. The amount recognized for inventory includes both the cash payment and the related depletion associated with the related Stream interest. N. Cash and Cash Equivalents Cash and cash equivalents include cash on account, demand deposits and money market investments with maturities from the date of acquisition of three months or less, which are readily convertible to known amounts of cash and are subject to insignificant changes in value. O. Income Taxes Current income tax assets and liabilities are measured at the amount expected to be recovered from or paid to the taxation authorities. The tax rates and tax laws used are those that are substantively enacted at the reporting date. Deferred income taxes are provided for using the liability method on temporary differences at the reporting date between the tax bases of assets and liabilities and their carrying amounts for accounting. The change in the net deferred income tax asset or liability is included in income except for deferred income tax relating to equity items which is recognized directly in equity, and relating to investments in common shares designated as FVTOCI which is recognized in other comprehensive income. The income tax effects of differences in the periods when revenue and expenses are recognized in accordance with Company accounting practices, and the periods they are recognized for income tax purposes are reflected as deferred income tax assets or liabilities. Deferred income tax assets and liabilities are measured using the substantively enacted statutory income tax rates which are expected to apply to taxable income in the years in which the assets are realized or the liabilities settled. A deferred tax asset is recognized for unused tax losses, tax credits and deductible temporary differences to the extent that it is probable that future taxable profits will be available for utilization. Deferred income tax assets and liabilities are offset only if a legally enforceable right exists to offset current tax assets against liabilities and the deferred tax assets and liabilities relate to income taxes levied by the same taxation authority on the same taxable entity and are intended to be settled on a net basis. The determination of current and deferred taxes requires interpretations of tax legislation, estimates of expected timing of reversal of deferred tax assets and liabilities, and estimates of future earnings. P. Share Capital and Share Purchase Warrants The proceeds from the issue of units are allocated between common shares and share purchase warrants (with an exercise price denominated in U.S. dollars) on a pro-rata Q. Earnings Per Share Basic earnings per share is computed by dividing the net income available to common shareholders by the weighted average number of common shares issued and outstanding during the period. Diluted earnings per share is calculated assuming that outstanding share options and share purchase warrants, with an average market price that exceeds the average exercise prices of the options and warrants for the year, are exercised and the proceeds are used to repurchase shares of the Company at the average market price of the common shares for the year. R. Share Based Payments The Company recognizes share based compensation expense for all share purchase options and restricted share rights (“RSRs”) awarded to employees, officers and directors based on the fair values of the share purchase options and RSRs at the date of grant. The fair values of share purchase options and RSRs at the date of grant are expensed over the vesting periods of the share purchase options and RSRs, respectively, with a corresponding increase to equity. The fair value of share purchase options is determined using the BSM with market related inputs as of the date of grant. Share purchase options with graded vesting schedules are accounted for as separate grants with different vesting periods and fair values. The fair value of RSRs is the market value of the underlying shares at the date of grant. At the end of each reporting period, the Company re-assesses The BSM requires management to estimate the expected volatility and expected term of the equity instrument, the risk-free rate of return over the term, expected dividends, and the number of equity instruments expected to ultimately vest. The Company uses its competitors market data with respect to expected volatility and expected dividend yield to the extent these factors are indicative of the Company’s future expectations. The expected term is estimated using historical exercise data, and the number of equity instruments expected to vest is estimated using historical forfeiture data. S. Related Party Transactions Parties are considered 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 related if they are subject to common control or significant influence. A transaction is considered a related party transaction when there is a transfer of resources or obligations between related parties. T. 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. The Company’s operating segments are components of the Company’s business for which discrete financial information is available and which are reviewed regularly by the Company’s Chief Executive Officer to make decisions about resources to be allocated to the segment and assess its performance. U. Leases Upon lease commencement, the Company recognizes a right-of-use right-of-use re-measured

Key Sources of Estimation Uncer

Key Sources of Estimation Uncertainty and Critical Accounting Judgments	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Key Sources of Estimation Uncertainty and Critical Accounting Judgments	3 – Key Sources of Estimation Uncertainty and Critical Accounting Judgments The preparation of the Company’s consolidated financial statements in conformity with IFRS requires management to make judgments, estimates and assumptions that affect the reported amounts of assets, liabilities and contingent liabilities at the date of the consolidated financial statements and reported amounts of revenues and expenses during the reporting period. Estimates and assumptions are continuously evaluated and are based on management’s experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances. However, actual outcomes can differ from these estimates. Information about significant sources of estimation uncertainty and judgments made by management in preparing the consolidated financial statements are described below. A. Attributable Reserve and Resource Estimates Stream, royalty and other interests are a significant class of assets of the Company, with a carrying value of $356.6 million at December 31, 2020 (2019 — $395.5 million). This amount represents the capitalized expenditures related to the acquisition of the stream, royalty and other interests net of accumulated depletion and any impairments. The Company estimates the reserves and resources relating to each interest. Reserves and Resources are estimates of the amount of minerals that can be economically and legally extracted from the mining properties at which the Company has Stream and royalty interests, adjusted where applicable to reflect the Company’s percentage entitlement to minerals produced from such mines. The public disclosures of Reserves and Resources that are released by the operators of the interests involve assessments of geological and geophysical studies and economic data and the reliance on a number of assumptions, including commodity prices and production costs. The estimates of Reserves and Resources may change based on additional knowledge gained subsequent to the initial assessment. Changes in the Reserve or Resource estimates may impact the carrying value of the Company’s stream, royalty and other interests and depletion charges. The Company’s stream and royalty interests are depleted on a units-of-production basis, with estimated recoverable Reserves and Resources being used to determine the depletion rate for each of the Company’s stream and royalty interests. These calculations require determination of the amount of recoverable Resources to be converted into Reserves. Changes to depletion rates are accounted for prospectively. B. Investments In the normal course of operations, the Company invests in equity interests of other entities. In such circumstances, management considers whether the facts and circumstances pertaining to each such investment result in the Company obtaining control, joint control or significant influence over the investee entity. In some cases, the determination of whether or not the Company controls, jointly controls or significantly influences the investee entities requires the application of significant management judgment to consider individually and collectively such factors as: • The purpose and design of the investee entity. • The ability to exercise power, through substantive rights, over the activities of the investee entity that significantly affect its returns. • The size of the Company’s equity ownership and voting rights, including potential voting rights. • The size and dispersion of other voting interests, including the existence of voting blocks. • Other investments in or relationships with the investee entity including, but not limited to, current or possible board representation, royalty and/or stream investments, loans and other types of financial support, material transactions with the investee entity, interchange of managerial personnel or consulting positions. • Other relevant and pertinent factors. If it is determined that the Company neither has control, joint control or significant influence over an investee entity, the Company accounts for the corresponding investment in equity interest at fair value through other comprehensive income as further described in note 2. C. Income Taxes The interpretation of existing tax laws or regulations in Canada, the United States of America, Australia, Argentina, Ecuador, Turkey, Guernsey, Mexico or any of the countries in which the mining operations are located or to which shipments of gold and other metals are made requires the use of judgment. Differing interpretation of these laws or regulations could result in an increase in the Company’s taxes, or other governmental charges, duties or impositions. To the extent there are uncertain tax provisions, the Company measures the impact of the uncertainty using the method that best predicts the resolution of the uncertainty. The judgements and estimates made to recognize and measure the effect of uncertain tax treatments are reassessed whenever circumstances change or when there is new information that affects those judgements. In addition, the recoverability of deferred income tax assets, including expected periods of reversal of temporary differences and expectations of future taxable income, are assessed by management at the end of each reporting period and adjusted, as necessary, on a prospective basis. Refer to note 10 for more information. D. Impairment of Assets There is judgment required to determine whether any indication of impairment exists at the end of each reporting period for each stream, royalty and other interest and the Hod Maden interest and other investments in associates, including assessing whether there are observable indications that the asset’s value has declined during the period. Management uses judgment when assessing whether there are indicators of impairment, such as significant changes in future commodity prices, discount rates, operator reserve and resource estimates or other relevant information received from the operators that indicates production from stream and royalty interests will not likely occur or may be significantly reduced in the future. If such an indication exists, the recoverable amount of the interest is estimated in order to determine the extent of the impairment (if any). The recoverable amount is the higher of the fair value less costs of disposal and value in use. The calculation of the recoverable amount requires the use of estimates and assumptions such as long-term commodity prices, discount rates, and operating performance. The recoverable amount is determined by calculating the present value of expected future cash flows. The discount rate is based on the Company’s weighted average cost of capital, adjusted for various risks. The expected future cash flows are management’s best estimates of expected future revenues and costs. Under each method, expected future revenues reflect the estimated future production for each mine at which the Company has a Stream or royalty based on detailed life of mine plans received from each of the mine operators. Included in these forecasts is the production of mineral resources that do not currently qualify for inclusion in proven and probable ore reserves where there is a high degree of confidence in its economic extraction. This is consistent with the methodology that is used to measure value beyond proven and probable reserves when determining the fair value attributable to acquired stream and royalty interests. Expected future revenues also reflect management’s estimated long term metal prices, which are determined based on current prices, forward pricing curves and forecasts of expected long-term metal prices prepared by analysts. These estimates often differ from current price levels, but are consistent with how a market participant would assess future long-term metal prices. Estimated future cash costs are established based on the terms of each Gold Stream, Stream, or royalty, as disclosed in note 15 to the financial statements. E. Accounting for Acquisition of Assets and Stream, Royalty and Other Interests The Company’s business is the acquisition of Gold Streams, Streams, and royalties. Each Stream, royalty and other interest has its own unique terms and judgement is required to assess the appropriate accounting treatment. The determination of whether an acquisition should be accounted for as a Stream, royalty and other interest or a financial instrument requires the consideration of factors such as (i) the terms of the agreement; (ii) the applicability of the own use exemption under IFRS 9; (iii) whether there is a contractual commitment to repay amounts under the Stream; and (iv) the expected timing and amount of future deliveries of gold, silver and other commodities under the Stream with reference to the existing mine plan. The assessment of whether an acquisition meets the definition of a business or whether assets are acquired is another area of key judgement. If deemed to be a business combination, applying the acquisition method to business combinations requires each identifiable asset and liability to be measured at its acquisition date fair value. The excess, if any, of the fair value of the consideration over the fair value of the net identifiable assets acquired is recognized as goodwill. The determination of the acquisition date fair values often requires management to make assumptions and estimates about future events. The assumptions and estimates with respect to determining the fair value of Stream, royalty and other interests generally require a high degree of judgement, and include estimates of mineral reserves and resources acquired, future metal prices, discount rates and conversion of reserves and resources. Changes in any of the assumptions or estimates used in determining the fair value of acquired assets and liabilities could impact the amounts assigned to assets and liabilities. F. Functional Currency The functional currency for each of the Company’s subsidiaries and associates is the currency of the primary economic environment in which the entity operates. Determination of functional currency may involve certain judgments to determine the primary economic environment and the Company reconsiders the functional currency of its entities if there is a change in events and conditions which determine the primary economic environment. G. COVID-19 In March 2020, the World Health Organization declared a global pandemic related to COVID-19. far-reaching. COVID-19 In the first quarter of 2020, the Company recorded a Stream, Royalty and Other Interests impairment of $7.9 million related to the Diavik Royalty (note 5c). There is heightened potential for further impairments or reversal of this and possibly other future impairments. In the current environment, assumptions about future commodity prices, exchange rates, and interest rates are subject to greater variability than normal, which could in future significantly affect the valuation of the Company’s assets, both financial and non-financial.

Financial Instruments

Financial Instruments	12 Months Ended
	Dec. 31, 2020
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Financial Instruments	4 – Financial Instruments A. Capital Risk Management The Company manages its capital such that it endeavors to continue as a going concern while maximizing the return to stakeholders through the optimization of the debt and equity balance. At December 31, 2020, the capital structure of the Company consists of $638.1 million (2019 - $570.9 million) of equity attributable to common shareholders, comprising issued share capital (note 9), accumulated reserves, retained earnings and accumulated other comprehensive loss. The Company was not subject to any externally imposed capital requirements with the exception of complying with certain covenants under the revolving credit agreement governing bank debt. The Company was in compliance with the debt covenants described in note 8 as at December 31, 2020. B. Fair Value Estimation The fair value hierarchy establishes three levels to classify the inputs of valuation techniques used to measure fair value. As required by IFRS 13, assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The three levels of the fair value hierarchy are described below: Level 1 | Level 2 | Level 3 | The following table sets forth the Company’s financial assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy as at December 31, 2020 and December 31, 2019. As at December 31, 2020: In $000s Total Quoted prices in Significant other Significant Short-term investments Convertible debt $ 1,852 $ — $ 1,852 $ — Long-term investments Common shares held $ 28,416 $ 28,416 $ — $ — Warrants and other 1,143 — 1,143 — Convertible debt 15,525 — 15,525 — $ 46,936 $ 28,416 $ 18,520 $ — As at December 31, 2019: In $000s Total Quoted prices in Significant other Significant Short-term investments Convertible debt $ 10,801 $ — $ 10,801 $ — Long-term investments Common shares held $ 52,325 $ 52,325 $ — $ — Warrants and other 4,623 — 4,623 — Convertible debt 15,892 — 15,892 — $ 83,641 $ 52,325 $ $ — The fair value of the Company’s other financial instruments which include cash and cash equivalents, trade and other receivables, loans receivable which are included in other assets, and trade and other payables approximate their carrying values at December 31, 2020 and December 31, 2019 due to their short-term nature. There were no transfers between the levels of the fair value hierarchy during the years ended December 31, 2020 and December 31, 2019. C. Credit Risk The Company’s credit risk is limited to cash and cash equivalents, loans receivable which are included in other assets, trade and other receivables and the Company’s investments in convertible debentures. The Company’s trade and other receivables is subject to the credit risk of the counterparties who own and operate the mines underlying Sandstorm’s royalty portfolio. In order to mitigate its exposure to credit risk, the Company closely monitors its financial assets and maintains its cash deposits in several high-quality financial institutions. The Company’s investments in convertible debentures are subject to the counterparties’ credit risk. In particular, the Company’s convertible debenture due from Americas Gold and Silver (“Americas Gold”) is subject to counterparty credit risk and the Company’s ability to realize on its security. The impact of expected credit losses on trade receivables and financial assets held at amortized cost is not material. D. Currency Risk Financial instruments that impact the Company’s net income or other comprehensive income due to currency fluctuations include: cash and cash equivalents, trade and other receivables and trade and other payables denominated in Canadian dollars. Based on the Company’s Canadian dollar denominated monetary assets and monetary liabilities at December 31, 2020 a 10% increase (decrease) of the value of the Canadian dollar relative to the United States dollar would not have a material impact on net income or other comprehensive income. E. Liquidity Risk The Company has in place a planning and budgeting process to help determine the funds required to support the Company’s normal operating requirements on an ongoing basis. In managing liquidity risk, the Company takes into account the amount available under the Company’s revolving credit facility, anticipated cash flows from operating activities and its holding of cash and cash equivalents. As at December 31, 2020, the Company had cash and cash equivalents of $113.8 million (December 31, 2019 — $7.0 million). Sandstorm holds common shares, convertible debentures, and warrants and other of other companies with a combined fair market value as at December 31, 2020 of $46.9 million (December 31, 2019 — $83.6 million). In addition, Sandstorm also holds common shares of Entrée Resources Ltd. with a market value of $17.8 million which are classified as an investment in associate and accounted for using the equity method. The daily exchange traded volume of these shares, including the shares underlying the warrants, may not be sufficient for the Company to liquidate its position in a short period of time without potentially affecting the market value of the shares. F. Other Price Risk The Company is exposed to equity price risk as a result of holding investments in other mining companies. The Company does not actively trade these investments. The equity prices of long-term investments are impacted by various underlying factors including commodity prices and the volatility in global markets as a result of COVID-19.

Stream, Royalty and Other Inter

Stream, Royalty and Other Interests	12 Months Ended
	Dec. 31, 2020
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Stream, Royalty and Other Interests	5 – Stream, Royalty and Other Interests A. Carrying Amount As of and for the year ended December 31, 2020: COST ACCUMULATED DEPLETION In $000s Opening Net Ending Opening Depletion Depletion Impairment Ending Carrying Aurizona, Brazil $ 11,091 $ — $ 11,091 $ 985 $ 1,067 $ — $ — $ 2,052 $ 9,039 Black Fox, Canada 37,817 — 37,817 29,412 1,014 — — 30,426 7,391 Bracemac-McLeod, Canada 21,495 — 21,495 18,099 1,485 — — 19,584 1,911 Chapada, Brazil 69,554 — 69,554 13,968 2,914 — — 16,882 52,672 Diavik, Canada 53,111 23 53,134 33,273 2,085 — 7,862 43,220 9,914 Fruta del Norte, Ecuador 33,259 8 33,267 34 1,256 — — 1,290 31,977 Hod Maden, Turkey 5,818 — 5,818 — — — — — 5,818 Houndé, Burkina Faso 45,101 19 45,120 8,515 3,816 — — 12,331 32,789 Hugo North Extension and Heruga, Mongolia 35,351 1 35,352 — — — — — 35,352 Karma, Burkina Faso 26,289 — 26,289 13,248 3,843 349 — 17,440 8,849 Ming, Canada 20,070 5 20,075 11,055 445 — — 11,500 8,575 Relief Canyon, United States 26,416 25 26,441 — 2,820 87 — 2,907 23,534 Santa Elena, Mexico 23,354 — 23,354 21,610 312 10 — 21,932 1,422 Yamana silver stream, Argentina 74,252 — 74,252 15,764 10,119 — — 25,883 48,369 Other Royalties 1 234,474 3,445 237,919 155,956 1,948 — 1,015 158,919 79,000 Total 2 $ 717,452 $ 3,526 $ 720,978 $ 321,919 $ 33,124 $ 446 $ 8,877 $ 364,366 $ 356,612 1 Includes Mt. Hamilton, Prairie Creek, Gualcamayo, Emigrant Springs, Mine Waste Solutions, San Andres, Thunder Creek, Hackett River, Lobo-Marte, Agi Dagi & Kirazli, HM Claim and others. 2 Stream, Royalty and Other Interests includes non-depletable assets of $58.4 million and depletable assets of $298.2 million. As of and for the year ended December 31, 2019: COST ACCUMULATED DEPLETION In $000s Opening Net Additions Ending Opening Depletion 1 Depletion in Impairment Ending Carrying Aurizona, Brazil $ 11,033 $ 58 $ 11,091 $ 310 $ 675 $ — $ — $ 985 $ 10,106 Bachelor Lake, Canada 24,029 4 24,033 23,564 469 — — 24,033 — Black Fox, Canada 37,799 18 37,817 28,091 1,321 — — 29,412 8,405 Bracemac-McLeod, Canada 21,495 — 21,495 16,521 1,578 — — 18,099 3,396 Chapada, Brazil 69,528 26 69,554 10,602 3,366 — — 13,968 55,586 Diavik, Canada 53,111 — 53,111 23,569 7,256 — 2,448 33,273 19,838 Fruta del Norte, Ecuador — 33,259 33,259 — 34 — — 34 33,225 Hod Maden, Turkey 5,818 — 5,818 — — — — — 5,818 Houndé, Burkina Faso 45,036 65 45,101 4,478 4,037 — — 8,515 36,586 Hugo North Extension and Heruga, Mongolia 35,351 — 35,351 — — — — — 35,351 Karma, Burkina Faso 26,289 — 26,289 9,873 3,375 — — 13,248 13,041 Ming, Canada 20,070 — 20,070 9,866 1,189 — — 11,055 9,015 Relief Canyon, United States — 26,416 26,416 — — — — — 26,416 Santa Elena, Mexico 23,354 — 23,354 21,058 552 — — 21,610 1,744 Yamana silver stream, Argentina 74,236 16 74,252 6,072 9,692 — — 15,764 58,488 Other Royalties 2 209,579 862 210,441 128,518 3,193 — 212 131,923 78,518 Total 3 $ 656,728 $ 60,724 $ 717,452 $ 282,522 $ 36,737 $ — $ 2,660 $ 321,919 $ 395,533 1 Depletion during the period in the Consolidated Statements of Income (loss) of $37.8 million is comprised of depletion expense for the period of $36.7 million, and $1.1 million from depletion in ending inventory as at December 31, 2018. 2 Includes Mt. Hamilton, Prairie Creek, Gualcamayo, Emigrant Springs, Mine Waste Solutions, San Andres, Thunder Creek, Hackett River, Lobo-Marte, Agi Dagi & Kirazli, HM Claim and others. 3 Stream, Royalty and Other Interests includes non-depletable assets of $56.4 million and depletable assets of $339.1 million. B. Significant updates and other transactions FRUTA DEL NORTE On January 18, 2019, the Company acquired a 0.9% NSR royalty on precious metals produced from the Fruta del Norte gold project in Ecuador, operated by Lundin Gold Inc. The NSR royalty was acquired from a private third party for $32.8 million in cash and covers all mining concessions held by Lundin Gold Inc. on the Fruta del Norte gold project. RELIEF CANYON On April 3, 2019, the Company entered into a $42.5 million financing package with Americas Gold and Silver Corp. (“Americas Gold”) which included a $25 million precious metal stream and an NSR on the Reli yon Mine ”), a $10 million convertible debenture and a $7.5 million private placement. Under the terms of the stream, Sandstorm is entitled to receive 32,022 ounces of gold over a 5.5 year period which began in the second quarter of 2020 (the “Fixed Deliveries”). After receipt of the Fixed Deliveries, the Company is entitled to purchase 4% of the gold and silver produced from the Relief Canyon Mine for ongoing per ounce cash payments equal to 30%–65% of the spot price of gold or silver, with the range dependent on the concession’s existing royalty obligations. In addition, Sandstorm will also receive a 1.4%–2.8% NSR on the area surrounding the Relief Canyon mine. Americas Gold may elect to reduce the 4.0% Stream and NSR on the Relief Canyon mine by delivering 4,000 ounces of gold to Sandstorm (the “Purchase Option”). The Purchase Option may be exercised by Americas Gold at any time and is subject to a 10% annual premium. Upon C. Impairment During the year ended December 31, 2020: Due to adverse diamond market conditions, partly exacerbated by the COVID-19 pandemic, the Company estimated the recoverable amount of the Diavik royalty and, during the year ended December 31, 2020, recorded an impairment charge of $7.9 mi During the year ended December 31, 2019: As a result of a continued decline in the price of diamonds, the Company estimated the recoverable amount of the Diavik royalty and recorded an impairment charge of $2.4 million. The recoverable amount of $19.8 million was determined using a discounted cash flow model in estimating the fair value less costs of disposal. This is a level 3 measurement due to the unobservable inputs in the model. Key assumptions used in the cash flow forecast were: a mine life of approximately 3 years, a diamond price ranging from $110–$130 per carat and a 4% discount rate.

Hod Maden and Other Investments

Hod Maden and Other Investments in Associates	12 Months Ended
	Dec. 31, 2020
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Hod Maden and Other Investments in Associates	6 – Hod Maden and Other Investments in Associates In $000s As at As at Hod Maden interest $ 96,666 $ 116,585 Entrée Resources Ltd. 16,240 — $ 112,906 $ 116,585 A. Hod Maden interest The Company has a 30% net profits interest in Artmin Madencilik Sanayi ve Ticaret A.S, incorporated in Turkey which owns and operates the Hod Maden project. This interest is accounted for using the equity method and its financial results are adjusted, where appropriate, to give effect to uniform accounting policies. The following table summarizes the changes in the carrying amount of the Company’s Hod Maden interest: In $000s Year Ended Year Ended Beginning of Year $ 116,585 $ 127,224 Company’s share of net loss of associate (360 ) (414 ) Capital investment 3,579 3,000 Currency translation adjustments (23,138 ) (13,225 ) End of Year $ 96,666 $ 116,585 Summarized financial information for the Company’s investment in this In $000s Year Ended Year Ended Administration expenses $ (1,387 ) $ (1,183 ) Other (expense) income 187 (197 ) Total net loss $ (1,200 ) $ (1,380 ) Company’s share of net loss of associate $ (360 ) $ (414 ) In $000s As at As at Current Assets $ 765 $ 1,747 Non-current 318,710 387,620 Total Assets $ 319,475 $ 389,367 Current Liabilities $ 518 $ 751 Non-current — — Total Liabilities $ 518 $ 751 Net Assets 318,957 388,616 Company’s share of net assets of associate $ 95,687 $ 116,585 Adjustments for differences in accounting policies and other 979 — Carrying amount of investment in associate 96,666 116,585 B. Entrée Resources Ltd. Through a series of acquisitions, spanning several years, the Company acquired 40,376,380 common shares and 1,657,317 warrants of Entrée Resources Ltd. (“Entrée”). As a result of its most recent purchases, which occurred on November 20, 2020, Sandstorm’s position in Entrée increased to over 20% on a fully diluted basis. As a result of the ownership position, the Company concluded that as at November 20, 2020, it had significant influence over Entrée and as such, the investment in associate would be accounted for under the equity method. The initial cost of the associate includes the fair value of the common shares previously held plus the cost of acquisitions in the period. As at December 31, 2020, this position represents approximately 22% of the common shares of Entrée on a non-diluted basis. The Company records its share of Entrée’s profit or loss including adjustments, where appropriate, to give effect to uniform accounting policies. Using the quoted price of Entrée’s common shares, the fair value of Sandstorm’s interest was $17.8 million as at December 31, 2020. The following table summarizes the changes in the carrying amount of the Company’s Entrée interest: In $000s Year Ended 1 Year Ended Beginning of Year $ — $ — Acquisition of i a 16,339 — Company’s share of net loss of associate (99 ) — End of Year $ 16,240 $ — 1 Information is for the reconstructed period November 20, 2020 to December 31, 2020. Summarized financial information for the Company’s investment in this 100 In $000s As at As at Current Assets $ 7,651 $ — Non-current Assets 152,133 — Total Assets $ 159,784 $ — Current Liabilities $ 184 $ — Non-current Liabilities 84,831 — Total Liabilities $ 85,015 $ — Net Assets 74,769 — Company’s share of net assets of associate $ 16,240 $ —

Investments

Investments	12 Months Ended
	Dec. 31, 2020
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Investments	7 As of and for the year ended December 31, 2020: In $000s Jan. 1, 2020 Additions Disposals Transfers Fair Value Dec. 31, 2020 Short-term investments Convertible debt instruments 1 $ 10,801 $ — $ (11,006 ) $ 556 $ 1,501 $ 1,852 Total short-term investments $ 10,801 $ — $ (11,006 ) $ 556 $ 1,501 $ 1,852 Non-current Common shares 2 $ 52,325 $ 11,456 $ (37,238 ) $ (16,339 ) $ 18,212 $ 28,416 Warrants and other 1 4,623 52 (5,732 ) — 2,200 1,143 Convertible debt instruments 1 15,892 60 — (556 ) 129 15,525 Total non-current $ 72,840 $ 11,568 $ (42,970 ) $ (16,895 ) $ 20,541 $ 45,084 Total Investments $ 83,641 $ 11,568 $ (53,976 ) $ (16,339 ) $ 22,042 $ 46,936 1 Fair value adjustment recorded within Net Income (loss) for the period. 2 Fair value adjustment recorded within Other Comprehensive Income (loss) for the period. During the year ended December 31, 2020, as part of the Company’s on-going non-core million. In addition, upon meeting certain accounting criteria, the Company’s investment in Entrée Resources’ common shares, fair valued at $16.3 million, was reclassified into investment in associate (note 6b). On June 30, 2020, Sandstorm received $10.4 million in cash from Equinox Gold Corp. (“Equinox”) as part of the final annual debenture payment. As a result, the Equinox convertible debenture has been fully repaid and no amounts under the debenture remain outstanding. As of and for the year ended December 31, 2019: In $000s Jan. 1, 2019 Additions Disposals Transfers Fair Value Dec. 31, 2019 Short-term investments Convertible debt instruments 1 $ 13,937 $ 725 $ (14,452) $ 8,541 $ 2,050 $ 10,801 Total short-term investments $ 13,937 $ 725 $ (14,452) $ 8,541 $ 2,050 $ 10,801 Non-current Common shares 2 $ 33,139 $ 24,834 $ (17,357) $ — $ 11,709 $ 52,325 Warrants and other 1 2,106 4 (27 ) — 2,540 4,623 Convertible debt instruments 1 10,998 9,279 (710 ) (8,541 ) 4,866 15,892 Total non-current $ 46,243 $ 34,117 $ (18,094) $ (8,541) $ 19,115 $ 72,840 Total Investments $ 60,180 $ 34,842 $ (32,546) $ — $ 21,165 $ 83,641 1 Fair value adjustment recorded within Net Income (loss) for the period. 2 Fair value adjustment recorded within Other Comprehensive Income (loss) for the period.

Revolving Facility and Deferred

Revolving Facility and Deferred Financing Costs	12 Months Ended
	Dec. 31, 2020
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Revolving Facility and Deferred Financing Costs	8 In December 2019, the Company amended its revolving credit agreement, allowing the Company to borrow up to $225 million with an additional uncommitted accordion of up to $75 million, for a total facility of up to $300 million (the “Revolving Facility”). The Revolving Facility is for general corporate purposes, from a syndicate of banks including the Bank of Nova Scotia, Bank of Montreal, National Bank of Canada, Canadian Imperial Bank of Commerce and Royal Bank of Canada (the “Syndicate”). The Revolving Facility matures on December 20, 2023 and is extendable by mutual consent of Sandstorm and the Syndicate. The amounts drawn on the Revolving Facility are subject to interest at LIBOR plus 1.875%–3.000% per annum, and the undrawn portion of the Revolving Facility is subject to a standby fee of 0.422%–0.675% per annum, both of which are dependent on the Company’s leverage ratio. Under the credit agreement, the Company is required to maintain a leverage ratio of net debt divided by EBITDA (as defined in the credit facility agreement) of less than or equal to 4.00:1.00 for each fiscal quarter. The Company must also maintain an interest coverage ratio of greater than or equal to 3.00:1.00 for each fiscal quarter. The Company is further required to maintain a tangible net worth greater than the aggregate of $136.8 million and 50% of positive net income for each fiscal quarter beginning with the fiscal quarter ended September 30, 2017. The Revolving Facility is secured against the Company’s assets, including the Company’s stream interests As of December 31, 2020, the Company was in compliance with the covenants and there was no drawn on Deferred financing costs are amortized on a straight-line basis over the term of the Revolving Facility. At December 31, 2020, deferred financing costs, net of accumulated amortization, were

Share Capital and Reserves

Share Capital and Reserves	12 Months Ended
	Dec. 31, 2020
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Share Capital and Reserves	9 A. Authorized Share Capital The Company is authorized to issue an unlimited number of common shares without par value. Under the Company’s normal course issuer bid (“NCIB”), the Company is able until April 5, 2021, to purchase up to 17.2 million common shares. The NCIB provides the Company with the option to purchase its common shares from time to time. During the year ended December 31, 2020, the Company, utilizing its previous NCIB, purchased and cancelled approximately 4.6 million common shares. In May 2020, the Company established an at-the-market B. Stock Options of the Company The Company has an incentive stock option plan (the “Option Plan”) whereby the Company may grant share options to eligible employees, officers, directors and consultants at an exercise price, expiry date, and vesting conditions to be determined by the Board of Directors. The maximum expiry date is five years from the grant date. All options are equity settled. The Option Plan permits the issuance of options which, together with the Company’s other share compensation arrangements, may not exceed 8.5% of the Company’s issued common shares as at the date of the grant. During the year ended December 31, 2020, the Company issued 2,812,000 options with a weighted average exercise price of CAD $ $ , dividend yield of 0.85 al A summary of the Company’s options and the changes for the year is as follows: Number of options Weighted average exercise 1 Options outstanding at December 31, 2018 9,322,641 4.58 Granted 1,427,000 8.89 Exercised (3,181,108 ) (2.99 ) Options outstanding at December 31, 2019 7,568,533 6.06 Granted 2,812,000 9.43 Exercised (1,253,430 ) (4.42 ) Options outstanding at December 31, 2020 9,127,103 7.33 1 For options exercisable in British Pounds Sterling (“GBP”), exercise price is translated to Canadian Dollars (“CAD”) using the period end exchange rate. The weighted A summary of the Company’s share purchase options as of December 31, 2020 is as follows: Year of expiry Number outstanding Vested Exercise 1 Weighted average 1, 2 2021 699,000 699,000 4.96 4.96 2022 1,067,438 1,067,438 4.98 - 15.00 5.37 2023 3,121,665 2,078,335 5.92 5.92 2024 1,427,000 475,670 8.89 8.89 2025 2,812,000 — 9.43 — 9,127,103 4,320,443 5.96 1 For options exercisable in GBP, exercise price is translated to CAD using the period end exchange rate. 2 Weighted average exercise price of options that are exercisable. C. Share Purchase Warrants A summary of the Company’s warrants and the changes for the year is as follows: Number of warrants Shares to be issued upon Warrants outstanding at December 31, 2018 22,965,400 22,965,400 Exercised (1,506,051 ) (1,506,051 ) Warrants outstanding at December 31, 2019 21,459,349 21,459,349 Exercised (21,091,325 ) (21,091,325 ) Expired unexercised (368,024 ) (368,024 ) Warrants — — The weighted-average share price, at the time of exercise, for those warrants that were exercised during the year ended December 31, 2020 was $6.88 per share (year ended December 31, 2019 — $6.98). In April 2020, the Company completed the early warrant exercise incentive program whereby 15 million outstanding and unlisted share purchase warrants were exercised at a price of $3.35 per warrant (reduced from $3.50 per warrant), resulting in an additional $50.3 million in cash. The modification resulted in a $2.1 million increase to the fair value of the warrants, the cost of which was recorded within equity as a share issuance cost. D. Restricted Share Rights The Company has a restricted share plan (the “Restricted Share Plan”) whereby the Company may grant restricted share rights (“RSRs”) to eligible employees, officers, directors and consultants at an expiry date to be determined by the Board of Directors. Each restricted share right entitles the holder to receive a common share of the Company without any further consideration. The Restricted Share Plan permits the issuance of up to a maximum of 4,500,000 restricted share rights. During the year ended December 31, 2020, the Company granted 307,000 RSRs with a fair value of $2.3 million, a three year vesting term, and a weighted average grant date fair value of $7.39 per unit. As of December 31, 2020, the Company had 2,645,165 RSRs outstanding. E. Diluted Earnings Per Share Diluted earnings per share is calculated based on the following: In $000s Year Ended Year Ended Net income for the year $ 13,817 $ 16,397 Basic weighted average number of shares 187,507,754 177,619,824 Basic earnings per share $ 0.07 $ 0.09 Effect of dilutive securities Stock options 2,732,900 2,397,114 Warrants 4,318,675 8,154,232 Restricted share rights 2,348,511 2,048,843 Diluted weighted average number of common shares 196,907,840 190,220,013 Diluted earnings per share $ 0.07 $ 0.09 The following table lists the number of potentially dilutive securities excluded from the computation of diluted earnings per share because the exercise prices exceeded the average market value of the common shares of CAD $ $ Year Ended Year Ended Stock options 217,376 131,266 Restricted share rights — 52,411

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2020
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Income Taxes	10 The income tax expense differs from the amount that would result from applying the federal and provincial income tax rate to the net income before income tax e These differences result from the following items: In $000s Year Ended Year Ended Income before income taxes $ 24,276 $ 23,008 Canadian federal and provincial income tax rates 27 % 27 % Income tax expense based on the above rates $ 6,555 $ 6,212 Increase (decrease) due to: Non-deductible $ 1,525 $ 1,409 Non-taxable or loss (433 ) (1,209 ) Withholding taxes 1,940 1,434 Change in valuation allowance and o 872 (1,235 ) Income tax expense $ 10,459 $ 6,611 The deferred tax assets and liabilities are shown below: In $000s As at As at Deferred Income Tax Assets Non-capital $ — $ 27,606 Share issue costs and other — 1,215 Stream inter ests — (24,518 ) Total deferred income tax assets $ — $ 4,303 Deferred Income Tax Liabilities Non-capital losse s $ 24,922 $ — Investments and other (735 ) — Stream interests (29,664 ) (196 ) Total deferred income tax liabilities $ (5,477 ) $ (196 ) Total deferred income tax liabilities $ (5,477 ) $ 4,107 Deferred tax assets and liabilities have been offset where they relate to income taxes levied by the same taxation authority and the Company has the legal right and intent to offset. Non-capital The movement in net deferred income taxes is shown below: In $000s Year Ended Year Ended Balance, beginning of the year $ 4,107 $ 8,528 Recognized in net income (loss) for the year (7,595 ) (4,371 ) Recognized in equity 357 — Recognized in other comprehensive income (loss) for the year (2,346 ) (50 ) Balance, end of year $ (5,477 ) $ 4,107 The Company has deductible unused tax losses, for which a deferred tax asset has been recognized, expiring as follows: In $000s Location Amount Expiration Non-capital Canada $ 92,303 2030 - 2036 The aggregate amount of deductible temporary differences associated with capital losses and other items, for which deferred income tax assets have not been recognized as at December 31, 2020 are $13.0 million (2019 — $14.3 million). No deferred tax asset is recognized in respect of these items because it is not probable that future taxable capital gains or taxable income will be available against which the Company can utilize the benefit.

Administration Expenses

Administration Expenses	12 Months Ended
	Dec. 31, 2020
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Administration Expenses	11 The administration expenses for the Company are as follows: In $000s Year Ended Year Ended Corporate administration $ 2,128 $ 2,309 Employee benefits and salaries 2,276 2,262 Professional fees 924 785 Administration expenses before share based compensation $ 5,328 $ 5,356 Equity settled share based compensation (a non-cash 3,007 2,918 Total administration expenses $ 8,335 $ 8,274

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2020
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Supplemental Cash Flow Information	12 In $000s Year Ended Year Ended Change in non-cash Trade receivables and other $ (553 ) $ (2,585 ) Trade and other payables (2,169 ) (780 ) Net decrease in cash $ (2,722 ) $ (3,365 ) Significant non-cash Common shares received in consideration of a convertible debenture payment $ — $ 10,912

Other Long-Term Assets

Other Long-Term Assets	12 Months Ended
	Dec. 31, 2020
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Other Long-Term Assets	13 – Other Long-Term Assets In $000s Year Ended December 31, 2020 Year Ended December 31, 2019 Loan receivable $ 5,001 $ — Right of use asset, net of amortization 2,651 3,138 Deferred financing costs 1,691 2,258 Other 1,600 374 To tal other long - $ 10,943 $ 5,770

Key Management Compensation

Key Management Compensation	12 Months Ended
	Dec. 31, 2020
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Key Management Compensation	14 – Key Management Compensation The remuneration of directors and those persons having authority and responsibility for planning, directing and controlling activities of the Company are as follows: In $000s Year Ended Year Ended Salaries and benefits $ 1,561 $ 2,541 Share based payments 4,068 3,761 Total key management compensation expense $ 5,629 $ 6,302

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2020
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Commitments and Contingencies	15 – Commitments and Contingencies In connection with its commodity streams, the Company has committed to purchase the following: Stream % of Life of Mine Gold 5, 6, 7, 8, 9 Per Ounce Cash Payment: 1, 2, 3, 4 Black Fox 8% $561 Chapada 4.2% 30% of copper spot price Entrée 5.62% on Hugo North Extension and 4.26% on Heruga $220 Karma 26,875 ounces over 5 years and 20% of gold spot price Ming 25% of the first 175,000 ounces of gold produced, and 12% thereafter $nil Relief Canyon 32,022 ounces over 5.5 years and 4% thereafter Varies Santa Elena 20% $464 Yamana silver stream 20% 30% of silver spot price 1 Subject to an annual inflationary adjustment except for Ming. 2 For the Relief Canyon stream, after receipt of 32,022 gold ounces (the cost of which is nil), the Company is entitled to purchase 4.0% of the gold and silver produced from the Relief Canyon m ine 3 For the Entrée Gold Stream, after approximately 8.6 4 For the Entrée silver stream, percentage of life of mine is 5.62% on Hugo North Extension and 4.26% on Heruga which the Company can purchase for the lesser of the prevailing market price and $5 per ounce of silver until 40.3 5 For the Entrée Gold and silver stream, percentage of life of mine is 5.62% on Hugo North Extension and 4.26% on Heruga if the minerals produced are contained below 560 metres in depth. 6 For the Entrée Gold and silver stream, percentage of life of mine is 8.43% on Hugo North Extension and 6.39% on Heruga if the minerals produced are contained above 560 metres in depth. 7 For the Entrée copper stream, the Company has committed to purchase an amount equal to 0.42% of the copper produced from the Hugo North Extension and Heruga deposits. If the minerals produced are contained above 560 metres in depth, then the commitment increases to 0.62% for both the Hugo North Extension and Heruga deposits. Sandstorm will make ongoing per pound cash payments equal to the lesser of $0.50 and the then prevailing market price of copper, until 9.1 billion pounds of copper have been produced from the entire joint venture property. Thereafter, the ongoing per pound payments will increase to the lesser of $1.10 and the then prevailing market price of copper. 8 For the Chapada copper stream, the Company has committed to purchase an amount equal to 4.2% of the copper produced (up to an annual maximum of 3.9 million pounds of copper) until the mine has delivered 39 million pounds of copper to Sandstorm; then 3.0% of the copper produced until, on a cumulative basis, the mine has delivered 50 million pounds of copper to Sandstorm; then 1.5% of the copper produced thereafter, for the life of the mine. 9 Under the terms of the Yamana silver stream, Sandstorm has agreed to purchase an amount of silver from Cerro Moro equal to 20% of the silver produced (up to an annual maximum of 1.2 million ounces of silver), until Yamana has delivered to Sandstorm 7.0 million ounces of silver; then 9.0% of the silver produced thereafter. Sandstorm has been informed that a third party commenced legal proceedings against it in a Brazilian court. The proceedings involve severance owed to former employees of Colossus Mineração Ltda., a Brazilian subsidiary company of Colossus Minerals Inc. (an entity with which Sandstorm entered into a Stream). Since these severance claims, estimated to be approximately $6 million, remain outstanding, the claimants are seeking to recoup their claims from Sandstorm. Sandstorm intends on defending itself as it believes the case is without merit.

Segmented Information

Segmented Information	12 Months Ended
	Dec. 31, 2020
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Segmented Information	16 – Segmented Information The Company’s reportable operating segments, which are components of the Company’s business where separate financial information is available and which are evaluated on a regular basis by the Company’s Chief Executive Officer, who is the Company’s chief operating decision maker, for the purpose of assessing performance, are summarized in the tables below: For the year ended December 31, 2020: In $000s Product Sales Royalty Cost of sales Depletion Stream, royalty impairments Other Income Cash flow from Aurizona, Brazil Gold $ — $ 8,850 $ — $ 1,067 $ — $ — $ 7,783 $ 7,950 Black Fox, Canada Gold 3,693 — 1,194 1,014 — — 1,485 2,500 Bracemac-McLeod, Canada 1 Various — 2,946 — 1,485 — — 1,461 3,234 Chapada, Brazil Copper 9,904 — 3,021 2,914 — — 3,969 6,883 Diavik, Canada Diamonds — 2,716 — 2,085 7,862 392 (7,623 ) 3,075 Fruta del Norte, Ecuador Gold — 3,302 — 1,256 — — 2,046 1,408 Houndé, Burkina Faso Gold — 8,740 — 3,816 — — 4,924 6,633 Karma, Burkina Faso Gold 8,184 — 1,619 3,843 — — 2,722 6,438 Ming, Canada Gold 835 — — 445 — — 390 835 Relief Canyon, United States Gold 7,096 — — 2,820 — — 4,276 7,096 Santa Elena, Mexico Gold 9,749 — 2,552 312 — — 6,885 7,100 Yamana silver stream, Argentina Silver 19,199 — 5,660 10,119 — — 3,420 13,540 Other Royalties 2 Various — 7,811 — 1,948 1,015 — 4,848 6,718 Total Segments $ 58,660 $ 34,365 $ 14,046 $ 33,124 $ 8,877 $ 392 $ 36,586 $ 73,410 Corporate: Administration & Project evaluation expenses $ — $ — $ — $ — $ — $ — $ (13,868 ) $ (7,728 ) Foreign exchange loss — — — — — — (345 ) — Gain on revaluation of investments — — — — — — 3,830 — Finance expense, net — — — — — — (1,792 ) 94 Other — — — — — 135 (135 ) (160 ) Total Corporate $ — $ — $ — $ — $ — $ 135 $ (12,310 ) $ (7,794 ) Consolidated $ 58,660 $ 34,365 $ 14,046 $ 33,124 $ 8,877 $ 527 $ 24,276 $ 65,616 1 Royalty revenue from Bracemac-McLeod consists of $1.4 million from copper and $1.5 2 Where a stream and royalty represents less than of the Company’s sales, gross margin or aggregate asset book value and represents a royalty on gold, silver or other metal, the royalty interest has been summarized under Other Royalties. Other Royalties includes royalty revenue from Gualcamayo, Emigrant Springs, Mine Waste Solutions, San Andres, Thunder Creek, HM Claim, Triangle Zone and others. Includes royalty revenue from royalty interests located in Canada of $3.2 million, the United States of $0.6 million, Argentina of $1.1 million, Honduras of $ For the year ended December 31, 2019: In $000s Product Sales Royalty Cost of sales Depletion Stream, royalty impairments Other Income Cash flow from Aurizona, Brazil Gold $ — $ 3,357 $ — $ 675 $ — $ — $ 2,682 $ 1,757 Bachelor Lake, Canada Gold 8,532 — 3,000 469 — — 5,063 5,555 Black Fox, Canada Gold 3,858 — 1,540 1,321 — — 997 2,318 Bracemac-McLeod, Canada 1 Various — 3,256 — 1,578 — — 1,678 3,130 Chapada, Brazil Copper 11,008 — 3,311 3,366 — — 4,331 7,697 Diavik, Canada Diamonds — 5,674 — 7,256 2,448 — (4,030 ) 5,924 Houndé, Burkina Faso Gold — 6,425 — 4,037 — — 2,388 5,037 Karma, Burkina Faso Gold 8,156 — 1,634 3,775 — — 2,747 6,647 Ming, Canada Gold 3,760 — — 1,889 — — 1,871 3,760 Santa Elena, Mexico Gold 13,066 — 4,252 560 — — 8,254 8,832 Yamana silver stream, Argentina Silver 15,222 — 4,549 9,692 — — 981 10,672 Other Royalties 2 Various — 7,120 — 3,227 212 (340 ) 4,021 4,684 Total Segments $ 63,602 $ 25,832 $ 18,286 $ 37,845 $ 2,660 $ (340 ) $ 30,983 $ 66,013 Corporate: Administration & Project evaluation expenses $ — $ — $ — $ — $ — $ — $ (14,184 ) $ (8,557 ) Foreign exchange loss — — — — — — (86 ) — Gain on revaluation of investments — — — — — — 9,456 — Finance expense, net — — — — — — (2,747 ) 373 Other — — — — — 414 (414 ) (490 ) Total Corporate $ — $ — $ — $ — $ — $ 414 $ (7,975 ) $ (8,674 ) Consolidated $ 63,602 $ 25,832 $ 18,286 $ 37,845 $ 2,660 $ 74 $ 23,008 $ 57,339 1 Royalty revenue from Bracemac-McLeod consists of $1.2 million from copper and $2.1 million from zinc. 2 Where a stream and royalty inter es Thunder Creek, HM Claim, Triangle Zone and others. Includes royalty revenue from royalty interests located in Canada of $2.2 million, the United States of $ Total assets as of: In $000s December 31, 2020 December 31, 2019 Aurizona $ 11,539 $ 11,706 Black Fox 7,391 8,405 Bracemac-McLeod 2,142 3,915 Chapada 52,672 55,586 Diavik 10,564 21,238 Fruta del Norte 33,377 33,300 Hod Maden 1 102,484 122,403 Houndé 33,374 37,596 Hugo North Extension and Heruga 2 51,592 35,351 Karma 9,356 13,041 Ming 8,575 9,015 Relief Canyon 23,621 26,416 Santa Elena 1,511 1,744 Yamana silver stream 48,369 58,488 Other Royalties 3 81,149 80,281 Total Segments $ 477,716 $ 518,485 Corporate: Cash and cash equivalents 113,776 6,971 Investments 46,936 83,641 Deferred income tax assets — 4,303 Other assets 11,493 9,775 Total Corporate $ 172,205 $ 104,690 Consolidated $ 649,921 $ 623,175 1 Includes royalty interest of $5.8 million and investment in associate of $96.7 million at December 31, 2020. Includes royalty interest of $5.8 million and investment in associate of $116.6 million at December 31, 2019. 2 Includes royalty interest of $35.4 million and investment in associate of $16.2 million at December 31, 2020. Includes royalty interest of $35.4 million at December 31, 2019. 3 Where a stream and royalty interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and represents a royalty on gold, silver or other metal, the royalty interest has been summarized under Other Royalties. Includes Mt. Hamilton, Prairie Creek, Gualcamayo, Emigrant Springs, Mine Waste Solutions, San Andres, Thunder Creek, Hackett River, Lobo-Marte, Agi Dagi & Kirazli, HM Claim, Triangle Zone and others. Non-current In $000s December 31, 2020 1 December 31, 2019 1 North America Canada $ 54,013 $ 68,083 USA 39,113 41,994 Mexico 4,598 1,835 South & Central America Argentina $ 62,039 $ 72,739 Brazil 65,075 69,057 Ecuador 31,977 33,226 French Guiana 5,160 5,160 Chile 2,460 2,460 Africa Burkina Faso $ 41,749 $ 49,688 South Africa 2,980 3,744 Other Turkey $ 106,402 $ 126,644 Mongolia 52,235 35,992 Australia 3,401 3,661 Other 4,258 3,605 Consolidated $ 475,460 $ 517,888 1 Includes Stream, royalty and other inter ests

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
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Statement of Compliance	A. Statement of Compliance These consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”).
Basis of Presentation	B. Basis of Presentation These consolidated financial statements have been prepared on a historical cost basis except for certain financial instruments, which are measured at fair value. The consolidated financial statements are presented in United States dollars, and all values are rounded to the nearest thousand except as otherwise indicated.
Principles of Consolidation	C. Principles of Consolidation These consolidated financial statements include the accounts of the Company and its subsidiaries (all wholly owned), Sandstorm Gold (Canada) Ltd., Bridgeport Gold Inc., Inversiones Mineras Australes Holdings (BVI) Inc., Inversiones Mineras Australes S.A., Premier Royalty U.S.A. Inc., SA Targeted Investing Corp., Sandstorm Metals & Energy (Canada) Holdings Ltd., Sandstorm Metals & Energy (Canada) Ltd., Sandstorm Metals & Energy (US) Inc., Mariana Resources Limited and Mariana Turkey Limited. Subsidiaries are fully consolidated from the date the Company obtains control and continue to be consolidated until the date that control ceases. Control is achieved when the Company is exposed to, or has rights to, variable returns from its involvement with the entity and has the ability to affect those returns through its power over the entity. All intercompany balances, transactions, revenues and expenses have been eliminated on consolidation.
Business Combinations	D. Business Combinations On the acquisition of a business, the acquisition method of accounting is used, whereby the purchase consideration is allocated to the identifiable assets and liabilities on the basis of fair value at the date of acquisition. Provisional fair values allocated at a reporting date are finalized as soon as the relevant information is available, within a period not to exceed twelve months from the acquisition date with retrospective restatement of the impact of adjustments to those provisional fair values effective as at the acquisition date. Incremental costs related to acquisitions are expensed as incurred. When the amount of purchase consideration is contingent on future events, the initial cost of the acquisition recorded includes an estimate of the fair value of the contingent amounts expected to be payable in the future. When the fair value of contingent consideration as at the date of acquisition is finalized before the purchase price allocation is finalized, the adjustment is allocated to the identifiable assets and liabilities acquired. Subsequent changes to the estimated fair value of contingent consideration are recorded in the Consolidated Statements of Income (Loss). When the cost of the acquisition exceeds the fair values of the identifiable net assets acquired, the difference is recorded as goodwill. If the fair value attributable to the Company’s share of the identifiable net assets exceeds the cost of acquisition, the difference is recognized as a gain in the Consolidated Statements of Income (Loss). Non-controlling
Investment in Associate	E. Investment in Associate An associate is an entity over which the Company has significant influence and is neither a subsidiary nor a joint arrangement. The Company has significant influence when it has the power to participate in the financial and operating policy decisions of the associate but does not have control or joint control over those policies. The Company accounts for its investments in associates using the equity method. Under the equity method, the Company’s investment in associates are initially recognized at cost when acquired and subsequently increased or decreased to recognize the Company’s share of net income and losses of the associate, after any adjustments necessary to give effect to uniform accounting policies, any other movement in the associate’s reserves, and for impairment losses after the initial recognition date. The Company’s share of income and losses of the associate is recognized in net income during the period. Dividends received from the associate are accounted for as a reduction in the carrying amount of the Company’s investment.
Goodwill	F. Goodwill The Company allocates goodwill arising from business combinations to each cash-generating unit or group of cash-generating units that are expected to receive the benefits from the business combination. Irrespective of any indication of impairment, the recoverable amount of the cash-generating unit or group of cash-generating units to which goodwill has been allocated is tested annually for impairment and when there is an indication that the goodwill may be impaired. Any impairment is recognized as an expense immediately. Any impairment of goodwill is not subsequently reversed.
Stream, Royalty and Other Interests	G. Stream, Royalty and Other Interests Stream, royalty and other interests consist of acquired royalty and stream metal purchase agreements. These interests are recorded at cost and capitalized as tangible assets with finite lives. They are subsequently measured at cost less accumulated depletion and accumulated impairment losses, if any. Project evaluation costs that are not related to a specific agreement are expensed in the period incurred. Stream, royalty and other interests related to producing mines are depleted using the units-of-production On acquisition of a stream, royalty or other interest, an allocation of its cost is attributed to the exploration potential of the interest and is recorded as a non-depletable asset on the acquisition date. The value of the exploration potential is accounted for in accordance with IFRS 6, Exploration and Evaluation of Mineral Resources and is not depleted until such time as the technical feasibility and commercial viability have been established at which point the value of the asset is accounted for in accordance with IAS 16, Property, Plant and Equipment.
Impairment of Stream, Royalty and Other Interests	H. Impairment of Stream, Royalty and Other Interests Evaluation of the carrying values of each stream and royalty interest is undertaken when events or changes in circumstances indicate that the carrying values may not be recoverable and at each reporting period. If any indication of impairment exists, the recoverable amount is estimated to determine the extent of any impairment loss. The recoverable amount is the higher of the fair value less costs of disposal and value in use. Fair value is the price that would be received from selling an asset in an orderly transaction between market participants at the measurement date. Costs of disposal are incremental costs directly attributable to the disposal of an asset. Fair value less costs of disposal is usually estimated using a discounted cash flow approach. Estimated future cash flows are calculated using estimated production, sales prices, and a discount rate. Estimated production is determined using current reserves and the portion of resources expected to be classified as mineral reserves as well as exploration potential expected to be converted into resources. Estimated sales prices are determined by reference to an average of long-term metal price forecasts by analysts and management’s expectations. The discount rate is estimated using an average discount rate incorporating analyst views to value precious metal royalty companies. Value in use is determined as the future value of present cash flows expected to be derived from continuing use of an asset in its present form for those assets where value in use exceeds fair value less costs of disposal. If it is determined that the recoverable amount is less than the carrying value, then an impairment is recognized within net income (loss) immediately. An assessment is made at each reporting period if there is any indication that a previous impairment loss may no longer exist or has decreased. If indications are present, the carrying amount of the stream and royalty interest is increased to the revised estimate of its recoverable amount, but so that the increased carrying amount does not exceed the carrying amount net of depletion that would have been determined had no impairment loss been recognized for the stream and royalty interest in previous periods.
Exploration Assets	I. Exploration Assets All costs incurred prior to obtaining the legal right to undertake exploration and evaluation activities on a project are expensed in the period incurred. Exploration and evaluation costs arising following the acquisition of an exploration license are capitalized on a project-by-project Upon demonstration of the technical and commercial feasibility of a project and a development decision, any past exploration and evaluation costs related to that project are subject to an impairment test and are reclassified in accordance with IAS 16, Property Plant and Equipment. Management assesses exploration assets for impairment at each reporting period or when facts and circumstances suggest that the carrying value of capitalized exploration costs may not be recoverable.
Revenue Recognition	J. Revenue Recognition Revenue is comprised of revenue earned in the period from contracts with customers under each of its royalty and stream interests. The Company has determined that each unit of a commodity that is delivered to a customer under a royalty and stream interest is a performance obligation for the delivery of a good that is separate from each other unit of the commodity to be delivered under the same arrangement. In accordance with IFRS 15, the Company recognizes revenue to depict the transfer of the relevant commodity to customers in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those commodities. For Stream interests, revenue recognition occurs when the relevant commodity received from the stream operator is transferred by the Company to its third-party customers. For royalty interests, revenue recognition occurs when the relevant commodity is transferred to the end customer by the operator of the royalty property. Revenue is measured at the fair value of the consideration received or receivable when management can reliably estimate the amount, pursuant to the terms of the royalty agreement. In some instances, the Company will not have access to sufficient information to make a reasonable estimate of consideration to which it expects to be entitled and, accordingly, revenue recognition is deferred until management can make a reasonable estimate. Differences between estimates and actual amounts are adjusted and recorded in the period that the actual amounts are known.
Foreign Currency Translation	K. Foreign Currency Translation The functional currency of the Company and its subsidiaries is the principal currency of the economic environment in which they operate. For the Company and its subsidiaries Sandstorm Gold (Canada) Ltd., Bridgeport Gold Inc., Inversiones Mineras Australes S.A., Inversiones Mineras Australes Holdings (BVI) Inc., Premier Royalty U.S.A. Inc., SA Targeted Investing Corp., Sandstorm Metals & Energy (Canada) Holdings Ltd., Sandstorm Metals & Energy (Canada) Ltd., Sandstorm Metals & Energy (US) Inc., Mariana Resources Limited, Mariana Turkey Limited and the Company’s Entrée Resources Ltd. associate, the functional currency is the U.S. dollar. The functional currency of the Company’s Hod Maden interest associate is the Turkish Lira. To translate the Hod Maden interest to the presentation currency of the U.S. dollar, all assets and liabilities are translated using the exchange rate as of the reporting date and all income and expenses are translated using the average exchange rates during the period. All resulting exchange differences are recognized in other comprehensive income (loss). Transactions in foreign currencies are initially recorded in the entity’s functional currency as the rate on the date of the transaction. Monetary assets and liabilities denominated in foreign currencies are translated using the closing rate as at the reporting date.
Financial Instruments	L. Financial Instruments The Company’s financial instruments consist of cash and cash equivalents, trade receivables and other, short and long-term investments Cash and cash equivalents, trade receivables and other, and loans receivable which are included in other assets are classified as financial assets at amortized cost and trade and other payables and bank debt are classified as financial liabilities at amortized cost. Both financial assets at amortized cost and financial liabilities at amortized cost are measured at amortized cost using the effective interest method. The company’s financial assets which are subject to credit risk include cash and cash equivalents, trade receivables and other and loans receivable which are included in other assets. Application of the expected credit loss model at the date of adoption did not have a significant impact on the Company’s financial assets because the Company determined that the expected credit losses on its financial assets were nominal. There were no material impairment losses recognized on financial assets during the years ended December 31, 2020 and December 31, 2019 . Investments in common shares are held for long-term strategic purposes and not for trading. The Company has made an irrevocable election to designate all these investments as fair value through other comprehensive income (“FVTOCI”) in order to provide a more meaningful presentation based on management’s intention, rather than reflecting changes in fair value in net income. Such investments are measured at fair value at the end of each reporting period, with any gains or losses arising on re-measurement Investments in warrants and convertible debt instruments are classified as fair value through profit or loss (“FVTPL”). These warrants re-measurement Transaction costs on initial recognition of financial instruments classified as FVTPL are expensed as incurred. Transaction costs incurred on initial recognition of financial instruments classified as loans and receivables, FVTOCI and other financial liabilities are recognized at their fair value amount and offset against the related loans and receivables or capitalized when appropriate. Financial assets are derecognized when the contractual rights to the cash flows from the asset expire. Financial liabilities are derecognized only when the Company’s obligations are discharged, cancelled or they expire. On derecognition , the difference between the carrying amount (measured at the date of derecognition ) and the consideration received (including any new asset obtained less any new liability obtained) is recognized in profit or loss.
Inventory	M. Inventory When refined gold or the applicable commodity, under the Stream agreement, is delivered to the Company, it is recorded as inventory. The amount recognized for inventory includes both the cash payment and the related depletion associated with the related Stream interest.
Cash and Cash Equivalents	N. Cash and Cash Equivalents Cash and cash equivalents include cash on account, demand deposits and money market investments with maturities from the date of acquisition of three months or less, which are readily convertible to known amounts of cash and are subject to insignificant changes in value.
Income Taxes	O. Income Taxes Current income tax assets and liabilities are measured at the amount expected to be recovered from or paid to the taxation authorities. The tax rates and tax laws used are those that are substantively enacted at the reporting date. Deferred income taxes are provided for using the liability method on temporary differences at the reporting date between the tax bases of assets and liabilities and their carrying amounts for accounting. The change in the net deferred income tax asset or liability is included in income except for deferred income tax relating to equity items which is recognized directly in equity, and relating to investments in common shares designated as FVTOCI which is recognized in other comprehensive income. The income tax effects of differences in the periods when revenue and expenses are recognized in accordance with Company accounting practices, and the periods they are recognized for income tax purposes are reflected as deferred income tax assets or liabilities. Deferred income tax assets and liabilities are measured using the substantively enacted statutory income tax rates which are expected to apply to taxable income in the years in which the assets are realized or the liabilities settled. A deferred tax asset is recognized for unused tax losses, tax credits and deductible temporary differences to the extent that it is probable that future taxable profits will be available for utilization. Deferred income tax assets and liabilities are offset only if a legally enforceable right exists to offset current tax assets against liabilities and the deferred tax assets and liabilities relate to income taxes levied by the same taxation authority on the same taxable entity and are intended to be settled on a net basis. The determination of current and deferred taxes requires interpretations of tax legislation, estimates of expected timing of reversal of deferred tax assets and liabilities, and estimates of future earnings.
Share Capital and Share Purchase Warrants	P. Share Capital and Share Purchase Warrants The proceeds from the issue of units are allocated between common shares and share purchase warrants (with an exercise price denominated in U.S. dollars) on a pro-rata
Earnings Per Share	Q. Earnings Per Share Basic earnings per share is computed by dividing the net income available to common shareholders by the weighted average number of common shares issued and outstanding during the period. Diluted earnings per share is calculated assuming that outstanding share options and share purchase warrants, with an average market price that exceeds the average exercise prices of the options and warrants for the year, are exercised and the proceeds are used to repurchase shares of the Company at the average market price of the common shares for the year.
Share Based Payments	R. Share Based Payments The Company recognizes share based compensation expense for all share purchase options and restricted share rights (“RSRs”) awarded to employees, officers and directors based on the fair values of the share purchase options and RSRs at the date of grant. The fair values of share purchase options and RSRs at the date of grant are expensed over the vesting periods of the share purchase options and RSRs, respectively, with a corresponding increase to equity. The fair value of share purchase options is determined using the BSM with market related inputs as of the date of grant. Share purchase options with graded vesting schedules are accounted for as separate grants with different vesting periods and fair values. The fair value of RSRs is the market value of the underlying shares at the date of grant. At the end of each reporting period, the Company re-assesses The BSM requires management to estimate the expected volatility and expected term of the equity instrument, the risk-free rate of return over the term, expected dividends, and the number of equity instruments expected to ultimately vest. The Company uses its competitors market data with respect to expected volatility and expected dividend yield to the extent these factors are indicative of the Company’s future expectations. The expected term is estimated using historical exercise data, and the number of equity instruments expected to vest is estimated using historical forfeiture data.
Related Party Transactions	S. Related Party Transactions Parties are considered 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 related if they are subject to common control or significant influence. A transaction is considered a related party transaction when there is a transfer of resources or obligations between related parties.
Segment Reporting	T. 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. The Company’s operating segments are components of the Company’s business for which discrete financial information is available and which are reviewed regularly by the Company’s Chief Executive Officer to make decisions about resources to be allocated to the segment and assess its performance.
Leases	U. Leases Upon lease commencement, the Company recognizes a right-of-use right-of-use re-measured

Financial Instruments (Tables)

Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2020
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Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table sets forth the Company’s financial assets and liabilities measured at fair value on a recurring basis by level within the fair value hierarchy as at December 31, 2020 and December 31, 2019. As at December 31, 2020: In $000s Total Quoted prices in Significant other Significant Short-term investments Convertible debt $ 1,852 $ — $ 1,852 $ — Long-term investments Common shares held $ 28,416 $ 28,416 $ — $ — Warrants and other 1,143 — 1,143 — Convertible debt 15,525 — 15,525 — $ 46,936 $ 28,416 $ 18,520 $ — As at December 31, 2019: In $000s Total Quoted prices in Significant other Significant Short-term investments Convertible debt $ 10,801 $ — $ 10,801 $ — Long-term investments Common shares held $ 52,325 $ 52,325 $ — $ — Warrants and other 4,623 — 4,623 — Convertible debt 15,892 — 15,892 — $ 83,641 $ 52,325 $ $ —

Stream, Royalty and Other Int_2

Stream, Royalty and Other Interests (Tables)	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Carrying Amount Related to Stream, Royalty and Other Interests	As of and for the year ended December 31, 2020: COST ACCUMULATED DEPLETION In $000s Opening Net Ending Opening Depletion Depletion Impairment Ending Carrying Aurizona, Brazil $ 11,091 $ — $ 11,091 $ 985 $ 1,067 $ — $ — $ 2,052 $ 9,039 Black Fox, Canada 37,817 — 37,817 29,412 1,014 — — 30,426 7,391 Bracemac-McLeod, Canada 21,495 — 21,495 18,099 1,485 — — 19,584 1,911 Chapada, Brazil 69,554 — 69,554 13,968 2,914 — — 16,882 52,672 Diavik, Canada 53,111 23 53,134 33,273 2,085 — 7,862 43,220 9,914 Fruta del Norte, Ecuador 33,259 8 33,267 34 1,256 — — 1,290 31,977 Hod Maden, Turkey 5,818 — 5,818 — — — — — 5,818 Houndé, Burkina Faso 45,101 19 45,120 8,515 3,816 — — 12,331 32,789 Hugo North Extension and Heruga, Mongolia 35,351 1 35,352 — — — — — 35,352 Karma, Burkina Faso 26,289 — 26,289 13,248 3,843 349 — 17,440 8,849 Ming, Canada 20,070 5 20,075 11,055 445 — — 11,500 8,575 Relief Canyon, United States 26,416 25 26,441 — 2,820 87 — 2,907 23,534 Santa Elena, Mexico 23,354 — 23,354 21,610 312 10 — 21,932 1,422 Yamana silver stream, Argentina 74,252 — 74,252 15,764 10,119 — — 25,883 48,369 Other Royalties 1 234,474 3,445 237,919 155,956 1,948 — 1,015 158,919 79,000 Total 2 $ 717,452 $ 3,526 $ 720,978 $ 321,919 $ 33,124 $ 446 $ 8,877 $ 364,366 $ 356,612 1 Includes Mt. Hamilton, Prairie Creek, Gualcamayo, Emigrant Springs, Mine Waste Solutions, San Andres, Thunder Creek, Hackett River, Lobo-Marte, Agi Dagi & Kirazli, HM Claim and others. 2 Stream, Royalty and Other Interests includes non-depletable assets of $58.4 million and depletable assets of $298.2 million. As of and for the year ended December 31, 2019: COST ACCUMULATED DEPLETION In $000s Opening Net Additions Ending Opening Depletion 1 Depletion in Impairment Ending Carrying Aurizona, Brazil $ 11,033 $ 58 $ 11,091 $ 310 $ 675 $ — $ — $ 985 $ 10,106 Bachelor Lake, Canada 24,029 4 24,033 23,564 469 — — 24,033 — Black Fox, Canada 37,799 18 37,817 28,091 1,321 — — 29,412 8,405 Bracemac-McLeod, Canada 21,495 — 21,495 16,521 1,578 — — 18,099 3,396 Chapada, Brazil 69,528 26 69,554 10,602 3,366 — — 13,968 55,586 Diavik, Canada 53,111 — 53,111 23,569 7,256 — 2,448 33,273 19,838 Fruta del Norte, Ecuador — 33,259 33,259 — 34 — — 34 33,225 Hod Maden, Turkey 5,818 — 5,818 — — — — — 5,818 Houndé, Burkina Faso 45,036 65 45,101 4,478 4,037 — — 8,515 36,586 Hugo North Extension and Heruga, Mongolia 35,351 — 35,351 — — — — — 35,351 Karma, Burkina Faso 26,289 — 26,289 9,873 3,375 — — 13,248 13,041 Ming, Canada 20,070 — 20,070 9,866 1,189 — — 11,055 9,015 Relief Canyon, United States — 26,416 26,416 — — — — — 26,416 Santa Elena, Mexico 23,354 — 23,354 21,058 552 — — 21,610 1,744 Yamana silver stream, Argentina 74,236 16 74,252 6,072 9,692 — — 15,764 58,488 Other Royalties 2 209,579 862 210,441 128,518 3,193 — 212 131,923 78,518 Total 3 $ 656,728 $ 60,724 $ 717,452 $ 282,522 $ 36,737 $ — $ 2,660 $ 321,919 $ 395,533 1 Depletion during the period in the Consolidated Statements of Income (loss) of $37.8 million is comprised of depletion expense for the period of $36.7 million, and $1.1 million from depletion in ending inventory as at December 31, 2018. 2 Includes Mt. Hamilton, Prairie Creek, Gualcamayo, Emigrant Springs, Mine Waste Solutions, San Andres, Thunder Creek, Hackett River, Lobo-Marte, Agi Dagi & Kirazli, HM Claim and others. 3 Stream, Royalty and Other Interests includes non-depletable assets of $56.4 million and depletable assets of $339.1 million.

Hod Maden and Other Investmen_2

Hod Maden and Other Investments in Associates (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of associates [line items]
Summary of Investments Accounted For Using Equity Method	In $000s As at As at Hod Maden interest $ 96,666 $ 116,585 Entrée Resources Ltd. 16,240 — $ 112,906 $ 116,585
Hod Maden
Disclosure of associates [line items]
Summary of Changes in Carrying Amount of Associate	The following table summarizes the changes in the carrying amount of the Company’s Hod Maden interest: In $000s Year Ended Year Ended Beginning of Year $ 116,585 $ 127,224 Company’s share of net loss of associate (360 ) (414 ) Capital investment 3,579 3,000 Currency translation adjustments (23,138 ) (13,225 ) End of Year $ 96,666 $ 116,585
Summarized Financial Information of Associate	Summarized financial information for the Company’s investment in this In $000s Year Ended Year Ended Administration expenses $ (1,387 ) $ (1,183 ) Other (expense) income 187 (197 ) Total net loss $ (1,200 ) $ (1,380 ) Company’s share of net loss of associate $ (360 ) $ (414 ) In $000s As at As at Current Assets $ 765 $ 1,747 Non-current 318,710 387,620 Total Assets $ 319,475 $ 389,367 Current Liabilities $ 518 $ 751 Non-current — — Total Liabilities $ 518 $ 751 Net Assets 318,957 388,616 Company’s share of net assets of associate $ 95,687 $ 116,585 Adjustments for differences in accounting policies and other 979 — Carrying amount of investment in associate 96,666 116,585
Entree Resources Ltd
Disclosure of associates [line items]
Summary of Changes in Carrying Amount of Associate	The following table summarizes the changes in the carrying amount of the Company’s Entrée interest: In $000s Year Ended 1 Year Ended Beginning of Year $ — $ — Acquisition of i a 16,339 — Company’s share of net loss of associate (99 ) — End of Year $ 16,240 $ — 1 Information is for the reconstructed period November 20, 2020 to December 31, 2020.
Summarized Financial Information of Associate	Summarized financial information for the Company’s investment in this 100 In $000s As at As at Current Assets $ 7,651 $ — Non-current Assets 152,133 — Total Assets $ 159,784 $ — Current Liabilities $ 184 $ — Non-current Liabilities 84,831 — Total Liabilities $ 85,015 $ — Net Assets 74,769 — Company’s share of net assets of associate $ 16,240 $ —

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Disclosure of Detailed Information about Financial Instruments	As of and for the year ended December 31, 2020: In $000s Jan. 1, 2020 Additions Disposals Transfers Fair Value Dec. 31, 2020 Short-term investments Convertible debt instruments 1 $ 10,801 $ — $ (11,006 ) $ 556 $ 1,501 $ 1,852 Total short-term investments $ 10,801 $ — $ (11,006 ) $ 556 $ 1,501 $ 1,852 Non-current Common shares 2 $ 52,325 $ 11,456 $ (37,238 ) $ (16,339 ) $ 18,212 $ 28,416 Warrants and other 1 4,623 52 (5,732 ) — 2,200 1,143 Convertible debt instruments 1 15,892 60 — (556 ) 129 15,525 Total non-current $ 72,840 $ 11,568 $ (42,970 ) $ (16,895 ) $ 20,541 $ 45,084 Total Investments $ 83,641 $ 11,568 $ (53,976 ) $ (16,339 ) $ 22,042 $ 46,936 1 Fair value adjustment recorded within Net Income (loss) for the period. 2 Fair value adjustment recorded within Other Comprehensive Income (loss) for the period. As of and for the year ended December 31, 2019: In $000s Jan. 1, 2019 Additions Disposals Transfers Fair Value Dec. 31, 2019 Short-term investments Convertible debt instruments 1 $ 13,937 $ 725 $ (14,452) $ 8,541 $ 2,050 $ 10,801 Total short-term investments $ 13,937 $ 725 $ (14,452) $ 8,541 $ 2,050 $ 10,801 Non-current Common shares 2 $ 33,139 $ 24,834 $ (17,357) $ — $ 11,709 $ 52,325 Warrants and other 1 2,106 4 (27 ) — 2,540 4,623 Convertible debt instruments 1 10,998 9,279 (710 ) (8,541 ) 4,866 15,892 Total non-current $ 46,243 $ 34,117 $ (18,094) $ (8,541) $ 19,115 $ 72,840 Total Investments $ 60,180 $ 34,842 $ (32,546) $ — $ 21,165 $ 83,641 1 Fair value adjustment recorded within Net Income (loss) for the period. 2 Fair value adjustment recorded within Other Comprehensive Income (loss) for the period.

Share Capital and Reserves (Tab

Share Capital and Reserves (Tables)	12 Months Ended
	Dec. 31, 2020
Disclosure of terms and conditions of share-based payment arrangement [line items]
Summary of Company's Options and Weighted Average Exercise Price	A summary of the Company’s options and the changes for the year is as follows: Number of options Weighted average exercise 1 Options outstanding at December 31, 2018 9,322,641 4.58 Granted 1,427,000 8.89 Exercised (3,181,108 ) (2.99 ) Options outstanding at December 31, 2019 7,568,533 6.06 Granted 2,812,000 9.43 Exercised (1,253,430 ) (4.42 ) Options outstanding at December 31, 2020 9,127,103 7.33 1 For options exercisable in British Pounds Sterling (“GBP”), exercise price is translated to Canadian Dollars (“CAD”) using the period end exchange rate.
Summary of Share Purchase Options and Exercise Price Ranges	A summary of the Company’s share purchase options as of December 31, 2020 is as follows: Year of expiry Number outstanding Vested Exercise 1 Weighted average 1, 2 2021 699,000 699,000 4.96 4.96 2022 1,067,438 1,067,438 4.98 - 15.00 5.37 2023 3,121,665 2,078,335 5.92 5.92 2024 1,427,000 475,670 8.89 8.89 2025 2,812,000 — 9.43 — 9,127,103 4,320,443 5.96 1 For options exercisable in GBP, exercise price is translated to CAD using the period end exchange rate. 2 Weighted average exercise price of options that are exercisable.
Summary of Information of Diluted Earnings per Share	Diluted earnings per share is calculated based on the following: In $000s Year Ended Year Ended Net income for the year $ 13,817 $ 16,397 Basic weighted average number of shares 187,507,754 177,619,824 Basic earnings per share $ 0.07 $ 0.09 Effect of dilutive securities Stock options 2,732,900 2,397,114 Warrants 4,318,675 8,154,232 Restricted share rights 2,348,511 2,048,843 Diluted weighted average number of common shares 196,907,840 190,220,013 Diluted earnings per share $ 0.07 $ 0.09
Number of Stock Options and Warrants Excluded from the Computation of Diluted Earnings per Share	The following table lists the number of potentially dilutive securities excluded from the computation of diluted earnings per share because the exercise prices exceeded the average market value of the common shares of CAD10.48 during the year ended December 31, 2020 (2019 — CAD7.72). Year Ended Year Ended Stock options 217,376 131,266 Restricted share rights — 52,411
Warrants [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Summary of the Company's Other Equity Instruments and the Changes for the Year	A summary of the Company’s warrants and the changes for the year is as follows: Number of warrants Shares to be issued upon Warrants outstanding at December 31, 2018 22,965,400 22,965,400 Exercised (1,506,051 ) (1,506,051 ) Warrants outstanding at December 31, 2019 21,459,349 21,459,349 Exercised (21,091,325 ) (21,091,325 ) Expired unexercised (368,024 ) (368,024 ) Warrants — —

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Disclosure of Reconciliation of Accounting Profit Multiplied by Applicable Tax Rates to Income Tax Expense	These differences result from the following items: In $000s Year Ended Year Ended Income before income taxes $ 24,276 $ 23,008 Canadian federal and provincial income tax rates 27 % 27 % Income tax expense based on the above rates $ 6,555 $ 6,212 Increase (decrease) due to: Non-deductible $ 1,525 $ 1,409 Non-taxable or loss (433 ) (1,209 ) Withholding taxes 1,940 1,434 Change in valuation allowance and o 872 (1,235 ) Income tax expense $ 10,459 $ 6,611
Deferred Tax Assets and Liabilities, Movement in Deferred Tax Assets and Unused Tax Losses	The deferred tax assets and liabilities are shown below: In $000s As at As at Deferred Income Tax Assets Non-capital $ — $ 27,606 Share issue costs and other — 1,215 Stream inter ests — (24,518 ) Total deferred income tax assets $ — $ 4,303 Deferred Income Tax Liabilities Non-capital losse s $ 24,922 $ — Investments and other (735 ) — Stream interests (29,664 ) (196 ) Total deferred income tax liabilities $ (5,477 ) $ (196 ) Total deferred income tax liabilities $ (5,477 ) $ 4,107 The movement in net deferred income taxes is shown below: In $000s Year Ended Year Ended Balance, beginning of the year $ 4,107 $ 8,528 Recognized in net income (loss) for the year (7,595 ) (4,371 ) Recognized in equity 357 — Recognized in other comprehensive income (loss) for the year (2,346 ) (50 ) Balance, end of year $ (5,477 ) $ 4,107 The Company has deductible unused tax losses, for which a deferred tax asset has been recognized, expiring as follows: In $000s Location Amount Expiration Non-capital Canada $ 92,303 2030 - 2036

Administration Expenses (Tables

Administration Expenses (Tables)	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Schedule of Administration Expenses	The administration expenses for the Company are as follows: In $000s Year Ended Year Ended Corporate administration $ 2,128 $ 2,309 Employee benefits and salaries 2,276 2,262 Professional fees 924 785 Administration expenses before share based compensation $ 5,328 $ 5,356 Equity settled share based compensation (a non-cash 3,007 2,918 Total administration expenses $ 8,335 $ 8,274

Supplemental Cash Flow Inform_2

Supplemental Cash Flow Information (Tables)	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Summary of Supplemental Cash Flow Information	In $000s Year Ended Year Ended Change in non-cash Trade receivables and other $ (553 ) $ (2,585 ) Trade and other payables (2,169 ) (780 ) Net decrease in cash $ (2,722 ) $ (3,365 ) Significant non-cash Common shares received in consideration of a convertible debenture payment $ — $ 10,912

Other Long-Term Assets (Tables)

Other Long-Term Assets (Tables)	12 Months Ended
	Dec. 31, 2020
Trade and other non-current receivables [abstract]
Summary of other noncurrent assets explanatory	In $000s Year Ended December 31, 2020 Year Ended December 31, 2019 Loan receivable $ 5,001 $ — Right of use asset, net of amortization 2,651 3,138 Deferred financing costs 1,691 2,258 Other 1,600 374 To tal other long - $ 10,943 $ 5,770

Key Management Compensation (Ta

Key Management Compensation (Tables)	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Disclosure of Key Management Compensation	The remuneration of directors and those persons having authority and responsibility for planning, directing and controlling activities of the Company are as follows: In $000s Year Ended Year Ended Salaries and benefits $ 1,561 $ 2,541 Share based payments 4,068 3,761 Total key management compensation expense $ 5,629 $ 6,302

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Schedule of Purchase Commitments in Connection With Commodity Streams	In connection with its commodity streams, the Company has committed to purchase the following: Stream % of Life of Mine Gold 5, 6, 7, 8, 9 Per Ounce Cash Payment: 1, 2, 3, 4 Black Fox 8% $561 Chapada 4.2% 30% of copper spot price Entrée 5.62% on Hugo North Extension and 4.26% on Heruga $220 Karma 26,875 ounces over 5 years and 20% of gold spot price Ming 25% of the first 175,000 ounces of gold produced, and 12% thereafter $nil Relief Canyon 32,022 ounces over 5.5 years and 4% thereafter Varies Santa Elena 20% $464 Yamana silver stream 20% 30% of silver spot price 1 Subject to an annual inflationary adjustment except for Ming. 2 For the Relief Canyon stream, after receipt of 32,022 gold ounces (the cost of which is nil), the Company is entitled to purchase 4.0% of the gold and silver produced from the Relief Canyon m ine 3 For the Entrée Gold Stream, after approximately 8.6 4 For the Entrée silver stream, percentage of life of mine is 5.62% on Hugo North Extension and 4.26% on Heruga which the Company can purchase for the lesser of the prevailing market price and $5 per ounce of silver until 40.3 5 For the Entrée Gold and silver stream, percentage of life of mine is 5.62% on Hugo North Extension and 4.26% on Heruga if the minerals produced are contained below 560 metres in depth. 6 For the Entrée Gold and silver stream, percentage of life of mine is 8.43% on Hugo North Extension and 6.39% on Heruga if the minerals produced are contained above 560 metres in depth. 7 For the Entrée copper stream, the Company has committed to purchase an amount equal to 0.42% of the copper produced from the Hugo North Extension and Heruga deposits. If the minerals produced are contained above 560 metres in depth, then the commitment increases to 0.62% for both the Hugo North Extension and Heruga deposits. Sandstorm will make ongoing per pound cash payments equal to the lesser of $0.50 and the then prevailing market price of copper, until 9.1 billion pounds of copper have been produced from the entire joint venture property. Thereafter, the ongoing per pound payments will increase to the lesser of $1.10 and the then prevailing market price of copper. 8 For the Chapada copper stream, the Company has committed to purchase an amount equal to 4.2% of the copper produced (up to an annual maximum of 3.9 million pounds of copper) until the mine has delivered 39 million pounds of copper to Sandstorm; then 3.0% of the copper produced until, on a cumulative basis, the mine has delivered 50 million pounds of copper to Sandstorm; then 1.5% of the copper produced thereafter, for the life of the mine. 9 Under the terms of the Yamana silver stream, Sandstorm has agreed to purchase an amount of silver from Cerro Moro equal to 20% of the silver produced (up to an annual maximum of 1.2 million ounces of silver), until Yamana has delivered to Sandstorm 7.0 million ounces of silver; then 9.0% of the silver produced thereafter.

Segmented Information (Tables)

Segmented Information (Tables)	12 Months Ended
	Dec. 31, 2020
Text block1 [abstract]
Summary of Company's Reportable Operating Segments	The Company’s reportable operating segments, which are components of the Company’s business where separate financial information is available and which are evaluated on a regular basis by the Company’s Chief Executive Officer, who is the Company’s chief operating decision maker, for the purpose of assessing performance, are summarized in the tables below: For the year ended December 31, 2020: In $000s Product Sales Royalty Cost of sales Depletion Stream, royalty impairments Other Income Cash flow from Aurizona, Brazil Gold $ — $ 8,850 $ — $ 1,067 $ — $ — $ 7,783 $ 7,950 Black Fox, Canada Gold 3,693 — 1,194 1,014 — — 1,485 2,500 Bracemac-McLeod, Canada 1 Various — 2,946 — 1,485 — — 1,461 3,234 Chapada, Brazil Copper 9,904 — 3,021 2,914 — — 3,969 6,883 Diavik, Canada Diamonds — 2,716 — 2,085 7,862 392 (7,623 ) 3,075 Fruta del Norte, Ecuador Gold — 3,302 — 1,256 — — 2,046 1,408 Houndé, Burkina Faso Gold — 8,740 — 3,816 — — 4,924 6,633 Karma, Burkina Faso Gold 8,184 — 1,619 3,843 — — 2,722 6,438 Ming, Canada Gold 835 — — 445 — — 390 835 Relief Canyon, United States Gold 7,096 — — 2,820 — — 4,276 7,096 Santa Elena, Mexico Gold 9,749 — 2,552 312 — — 6,885 7,100 Yamana silver stream, Argentina Silver 19,199 — 5,660 10,119 — — 3,420 13,540 Other Royalties 2 Various — 7,811 — 1,948 1,015 — 4,848 6,718 Total Segments $ 58,660 $ 34,365 $ 14,046 $ 33,124 $ 8,877 $ 392 $ 36,586 $ 73,410 Corporate: Administration & Project evaluation expenses $ — $ — $ — $ — $ — $ — $ (13,868 ) $ (7,728 ) Foreign exchange loss — — — — — — (345 ) — Gain on revaluation of investments — — — — — — 3,830 — Finance expense, net — — — — — — (1,792 ) 94 Other — — — — — 135 (135 ) (160 ) Total Corporate $ — $ — $ — $ — $ — $ 135 $ (12,310 ) $ (7,794 ) Consolidated $ 58,660 $ 34,365 $ 14,046 $ 33,124 $ 8,877 $ 527 $ 24,276 $ 65,616 1 Royalty revenue from Bracemac-McLeod consists of $1.4 million from copper and $1.5 2 Where a stream and royalty represents less than of the Company’s sales, gross margin or aggregate asset book value and represents a royalty on gold, silver or other metal, the royalty interest has been summarized under Other Royalties. Other Royalties includes royalty revenue from Gualcamayo, Emigrant Springs, Mine Waste Solutions, San Andres, Thunder Creek, HM Claim, Triangle Zone and others. Includes royalty revenue from royalty interests located in Canada of $3.2 million, the United States of $0.6 million, Argentina of $1.1 million, Honduras of $ For the year ended December 31, 2019: In $000s Product Sales Royalty Cost of sales Depletion Stream, royalty impairments Other Income Cash flow from Aurizona, Brazil Gold $ — $ 3,357 $ — $ 675 $ — $ — $ 2,682 $ 1,757 Bachelor Lake, Canada Gold 8,532 — 3,000 469 — — 5,063 5,555 Black Fox, Canada Gold 3,858 — 1,540 1,321 — — 997 2,318 Bracemac-McLeod, Canada 1 Various — 3,256 — 1,578 — — 1,678 3,130 Chapada, Brazil Copper 11,008 — 3,311 3,366 — — 4,331 7,697 Diavik, Canada Diamonds — 5,674 — 7,256 2,448 — (4,030 ) 5,924 Houndé, Burkina Faso Gold — 6,425 — 4,037 — — 2,388 5,037 Karma, Burkina Faso Gold 8,156 — 1,634 3,775 — — 2,747 6,647 Ming, Canada Gold 3,760 — — 1,889 — — 1,871 3,760 Santa Elena, Mexico Gold 13,066 — 4,252 560 — — 8,254 8,832 Yamana silver stream, Argentina Silver 15,222 — 4,549 9,692 — — 981 10,672 Other Royalties 2 Various — 7,120 — 3,227 212 (340 ) 4,021 4,684 Total Segments $ 63,602 $ 25,832 $ 18,286 $ 37,845 $ 2,660 $ (340 ) $ 30,983 $ 66,013 Corporate: Administration & Project evaluation expenses $ — $ — $ — $ — $ — $ — $ (14,184 ) $ (8,557 ) Foreign exchange loss — — — — — — (86 ) — Gain on revaluation of investments — — — — — — 9,456 — Finance expense, net — — — — — — (2,747 ) 373 Other — — — — — 414 (414 ) (490 ) Total Corporate $ — $ — $ — $ — $ — $ 414 $ (7,975 ) $ (8,674 ) Consolidated $ 63,602 $ 25,832 $ 18,286 $ 37,845 $ 2,660 $ 74 $ 23,008 $ 57,339 1 Royalty revenue from Bracemac-McLeod consists of $1.2 million from copper and $2.1 million from zinc. 2 Where a stream and royalty inter es Thunder Creek, HM Claim, Triangle Zone and others. Includes royalty revenue from royalty interests located in Canada of $2.2 million, the United States of $ Total assets as of: In $000s December 31, 2020 December 31, 2019 Aurizona $ 11,539 $ 11,706 Black Fox 7,391 8,405 Bracemac-McLeod 2,142 3,915 Chapada 52,672 55,586 Diavik 10,564 21,238 Fruta del Norte 33,377 33,300 Hod Maden 1 102,484 122,403 Houndé 33,374 37,596 Hugo North Extension and Heruga 2 51,592 35,351 Karma 9,356 13,041 Ming 8,575 9,015 Relief Canyon 23,621 26,416 Santa Elena 1,511 1,744 Yamana silver stream 48,369 58,488 Other Royalties 3 81,149 80,281 Total Segments $ 477,716 $ 518,485 Corporate: Cash and cash equivalents 113,776 6,971 Investments 46,936 83,641 Deferred income tax assets — 4,303 Other assets 11,493 9,775 Total Corporate $ 172,205 $ 104,690 Consolidated $ 649,921 $ 623,175 1 Includes royalty interest of $5.8 million and investment in associate of $96.7 million at December 31, 2020. Includes royalty interest of $5.8 million and investment in associate of $116.6 million at December 31, 2019. 2 Includes royalty interest of $35.4 million and investment in associate of $16.2 million at December 31, 2020. Includes royalty interest of $35.4 million at December 31, 2019. 3 Where a stream and royalty interest represents less than 10% of the Company’s sales, gross margin or aggregate asset book value and represents a royalty on gold, silver or other metal, the royalty interest has been summarized under Other Royalties. Includes Mt. Hamilton, Prairie Creek, Gualcamayo, Emigrant Springs, Mine Waste Solutions, San Andres, Thunder Creek, Hackett River, Lobo-Marte, Agi Dagi & Kirazli, HM Claim, Triangle Zone and others.
Non-current Assets by Geographical Region	Non-current In $000s December 31, 2020 1 December 31, 2019 1 North America Canada $ 54,013 $ 68,083 USA 39,113 41,994 Mexico 4,598 1,835 South & Central America Argentina $ 62,039 $ 72,739 Brazil 65,075 69,057 Ecuador 31,977 33,226 French Guiana 5,160 5,160 Chile 2,460 2,460 Africa Burkina Faso $ 41,749 $ 49,688 South Africa 2,980 3,744 Other Turkey $ 106,402 $ 126,644 Mongolia 52,235 35,992 Australia 3,401 3,661 Other 4,258 3,605 Consolidated $ 475,460 $ 517,888 1 Includes Stream, royalty and other inter ests

Summary of Significant Accoun_3

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Summary Of Significant Accounting Policies [Abstract]
Impairment losses recognized on financial assets	$ 0	$ 0

Key Sources of Estimation Unc_2

Key Sources of Estimation Uncertainty and Critical Accounting Judgments - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Key Source Of Estimation Uncertainty And Critical Accounting Judgements [Abstract]
Stream, royalty and other interests		$ 356,612	$ 395,533
Stream, royalty and other interests impairments		$ 8,877	$ 2,660
Diavik Royalty [Member]
Key Source Of Estimation Uncertainty And Critical Accounting Judgements [Abstract]
Stream, royalty and other interests impairments	$ 7,900

Financial Instruments - Additio

Financial Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of nature and extent of risks arising from financial instruments [line items]
Equity	$ 638,142,000	$ 570,896,000	$ 583,397,000
Transfers between levels of fair value hierarchy	0	0
Cash and cash equivalents	113,776,000	6,971,000	$ 5,892,000
Entree Resources Limited [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Market value of investments in associates accounted for using equity method	17,800,000
Recurring fair value measurement [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Financial assets	$ 46,936,000	$ 83,641,000
Currency Risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Monetary assets and liabilities currency risk percentage change	10.00%
Other Price Risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Long term investments percentage change	10.00%
Long term investments fair value increase (decrease) potential in profit (loss)	$ 1,400,000
Long term investments fair value increase (decrease) potential in other comprehensive income (loss)	$ 2,800,000

Financial Instruments - Financi

Financial Instruments - Financial Assets and Liabilities measured at Fair Value on a Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of fair value measurement of assets [line items]
Short-term investments	$ 1,852	$ 10,801
Long-term investments	45,084	72,840
Recurring fair value measurement [member]
Disclosure of fair value measurement of assets [line items]
Financial assets	46,936	83,641
Recurring fair value measurement [member] | Convertible Debt [member]
Disclosure of fair value measurement of assets [line items]
Short-term investments	1,852	10,801
Long-term investments	15,525	15,892
Recurring fair value measurement [member] | Common Shares Held [member]
Disclosure of fair value measurement of assets [line items]
Long-term investments	28,416	52,325
Recurring fair value measurement [member] | Warrants and other [member]
Disclosure of fair value measurement of assets [line items]
Long-term investments	1,143	4,623
Recurring fair value measurement [member] | Level 1 of fair value hierarchy [member]
Disclosure of fair value measurement of assets [line items]
Financial assets	28,416	52,325
Recurring fair value measurement [member] | Level 1 of fair value hierarchy [member] | Convertible Debt [member]
Disclosure of fair value measurement of assets [line items]
Short-term investments	0	0
Long-term investments	0	0
Recurring fair value measurement [member] | Level 1 of fair value hierarchy [member] | Common Shares Held [member]
Disclosure of fair value measurement of assets [line items]
Long-term investments	28,416	52,325
Recurring fair value measurement [member] | Level 1 of fair value hierarchy [member] | Warrants and other [member]
Disclosure of fair value measurement of assets [line items]
Long-term investments	0	0
Recurring fair value measurement [member] | Level 2 of fair value hierarchy [member]
Disclosure of fair value measurement of assets [line items]
Financial assets	18,520	31,316
Recurring fair value measurement [member] | Level 2 of fair value hierarchy [member] | Convertible Debt [member]
Disclosure of fair value measurement of assets [line items]
Short-term investments	1,852	10,801
Long-term investments	15,525	15,892
Recurring fair value measurement [member] | Level 2 of fair value hierarchy [member] | Common Shares Held [member]
Disclosure of fair value measurement of assets [line items]
Long-term investments	0	0
Recurring fair value measurement [member] | Level 2 of fair value hierarchy [member] | Warrants and other [member]
Disclosure of fair value measurement of assets [line items]
Long-term investments	1,143	4,623
Recurring fair value measurement [member] | Level 3 of fair value hierarchy [member]
Disclosure of fair value measurement of assets [line items]
Financial assets	0	0
Recurring fair value measurement [member] | Level 3 of fair value hierarchy [member] | Convertible Debt [member]
Disclosure of fair value measurement of assets [line items]
Short-term investments	0	0
Long-term investments	0	0
Recurring fair value measurement [member] | Level 3 of fair value hierarchy [member] | Common Shares Held [member]
Disclosure of fair value measurement of assets [line items]
Long-term investments	0	0
Recurring fair value measurement [member] | Level 3 of fair value hierarchy [member] | Warrants and other [member]
Disclosure of fair value measurement of assets [line items]
Long-term investments	$ 0	$ 0

Stream, Royalty and Other Int_3

Stream, Royalty and Other Interests - Carrying Amount Related to Stream, Royalty and Other Agreements (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Depletion	$ 33,124	$ 37,845
Impairment of stream, royalty and other interests	8,877	2,660
Carrying Amount	356,612	395,533
Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	717,452	656,728
Net Additions (disposals)	3,526	60,724
Ending Cost	720,978	717,452
Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	321,919	282,522
Depletion	33,124	36,737
Depletion in Ending Inventory	446	0
Impairment of stream, royalty and other interests	8,877	2,660
Ending	364,366	321,919
Diavik [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Impairment of stream, royalty and other interests	7,900	2,400
Other Royalties [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount		78,518
Other Royalties [member] | Regroup with other royalties [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	79,000
Other Royalties [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	210,441	209,579
Net Additions (disposals)		862
Ending Cost		210,441
Other Royalties [member] | Cost [member] | Regroup with other royalties [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	234,474
Net Additions (disposals)	3,445
Ending Cost	237,919	234,474
Other Royalties [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	131,923	128,518
Depletion		3,193
Depletion in Ending Inventory		0
Impairment of stream, royalty and other interests		212
Ending		131,923
Other Royalties [member] | Accumulated Depreciation [member] | Regroup with other royalties [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	155,956
Depletion	1,948
Depletion in Ending Inventory	0
Impairment of stream, royalty and other interests	1,015
Ending	158,919	155,956
BRAZIL | Aurizona [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	9,039	10,106
BRAZIL | Aurizona [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	11,091	11,033
Net Additions (disposals)	0	58
Ending Cost	11,091	11,091
BRAZIL | Aurizona [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	985	310
Depletion	1,067	675
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	2,052	985
BRAZIL | Chapada Mine [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	52,672	55,586
BRAZIL | Chapada Mine [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	69,554	69,528
Net Additions (disposals)	0	26
Ending Cost	69,554	69,554
BRAZIL | Chapada Mine [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	13,968	10,602
Depletion	2,914	3,366
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	16,882	13,968
CANADA | Bachelor Lake [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount		0
CANADA | Bachelor Lake [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	24,033	24,029
Net Additions (disposals)		4
Ending Cost		24,033
CANADA | Bachelor Lake [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	24,033	23,564
Depletion		469
Depletion in Ending Inventory		0
Impairment of stream, royalty and other interests		0
Ending		24,033
CANADA | Black Fox [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	7,391	8,405
CANADA | Black Fox [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	37,817	37,799
Net Additions (disposals)	0	18
Ending Cost	37,817	37,817
CANADA | Black Fox [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	29,412	28,091
Depletion	1,014	1,321
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	30,426	29,412
CANADA | Bracemac Mcleod [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	1,911	3,396
CANADA | Bracemac Mcleod [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	21,495	21,495
Net Additions (disposals)	0	0
Ending Cost	21,495	21,495
CANADA | Bracemac Mcleod [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	18,099	16,521
Depletion	1,485	1,578
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	19,584	18,099
CANADA | Diavik [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	9,914	19,838
CANADA | Diavik [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	53,111	53,111
Net Additions (disposals)	23	0
Ending Cost	53,134	53,111
CANADA | Diavik [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	33,273	23,569
Depletion	2,085	7,256
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	7,862	2,448
Ending	43,220	33,273
CANADA | Ming [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	8,575	9,015
CANADA | Ming [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	20,070	20,070
Net Additions (disposals)	5	0
Ending Cost	20,075	20,070
CANADA | Ming [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	11,055	9,866
Depletion	445	1,189
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	11,500	11,055
ECUADOR | Fruta del Norte [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	31,977	33,225
ECUADOR | Fruta del Norte [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	33,259	0
Net Additions (disposals)	8	33,259
Ending Cost	33,267	33,259
ECUADOR | Fruta del Norte [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	34	0
Depletion	1,256	34
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	1,290	34
TURKEY | Hod Maden [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	5,818	5,818
TURKEY | Hod Maden [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	5,818	5,818
Net Additions (disposals)	0	0
Ending Cost	5,818	5,818
TURKEY | Hod Maden [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	0	0
Depletion	0	0
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	0	0
BURKINA FASO | Hounde [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	32,789	36,586
BURKINA FASO | Hounde [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	45,101	45,036
Net Additions (disposals)	19	65
Ending Cost	45,120	45,101
BURKINA FASO | Hounde [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	8,515	4,478
Depletion	3,816	4,037
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	12,331	8,515
BURKINA FASO | Karma [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	8,849	13,041
BURKINA FASO | Karma [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	26,289	26,289
Net Additions (disposals)	0	0
Ending Cost	26,289	26,289
BURKINA FASO | Karma [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	13,248	9,873
Depletion	3,843	3,375
Depletion in Ending Inventory	349	0
Impairment of stream, royalty and other interests	0	0
Ending	17,440	13,248
MONGOLIA | Hugo North Extension and Heruga [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	35,352	35,351
MONGOLIA | Hugo North Extension and Heruga [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	35,351	35,351
Net Additions (disposals)	1	0
Ending Cost	35,352	35,351
MONGOLIA | Hugo North Extension and Heruga [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	0	0
Depletion	0	0
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	0	0
UNITED STATES | Relief Canyon [Member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	23,534	26,416
UNITED STATES | Relief Canyon [Member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	26,416	0
Net Additions (disposals)	25	26,416
Ending Cost	26,441	26,416
UNITED STATES | Relief Canyon [Member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	0	0
Depletion	2,820	0
Depletion in Ending Inventory	87	0
Impairment of stream, royalty and other interests	0	0
Ending	2,907	0
MEXICO | Santa Elena [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	1,422	1,744
MEXICO | Santa Elena [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	23,354	23,354
Net Additions (disposals)	0	0
Ending Cost	23,354	23,354
MEXICO | Santa Elena [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	21,610	21,058
Depletion	312	552
Depletion in Ending Inventory	10	0
Impairment of stream, royalty and other interests	0	0
Ending	21,932	21,610
ARGENTINA | Yamana Silver Stream [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	48,369	58,488
ARGENTINA | Yamana Silver Stream [member] | Cost [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening Cost	74,252	74,236
Net Additions (disposals)	0	16
Ending Cost	74,252	74,252
ARGENTINA | Yamana Silver Stream [member] | Accumulated Depreciation [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Opening	15,764	6,072
Depletion	10,119	9,692
Depletion in Ending Inventory	0	0
Impairment of stream, royalty and other interests	0	0
Ending	$ 25,883	$ 15,764

Stream, Royalty and Other Int_4

Stream, Royalty and Other Interests - Carrying Amount Related to Stream, Royalty and Other Agreements (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Depletion	$ 33,124	$ 37,845
Carrying Amount	356,612	395,533
Property, Plant and Equipment [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	298,200	339,100
Current Period Depletion Expense [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Depletion		36,700
Current Period Depletion Expense From Prior Period Depletion in Ending Inventory [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Depletion in Ending Inventory		1,100
Exploration and evaluation assets [member]
Reconciliation of changes in property, plant and equipment and exploration and evaluation assets [line items]
Carrying Amount	$ 58,400	$ 56,400

Stream, Royalty and Other Int_5

Stream, Royalty and Other Interests - Additional Information (Detail) $ in Thousands	Apr. 03, 2019USD ($)oz	Jan. 18, 2019USD ($)	Dec. 31, 2020USD ($)$ / caratoz	Dec. 31, 2019USD ($)$ / carat
Disclosure of property plant and equipment and exploration and evaluation [line items]
Impairment of mineral, royalty and other interests			$ 8,877	$ 2,660
Decrease in diamond prices			10.00%
Impact of ten percent decrease in diamond prices on recoverable amount of Diavik			$ 1,200
Impact of one year reduction in mine life on recoverable amount of Diavik			$ 3,500
Convertible Debenture [Member] | Americas Gold and Silver Corp [Member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Financing package amounts	$ 10,000
Private placement [Member] | Americas Gold and Silver Corp [Member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Financing package amounts	$ 7,500
Fruta del Norte Project [member] | ECUADOR | Major purchases of assets [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Acquisition of mineral, royalty and other interests		$ 32,800
Relief Canyon [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Fixed delivery term	5 years 6 months
Stream and royalty buy back option | oz	4,000
Premium of annual purchase options	10.00%
Stream percentage if purchase option exercised	2.00%
Relief Canyon [member] | NSR Applies To Area Surrounding Relief Canyon [Member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Reduced NSR percentage if purchase option exercised	1.00%
Relief Canyon [member] | Contract [Member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Precious Metal Stream And NSR	$ 25,000
Relief Canyon [member] | Gold commodity type [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Threshold, percentage life of mine or relevant weight commodity change | oz	32,022		32,022
Relief Canyon [member] | Gold and Silver Commodity Type [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Percentage of life of mine gold or relevant commodity after fixed delivery period			4.00%
Relief Canyon [member] | Gold and Silver Commodity Type [member] | Stream percentage after fixed delivery period [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Percentage of life of mine gold or relevant commodity	4.00%
Stream percentage life of mine gold and silver	4.00%
Relief Canyon [member] | Major purchases of assets [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Financing package agreement aggregate amounts	$ 42,500
Diavik [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Impairment of mineral, royalty and other interests			$ 7,900	$ 2,400
Fair value assumption used for life of mine, years			3 years	3 years
Discount rate used in current measurement of fair value less costs of disposal			4.00%	4.00%
Description of key assumptions on which management has based determination of fair value less costs of disposal			Key assumptions used in the cash flow forecast were: a mine life of approximately three years, a diamond price ranging from $55–$90 per carat and a 4% discount rate.	Key assumptions used in the cash flow forecast were: a mine life of approximately 3 years, a diamond price ranging from $110–$130 per carat and a 4% discount rate.
Diavik [member] | Level 3 of fair value hierarchy [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Recoverable amount of asset or cash-generating unit			$ 11,300	$ 19,800
Bottom of Range [member] | Relief Canyon [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Cash payment percentage of spot price	30.00%
Bottom of Range [member] | Relief Canyon [member] | NSR Applies To Area Surrounding Relief Canyon [Member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Net smelter return royalty percentage	1.40%
Bottom of Range [member] | Diavik [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Fair value assumption commodity price used | $ / carat			55	110
Top of Range [member] | Relief Canyon [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Cash payment percentage of spot price	65.00%
Top of Range [member] | Relief Canyon [member] | NSR Applies To Area Surrounding Relief Canyon [Member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Net smelter return royalty percentage	2.80%
Top of Range [member] | Diavik [member]
Disclosure of property plant and equipment and exploration and evaluation [line items]
Fair value assumption commodity price used | $ / carat			90	130

Hod Maden and Other Investmen_3

Hod Maden and Other Investments in Associates - Summary of Investments Accounted For Using Equity Method (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of associates [line items]
Investments in associates accounted for using equity method	$ 112,906	$ 116,585
Hod Maden Associate [member]
Disclosure of associates [line items]
Investments in associates accounted for using equity method	96,666	116,585	$ 127,224
Entree Resources Limited [member]
Disclosure of associates [line items]
Investments in associates accounted for using equity method	$ 16,240	$ 0	$ 0

Hod Maden and Other Investmen_4

Hod Maden and Other Investments in Associates - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)shares
Hod Maden Associate [member]
Disclosure of associates [line items]
Proportion of ownership interest in associate	30.00%
Entree Resources Limited [member]
Disclosure of associates [line items]
Market value of investments in associates accounted for using equity method | $	$ 17.8
Entree Resources Limited [member] | Non Diluted Basis [member]
Disclosure of associates [line items]
Proportion of ownership interest in associate	22.00%
Entree Resources Limited [member] | Bottom of Range [member] | Fully Diluted [member]
Disclosure of associates [line items]
Proportion of ownership interest in associate	20.00%
Entree Resources Limited [member] | Shares [member]
Disclosure of associates [line items]
Number of shares owned in associates	40,376,380
Entree Resources Limited [member] | Warrants [member]
Disclosure of associates [line items]
Number of shares owned in associates	1,657,317

Hod Maden and Other Investmen_5

Hod Maden and Other Investments in Associates - Summarized Financial Information in Associate Carrying Amount Rollforward (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of associates [line items]
Beginning of Year	$ 116,585
Capital investment	3,312	$ 3,000
Currency translation adjustments	23,052	13,140
End of Year	112,906	116,585
Hod Maden Associate [member]
Disclosure of associates [line items]
Beginning of Year	116,585	127,224
Company's share of net loss of associate	(360)	(414)
Capital investment	3,579	3,000
Currency translation adjustments	(23,138)	(13,225)
End of Year	96,666	116,585
Entree Resources Limited [member]
Disclosure of associates [line items]
Beginning of Year	0	0
Acquisition of investment in associate	16,339	0
Company's share of net loss of associate	(99)	0
End of Year	$ 16,240	$ 0

Hod Maden and Other Investmen_6

Hod Maden and Other Investments in Associates - Summarized Financial Information in Associate 100% Basis and Adjustments (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Disclosure of associates [line items]
Administration expenses	[1]	$ (8,335)	$ (8,274)
Hod Maden Associate [member]
Disclosure of associates [line items]
Administration expenses		(1,387)	(1,183)
Other (expense) income		187	(197)
Total net loss		(1,200)	(1,380)
Company's share of net loss of associate		$ (360)	$ (414)
[1]	Equity settled stock-based compensation a (non-cash item) is included in administration expenses and project evaluation $5,652 $5,180

Hod Maden and Other Investmen_7

Hod Maden and Other Investments in Associates - Summarized Financial Information in Associate Balance Sheet Items (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of associates [line items]
Current Assets	$ 124,376	$ 28,144
Total assets	649,921	623,175
Total liabilities	11,779	52,279
Carrying amount of investment in associate	112,906	116,585
Hod Maden Associate [member]
Disclosure of associates [line items]
Current Assets	765	1,747
Non-current Assets	318,710	387,620
Total assets	319,475	389,367
Current Liabilities	518	751
Non-current Liabilities	0	0
Total liabilities	518	751
Net Assets	318,957	388,616
Company's share of net assets of associate	95,687	116,585
Adjustments for differences in accounting policies and other	979	0
Carrying amount of investment in associate	96,666	116,585	$ 127,224
Entree Resources Limited [member]
Disclosure of associates [line items]
Current Assets	7,651	0
Non-current Assets	152,133	0
Total assets	159,784	0
Current Liabilities	184	0
Non-current Liabilities	84,831	0
Total liabilities	85,015	0
Net Assets	74,769	0
Company's share of net assets of associate	16,240	0
Carrying amount of investment in associate	$ 16,240	$ 0	$ 0

Investments - Disclosure of Det

Investments - Disclosure of Detailed Information about Financial Instruments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of financial assets [line items]
Non-current investments, beginning	$ 72,840
Current investments, beginning	10,801
Fair Value Adjustment in Other Comprehensive Income (Loss)	18,212	$ 11,709
Fair Value Adjustment in Net Income (Loss)	3,830	9,456
Current investments, ending	1,852	10,801
Non-current investments, ending	45,084	72,840
Non-Current [member]
Disclosure of financial assets [line items]
Non-current investments, beginning	72,840	46,243
Additions	11,568	34,117
Disposals	(42,970)	(18,094)
Transfers in (out)	(16,895)	(8,541)
Fair Value Adjustment	20,541	19,115
Non-current investments, ending	45,084	72,840
Non-Current [member] | Common Shares Held [member]
Disclosure of financial assets [line items]
Non-current investments, beginning	52,325	33,139
Additions	11,456	24,834
Disposals	(37,238)	(17,357)
Transfers in (out)	(16,339)	0
Fair Value Adjustment in Other Comprehensive Income (Loss)	18,212	11,709
Non-current investments, ending	28,416	52,325
Non-Current [member] | Convertible Debt [member]
Disclosure of financial assets [line items]
Non-current investments, beginning	15,892	10,998
Additions	60	9,279
Disposals	0	(710)
Transfers in (out)	(556)	(8,541)
Fair Value Adjustment in Net Income (Loss)	129	4,866
Non-current investments, ending	15,525	15,892
Non-Current [member] | Warrants and other [member]
Disclosure of financial assets [line items]
Non-current investments, beginning	4,623	2,106
Additions	52	4
Disposals	(5,732)	(27)
Transfers in (out)	0	0
Fair Value Adjustment in Net Income (Loss)	2,200	2,540
Non-current investments, ending	1,143	4,623
Short-Term [member]
Disclosure of financial assets [line items]
Current investments, beginning	10,801	13,937
Additions	0	725
Disposals	(11,006)	(14,452)
Transfers in (out)	556	8,541
Fair Value Adjustment	1,501	2,050
Current investments, ending	1,852	10,801
Short-Term [member] | Convertible Debt [member]
Disclosure of financial assets [line items]
Current investments, beginning	10,801	13,937
Additions	0	725
Disposals	(11,006)	(14,452)
Transfers in (out)	556	8,541
Fair Value Adjustment in Net Income (Loss)	1,501	2,050
Current investments, ending	1,852	10,801
Equity Securities and Warrants and Other and Debt Securities [member]
Disclosure of financial assets [line items]
Total investments at beginning of period	83,641	60,180
Additions	11,568	34,842
Disposals	(53,976)	(32,546)
Transfers in (out)	(16,339)	0
Fair Value Adjustment	22,042	21,165
Total investments at end of period	$ 46,936	$ 83,641

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Investments with investee names [line items]
Proceeds from disposal of investments and other		$ 56,381	$ 23,327
Entree Resources Limited [member]
Investments with investee names [line items]
Fair value of investments reclassified into investment in associate		16,300
Other equity securities [member] | Non-Current [member]
Investments with investee names [line items]
Common Shares Fair Value On Disposal		$ 37,300
Equinox Gold Corp. [member]
Investments with investee names [line items]
Proceeds from disposal of investments and other	$ 10,400

Revolving Facility and Deferr_2

Revolving Facility and Deferred Financing Costs - Additional Information (Detail) - Revolving Facility [member] $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Disclosure of detailed information about borrowings [line items]
Borrowings, interest rate basis	LIBOR
Maturity of credit facility	December 20, 2023
Borrowings Maximum Leverage Ratio	4
Borrowing covenants base tangible net worth threshold	$ 136.8
Borrowings covenants positive net income percentage per quarter	50.00%
Borrowings required interest coverage ratio	3
Borrowings	$ 0
Deferred financing costs	1.7	$ 2.3
Floating Interest Rate [member]
Disclosure of detailed information about borrowings [line items]
Available credit facility	225
Additional Borrowing Credit Facility Available	75
Maximum credit facility available	$ 300
Bottom of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings standby fee percentage	0.422%
Bottom of range [member] | Floating Interest Rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis	1.875%
Top of range [member]
Disclosure of detailed information about borrowings [line items]
Borrowings standby fee percentage	0.675%
Top of range [member] | Floating Interest Rate [member]
Disclosure of detailed information about borrowings [line items]
Borrowings, adjustment to interest rate basis	3.00%

Share Capital and Reserves - Ad

Share Capital and Reserves - Additional Information (Detail) $ / shares in Units, $ in Thousands, Warrants in Millions	1 Months Ended	12 Months Ended
	Apr. 30, 2020Warrants$ / shares	Dec. 31, 2020USD ($)sharesyr$ / shares	Dec. 31, 2020USD ($)shares$ / shares	Dec. 31, 2019shares$ / shares	Dec. 31, 2019shares$ / shares	Dec. 31, 2018shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Treasury shares authorized to purchase | shares		17,200,000	17,200,000
Cancellation of treasury shares | shares		4,600,000
Maximum percentage share compensation arrangements relative to outstanding shares		8.50%
Average share price of entity			$ 10.48		$ 7.72
Common Stock Shares Eligible To Be Issued From Treasury Value | $		$ 140,000	$ 140,000
Share Issuance Cost | $		$ (966)
At The Market Program [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares issued | shares		0	0
Funds Received from Issued Shares | $		$ 0	$ 0
Stock Option Incentive Plan [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Maximum term of share options granted		5 years
Number of option issued | shares		2,812,000		1,427,000	1,427,000
Weighted average exercise price			$ 9.43		$ 8.89
Fair value of option issued | $		$ 4,000	$ 4,000
Fair value per option		$ 1.42
Weighted average share price granted			$ 9.43
Expected volatility		30.00%
Risk-free interest rate		0.20%
Expected life | yr		3
Description of option pricing model, share options granted		Black-Scholes model
Weighted average share price at time of exercise of options			$ 11.65		$ 7.75
Weighted average remaining contractual life of outstanding share options		3 years 4 months 27 days		3 years 4 months 17 days	3 years 4 months 17 days
Number of options outstanding | shares		9,127,103	9,127,103	7,568,533	7,568,533	9,322,641
Restricted Share Rights [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of option issued | shares		307,000
Fair value of option issued | $		$ 2,300	$ 2,300
Fair value per option		$ 7.39
Shares authorized for issuance share based compensation arrangement | shares		4,500,000	4,500,000
Vesting term		three year
Number of options outstanding | shares		2,645,165	2,645,165
Warrants [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of warrants, exercised	15	21,091,325		1,506,051	1,506,051
Proceeds from early warrant exercise incentive program | $		$ 50,300
Share Issuance Cost | $		$ 2,100
Weighted Average Share Price At The Time Of Exercise For Other Equity Instruments Exercised		$ 6.88		$ 6.98
Warrants [member] | Original exercise price [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price per share	$ 3.50
Warrants [member] | Updated exercise price [Member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price per share	$ 3.35

Share Capital and Reserves - Su

Share Capital and Reserves - Summary of Company's Options and Weighted Average Exercise Price (Detail) - Stock Option Incentive Plan [member]	12 Months Ended
	Dec. 31, 2020shares$ / shares	Dec. 31, 2019shares$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of options, beginning balance | shares	7,568,533	9,322,641
Number of options, granted | shares	2,812,000	1,427,000
Number of options, exercised | shares	(1,253,430)	(3,181,108)
Number of options, ending balance | shares	9,127,103	7,568,533
Weighted average exercise price, beginning balance | $ / shares	$ 6.06	$ 4.58
Weighted average exercise price, granted | $ / shares	9.43	8.89
Weighted average exercise price, exercised | $ / shares	(4.42)	(2.99)
Weighted average exercise price, ending balance | $ / shares	$ 7.33	$ 6.06

Share Capital and Reserves - _2

Share Capital and Reserves - Summary of Share Purchase Options (Detail) - Stock Option Incentive Plan [member]	12 Months Ended
	Dec. 31, 2020shares$ / shares	Dec. 31, 2019shares	Dec. 31, 2018shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of shares purchase options outstanding | shares	9,127,103	7,568,533	9,322,641
Number of shares purchase options, vested | shares	4,320,443
Weighted average exercise price per share | $ / shares	$ 5.96
Range Exercise Price 4.96 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Year of expiry	2021
Number of shares purchase options outstanding | shares	699,000
Number of shares purchase options, vested | shares	699,000
Exercise price per share | $ / shares	$ 4.96
Weighted average exercise price per share | $ / shares	$ 4.96
Range Exercise Price 4.98 - 15.00 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Year of expiry	2022
Number of shares purchase options outstanding | shares	1,067,438
Number of shares purchase options, vested | shares	1,067,438
Weighted average exercise price per share | $ / shares	$ 5.37
Range Exercise Price 4.98 - 15.00 [member] | Bottom of Range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price per share | $ / shares	4.98
Range Exercise Price 4.98 - 15.00 [member] | Top of Range [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Exercise price per share | $ / shares	$ 15
Range Exercise Price 5.92 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Year of expiry	2023
Number of shares purchase options outstanding | shares	3,121,665
Number of shares purchase options, vested | shares	2,078,335
Exercise price per share | $ / shares	$ 5.92
Weighted average exercise price per share | $ / shares	$ 5.92
Range Exercise Price 8.89 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Year of expiry	2024
Number of shares purchase options outstanding | shares	1,427,000
Number of shares purchase options, vested | shares	475,670
Exercise price per share | $ / shares	$ 8.89
Weighted average exercise price per share | $ / shares	$ 8.89
Range Exercise Price 9.43 [member]
Disclosure of terms and conditions of share-based payment arrangement [line items]
Year of expiry	2025
Number of shares purchase options outstanding | shares	2,812,000
Number of shares purchase options, vested | shares	0
Exercise price per share | $ / shares	$ 9.43
Weighted average exercise price per share | $ / shares	$ 0

Share Capital and Reserve - Sum

Share Capital and Reserve - Summary of the Company's Other Equity Instruments and the Changes for the Year (Detail) - Warrants [member] Warrants in Millions	1 Months Ended	12 Months Ended
	Apr. 30, 2020Warrants	Dec. 31, 2020shares	Dec. 31, 2019shares
Disclosure of terms and conditions of share-based payment arrangement [line items]
Number of warrants, outstanding beginning balance		21,459,349	22,965,400
Number of warrants, exercised	(15)	(21,091,325)	(1,506,051)
Number of warrants, expired unexercised		(368,024)
Number of warrants, outstanding ending balance		0	21,459,349
Shares to be issued upon exercise of the warrants, outstanding beginning balance		21,459,349	22,965,400
Shares to be issued upon exercise of the warrants, exercised		(21,091,325)	(1,506,051)
Shares to be issued upon exercise of the warrants, expired unexercised		(368,024)
Shares to be issued upon exercise of the warrants, outstanding ending balance		0	21,459,349

Share Capital and Reserve - S_2

Share Capital and Reserve - Summary of Information of Diluted Earnings per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Earnings per share [abstract]
Net income for the year	$ 13,817	$ 16,397
Basic weighted average number of shares	187,507,754	177,619,824
Basic earnings per share	$ 0.07	$ 0.09
Effect of dilutive stock options	2,732,900	2,397,114
Effect of dilutive warrants	4,318,675	8,154,232
Effect of dilutive restricted share rights	2,348,511	2,048,843
Diluted weighted average number of common shares	196,907,840	190,220,013
Diluted earnings per share	$ 0.07	$ 0.09

Share Capital and Reserve - Num

Share Capital and Reserve - Number of Stock Options and Warrants Excluded from the Computation of Diluted Earnings per Share (Detail) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Stock Option Incentive Plan [member]
Earnings per share [line items]
Equity securities excluded from the calculation of diluted earnings per share	217,376	131,266
Restricted Share Rights [member]
Earnings per share [line items]
Equity securities excluded from the calculation of diluted earnings per share	0	52,411

Income Taxes - Disclosure of Re

Income Taxes - Disclosure of Reconciliation of Accounting Profit Multiplied by Applicable Tax Rates to Income Tax Expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Major components of tax expense (income) [abstract]
Income before income taxes	$ 24,276	$ 23,008
Canadian federal and provincial income tax rates	27.00%	27.00%
Income tax expense based on the above rates	$ 6,555	$ 6,212
Non-deductible expenses and permanent differences	1,525	1,409
Non-taxable portion of capital gain or loss	(433)	(1,209)
Withholding taxes	1,940	1,434
Change in valuation allowance and other	872	(1,235)
Income tax expense	$ 10,459	$ 6,611

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities, Movement in Deferred Tax Assets and Unused Tax Losses (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax assets	$ 0	$ 4,303
Deferred tax liabilities	(5,477)	(196)
Total deferred income tax liabilities, net	(5,477)	4,107	$ 8,528
Non-capital Losses [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax assets	0	27,606
Deferred tax liabilities	24,922	0
Share Issue Costs and Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax assets	0	1,215
Stream Royalty And Other Interests [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred income tax assets	0	(24,518)
Deferred tax liabilities	(29,664)	(196)
Investment And Others [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	$ (735)	$ 0

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Major components of tax expense (income) [abstract]
Tax losses for which deferred tax assets recognized	$ 92.3	$ 102.2
Unused tax losses for which no deferred tax asset recognized	$ 13	$ 14.3

Income Taxes - Movement in Defe

Income Taxes - Movement in Deferred Tax Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of changes in deferred tax liability (asset) [abstract]
Balance, beginning of the year	$ 4,107	$ 8,528
Recognized in net income (loss) for the year	(7,595)	(4,371)
Recognized in equity	357	0
Recognized in other comprehensive income (loss) for the year	(2,346)	(50)
Balance, end of the year	$ (5,477)	$ 4,107

Income Taxes - Summary of Deduc

Income Taxes - Summary of Deductible Unused Tax Losses (Detail) - CANADA $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Non-capital loss carry-forwards	$ 92,303
Bottom of Range [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiry date non capital loss carryforwards	2030
Top of Range [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Expiry date non capital loss carryforwards	2036

Administration Expenses - Sched

Administration Expenses - Schedule of Administration Expenses (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Disclosure of general and administrative expenses [abstract]
Corporate administration		$ 2,128	$ 2,309
Employee benefits and salaries		2,276	2,262
Professional fees		924	785
Administration expenses before share based compensation		5,328	5,356
Equity settled share based compensation (a non-cash expense)		3,007	2,918
Total administration expenses	[1]	$ 8,335	$ 8,274
[1]	Equity settled stock-based compensation a (non-cash item) is included in administration expenses and project evaluation $5,652 $5,180

Supplemental Cash Flow Inform_3

Supplemental Cash Flow Information - Summary of Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Supplemental Cash Flow Information
Trade receivables and other	$ (553)	$ (2,585)
Trade and other payables	(2,169)	(780)
Net decrease in cash	(2,722)	(3,365)
Significant non-cash transactions:
Common shares received in consideration of a convertible debenture payment	$ 0	$ 10,912

Other Long-Term Assets - Summar

Other Long-Term Assets - Summary Of Other Noncurrent Assets Explanatory (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other Long Term Assets [Abstract]
Loan receivable	$ 5,001	$ 0
Right of use asset, net of amortization	2,651	3,138
Deferred financing costs	1,691	2,258
Other	1,600	374
Total other long-term assets	$ 10,943	$ 5,770

Key Management Compensation - D

Key Management Compensation - Disclosure of Key Management Compensation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of key management compensation [Abstract]
Salaries and benefits	$ 1,561	$ 2,541
Share based payments	4,068	3,761
Total key management compensation expense	$ 5,629	$ 6,302

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Purchase Commitments in Connection With Commodity Streams (Detail)	Dec. 31, 2020$ / per_Ozoz	Apr. 03, 2019oz
Gold Commodity Type [member] | Black Fox [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	8.00%
Gold Commodity Type [member] | Black Fox [member] | Lesser of $561 and Prevailing Market Price [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price | $ / per_Oz	561
Gold Commodity Type [member] | Hugo North Extension and Heruga [member] | Before 8.6 million Ounces Produced [member] | Lesser of 220 and Prevailing Market Price [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price | $ / per_Oz	220
Gold Commodity Type [member] | Karma [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price percentage of market price	20.00%
Threshold, percentage life of mine or relevant weight commodity change | oz	26,875
Gold Commodity Type [member] | Karma [member] | After 26875 Ounces Over 5 Years [Member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	1.625%
Gold Commodity Type [member] | Santa Elena [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	20.00%
Gold Commodity Type [member] | Santa Elena [member] | Lesser of 464 and prevailing market price [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price | $ / per_Oz	464
Gold Commodity Type [member] | Ming [member]
Commitments and Contingencies [Line Items]
Threshold, percentage life of mine or relevant weight commodity change | oz	175,000
Commodity per ounce purchase price | $ / per_Oz	0
Gold Commodity Type [member] | Ming [member] | First 175000 Ounces [Member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	25.00%
Gold Commodity Type [member] | Ming [member] | After 175000 Ounces [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	12.00%
Gold Commodity Type [member] | Relief Canyon [member]
Commitments and Contingencies [Line Items]
Threshold, percentage life of mine or relevant weight commodity change | oz	32,022	32,022
Copper Commodity Type [member] | Chapada Mine [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	4.20%
Commodity per ounce purchase price percentage of market price	30.00%
Copper Commodity Type [member] | Hugo North Extension and Heruga [member] | Below 560 Metres Threshold [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	0.42%
Gold and Silver Commodity Type [member] | Hugo North Extension [member] | Below 560 Metres Threshold [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	5.62%
Gold and Silver Commodity Type [member] | Heruga [member] | Below 560 Metres Threshold [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	4.26%
Gold and Silver Commodity Type [member] | Relief Canyon [member] | Stream percentage after fixed delivery period [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity		4.00%
Silver Commodity Type [member] | Yamana Silver Stream [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price percentage of market price	30.00%
Threshold, percentage life of mine or relevant weight commodity change | oz	7,000,000
Silver Commodity Type [member] | Yamana Silver Stream [member] | Up to delivery of 7 million ounces [Member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	20.00%
Silver and gold commodity types [member] | Stream percentage after fixed delivery period [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	4.00%

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Purchase Commitments in Connection With Commodity Streams (Parenthetical) (Detail) lb in Millions	Dec. 31, 2020$ / per_Oz$ / per_LBlboz	Apr. 03, 2019oz
Gold Commodity Type [member] | Relief Canyon [Member]
Commitments and Contingencies [Line Items]
Threshold, percentage life of mine or relevant weight commodity change | oz	32,022	32,022
Commodity receivable number of units | oz	32,022
Gold Commodity Type [member] | After 8.6 Million Ounces [member] | The Lesser of $500 and Prevailing Market Price [member] | Hugo North Extension and Heruga [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price | $ / per_Oz	500
Gold Commodity Type [member] | During Fixed Delivery Period [member] | Relief Canyon [Member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price | $ / per_Oz	0
Copper Commodity Type [member] | Chapada Mine [member]
Commitments and Contingencies [Line Items]
Threshold, annual maximum measurement weight commodity purchase | lb	3.9
Percentage of life of mine gold or relevant commodity	4.20%
Commodity per ounce purchase price percentage of market price	30.00%
Copper Commodity Type [member] | Hugo North Extension and Heruga [member]
Commitments and Contingencies [Line Items]
Threshold, purchase price per measurement weight change | lb	9,100
Copper Commodity Type [member] | Below 560 Metres Threshold [member] | Hugo North Extension and Heruga [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	0.42%
Copper Commodity Type [member] | Above 560 Metres Threshold [member] | Hugo North Extension and Heruga [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	0.62%
Copper Commodity Type [member] | Before 9.1 Billion Pounds Produced [member] | The Lesser of $.50 and Prevailing Market Price [member] | Hugo North Extension and Heruga [member]
Commitments and Contingencies [Line Items]
Commodity per pound purchase price | $ / per_LB	0.50
Copper Commodity Type [member] | After 9.1 Billion Pounds Produced [member] | The Lesser of $1.10 and Prevailing Market Price [member] | Hugo North Extension and Heruga [member]
Commitments and Contingencies [Line Items]
Commodity per pound purchase price | $ / per_LB	1.10
Copper Commodity Type [member] | Before Chapada Copper Stream Delivers 39 Million Pounds [Member] | Chapada Mine [member]
Commitments and Contingencies [Line Items]
Threshold, percentage life of mine or relevant weight commodity change | lb	39
Percentage of life of mine gold or relevant commodity	4.20%
Copper Commodity Type [member] | Above 39 Million Pounds And Less Than 50 Million Pounds Threshold [member] | Chapada Mine [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	3.00%
Copper Commodity Type [member] | After Yamana Copper Stream Delivers 39 Million Pounds [member] | Chapada Mine [member]
Commitments and Contingencies [Line Items]
Threshold, percentage life of mine or relevant weight commodity change | lb	50
Copper Commodity Type [member] | Above 50 Million Pounds [member] | Chapada Mine [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	1.50%
Gold and Silver Commodity Type [member] | Relief Canyon [Member] | Bottom of Range [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price percentage of market price	30.00%
Gold and Silver Commodity Type [member] | Relief Canyon [Member] | Top of Range [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price percentage of market price	65.00%
Gold and Silver Commodity Type [member] | After fixed delivery period [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	4.00%
Gold and Silver Commodity Type [member] | Below 560 Metres Threshold [member] | Hugo North Extension [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	5.62%
Gold and Silver Commodity Type [member] | Below 560 Metres Threshold [member] | Heruga [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	4.26%
Gold and Silver Commodity Type [member] | Above 560 Metres Threshold [member] | Hugo North Extension [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	8.43%
Gold and Silver Commodity Type [member] | Above 560 Metres Threshold [member] | Heruga [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	6.39%
Silver Commodity Type [member] | Yamana Silver Stream [member]
Commitments and Contingencies [Line Items]
Threshold, annual maximum measurement weight commodity purchase | oz	1,200,000
Threshold, percentage life of mine or relevant weight commodity change | oz	7,000,000
Commodity per ounce purchase price percentage of market price	30.00%
Silver Commodity Type [member] | Before 40.3 million ounces produced from property [member] | The Lesser of $5 and Prevailing Market Price [member] | Hugo North Extension and Heruga [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price | $ / per_Oz	5
Silver Commodity Type [member] | After 40.3 Million Ounces [member] | The Lesser of $10 and Prevailing Market Price [member] | Hugo North Extension and Heruga [member]
Commitments and Contingencies [Line Items]
Commodity per ounce purchase price | $ / per_Oz	10
Silver Commodity Type [member] | Below 7 Million Ounces Threshold [member] | Yamana Silver Stream [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	20.00%
Silver Commodity Type [member] | Above 7 Million Ounces Threshold [member] | Yamana Silver Stream [member]
Commitments and Contingencies [Line Items]
Percentage of life of mine gold or relevant commodity	9.00%

Commitments and Contingencies_3

Commitments and Contingencies - Additional information (Details) $ in Millions	Dec. 31, 2020USD ($)
Colossus Minerals Inc [Member] | Forecast [Member]
Commitments and Contingencies [Line Items]
Estimated Severance claims	$ 6

Segment Information - Summary o

Segment Information - Summary of Company's Reportable Operating Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disclosure of operating segments [line items]
Total revenue	$ 93,025	$ 89,434
Cost of sales, excluding depletion	14,046	18,286
Depletion	33,124	37,845
Stream, royalty and other interests impairments	8,877	2,660
Other	527	74
Income (loss) before taxes	24,276	23,008
Cash flow from operating activities	65,616	57,339
Cash and cash equivalents	113,776	6,971	$ 5,892
Deferred income tax assets	0	4,303
Assets	649,921	623,175
Operating segments [member]
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	14,046	18,286
Depletion	33,124	37,845
Stream, royalty and other interests impairments	8,877	2,660
Other	392	(340)
Income (loss) before taxes	36,586	30,983
Cash flow from operating activities	73,410	66,013
Assets	477,716	518,485
Material Reconciling Items [member]
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	0	0
Stream, royalty and other interests impairments	0	0
Other	135	414
Income (loss) before taxes	(12,310)	(7,975)
Cash flow from operating activities	(7,794)	(8,674)
Cash and cash equivalents	113,776	6,971
Investments	46,936	83,641
Deferred income tax assets	0	4,303
Other assets	11,493	9,775
Assets	172,205	104,690
Material Reconciling Items [member] | Administrative and Project Evaluation Expenses [member]
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	0	0
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	(13,868)	(14,184)
Cash flow from operating activities	(7,728)	(8,557)
Material Reconciling Items [member] | Foreign exchange gain loss [member]
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	0	0
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	(345)	(86)
Cash flow from operating activities	0	0
Material Reconciling Items [member] | Gain on revaluation of investments [member]
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	0	0
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	3,830	9,456
Cash flow from operating activities	0	0
Material Reconciling Items [member] | Finance expense net [member]
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	0	0
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	(1,792)	(2,747)
Cash flow from operating activities	94	373
Material Reconciling Items [member] | Other income statement line item [member]
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	0	0
Stream, royalty and other interests impairments	0	0
Other	135	414
Income (loss) before taxes	(135)	(414)
Cash flow from operating activities	(160)	(490)
Black Fox [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	7,391	8,405
Bracemac-McLeod [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	2,142	3,915
Chapada [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	52,672	55,586
Diavik [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	10,564	21,238
Hounde [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	33,374	37,596
Karma [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	9,356	13,041
Ming [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	8,575	9,015
Santa Elena [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	1,511	1,744
Yamana Silver Stream [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	48,369	58,488
Other Royalties [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	81,149	80,281
Aurizona Segment [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	11,539	11,706
Hod Maden [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	102,484	122,403
Hugo North Extension and Heruga Segment [member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	51,592	35,351
Fruta del Norte [Member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	33,377	33,300
Relief Canyon [Member] | Operating segments [member]
Disclosure of operating segments [line items]
Assets	23,621	26,416
Gold [member] | Bachelor Lake [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Cost of sales, excluding depletion		3,000
Depletion		469
Stream, royalty and other interests impairments		0
Other		0
Income (loss) before taxes		5,063
Cash flow from operating activities		5,555
Gold [member] | Black Fox [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	1,194	1,540
Depletion	1,014	1,321
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	1,485	997
Cash flow from operating activities	2,500	2,318
Gold [member] | Hounde [member] | Operating segments [member] | BURKINA FASO
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	3,816	4,037
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	4,924	2,388
Cash flow from operating activities	6,633	5,037
Gold [member] | Karma [member] | Operating segments [member] | BURKINA FASO
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	1,619	1,634
Depletion	3,843	3,775
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	2,722	2,747
Cash flow from operating activities	6,438	6,647
Gold [member] | Ming [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	445	1,889
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	390	1,871
Cash flow from operating activities	835	3,760
Gold [member] | Santa Elena [member] | Operating segments [member] | MEXICO
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	2,552	4,252
Depletion	312	560
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	6,885	8,254
Cash flow from operating activities	7,100	8,832
Gold [member] | Aurizona Segment [member] | Operating segments [member] | BRAZIL
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	1,067	675
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	7,783	2,682
Cash flow from operating activities	7,950	1,757
Gold [member] | Fruta del Norte [Member] | Operating segments [member] | ECUADOR
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0
Depletion	1,256
Stream, royalty and other interests impairments	0
Other	0
Income (loss) before taxes	2,046
Cash flow from operating activities	1,408
Gold [member] | Relief Canyon [Member] | Operating segments [member] | UNITED STATES
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0
Depletion	2,820
Stream, royalty and other interests impairments	0
Other	0
Income (loss) before taxes	4,276
Cash flow from operating activities	7,096
Various [member] | Bracemac-McLeod [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	1,485	1,578
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	1,461	1,678
Cash flow from operating activities	3,234	3,130
Various [member] | Other Royalties [member] | Operating segments [member]
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	1,948	3,227
Stream, royalty and other interests impairments	1,015	212
Other	0	(340)
Income (loss) before taxes	4,848	4,021
Cash flow from operating activities	6,718	4,684
Copper [member] | Chapada [member] | Operating segments [member] | BRAZIL
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	3,021	3,311
Depletion	2,914	3,366
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	3,969	4,331
Cash flow from operating activities	6,883	7,697
Diamonds [member] | Diavik [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	0	0
Depletion	2,085	7,256
Stream, royalty and other interests impairments	7,862	2,448
Other	392	0
Income (loss) before taxes	(7,623)	(4,030)
Cash flow from operating activities	3,075	5,924
Silver [member] | Yamana Silver Stream [member] | Operating segments [member] | ARGENTINA
Disclosure of operating segments [line items]
Cost of sales, excluding depletion	5,660	4,549
Depletion	10,119	9,692
Stream, royalty and other interests impairments	0	0
Other	0	0
Income (loss) before taxes	3,420	981
Cash flow from operating activities	13,540	10,672
Sales [member]
Disclosure of operating segments [line items]
Total revenue	58,660	63,602
Sales [member] | Operating segments [member]
Disclosure of operating segments [line items]
Total revenue	58,660	63,602
Sales [member] | Material Reconciling Items [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Material Reconciling Items [member] | Administrative and Project Evaluation Expenses [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Material Reconciling Items [member] | Foreign exchange gain loss [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Material Reconciling Items [member] | Gain on revaluation of investments [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Material Reconciling Items [member] | Finance expense net [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Material Reconciling Items [member] | Other income statement line item [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Gold [member] | Bachelor Lake [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue		8,532
Sales [member] | Gold [member] | Black Fox [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	3,693	3,858
Sales [member] | Gold [member] | Hounde [member] | Operating segments [member] | BURKINA FASO
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Gold [member] | Karma [member] | Operating segments [member] | BURKINA FASO
Disclosure of operating segments [line items]
Total revenue	8,184	8,156
Sales [member] | Gold [member] | Ming [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	835	3,760
Sales [member] | Gold [member] | Santa Elena [member] | Operating segments [member] | MEXICO
Disclosure of operating segments [line items]
Total revenue	9,749	13,066
Sales [member] | Gold [member] | Aurizona Segment [member] | Operating segments [member] | BRAZIL
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Gold [member] | Fruta del Norte [Member] | Operating segments [member] | ECUADOR
Disclosure of operating segments [line items]
Total revenue	0
Sales [member] | Gold [member] | Relief Canyon [Member] | Operating segments [member] | UNITED STATES
Disclosure of operating segments [line items]
Total revenue	7,096
Sales [member] | Various [member] | Bracemac-McLeod [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Various [member] | Other Royalties [member] | Operating segments [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Copper [member] | Chapada [member] | Operating segments [member] | BRAZIL
Disclosure of operating segments [line items]
Total revenue	9,904	11,008
Sales [member] | Diamonds [member] | Diavik [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	0	0
Sales [member] | Silver [member] | Yamana Silver Stream [member] | Operating segments [member] | ARGENTINA
Disclosure of operating segments [line items]
Total revenue	19,199	15,222
Royalty revenue [member]
Disclosure of operating segments [line items]
Total revenue	34,365	25,832
Royalty revenue [member] | Operating segments [member]
Disclosure of operating segments [line items]
Total revenue	34,365	25,832
Royalty revenue [member] | Material Reconciling Items [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Material Reconciling Items [member] | Administrative and Project Evaluation Expenses [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Material Reconciling Items [member] | Foreign exchange gain loss [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Material Reconciling Items [member] | Gain on revaluation of investments [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Material Reconciling Items [member] | Finance expense net [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Material Reconciling Items [member] | Other income statement line item [member]
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Other Royalties [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	3,200	2,200
Royalty revenue [member] | Other Royalties [member] | ARGENTINA
Disclosure of operating segments [line items]
Total revenue	1,100	1,100
Royalty revenue [member] | Other Royalties [member] | UNITED STATES
Disclosure of operating segments [line items]
Total revenue	600	1,100
Royalty revenue [member] | Gold [member] | Bachelor Lake [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue		0
Royalty revenue [member] | Gold [member] | Black Fox [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Gold [member] | Hounde [member] | Operating segments [member] | BURKINA FASO
Disclosure of operating segments [line items]
Total revenue	8,740	6,425
Royalty revenue [member] | Gold [member] | Karma [member] | Operating segments [member] | BURKINA FASO
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Gold [member] | Ming [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Gold [member] | Santa Elena [member] | Operating segments [member] | MEXICO
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Gold [member] | Other Royalties [member]
Disclosure of operating segments [line items]
Total revenue	7,300	6,300
Royalty revenue [member] | Gold [member] | Aurizona Segment [member] | Operating segments [member] | BRAZIL
Disclosure of operating segments [line items]
Total revenue	8,850	3,357
Royalty revenue [member] | Gold [member] | Fruta del Norte [Member] | Operating segments [member] | ECUADOR
Disclosure of operating segments [line items]
Total revenue	3,302
Royalty revenue [member] | Gold [member] | Relief Canyon [Member] | Operating segments [member] | UNITED STATES
Disclosure of operating segments [line items]
Total revenue	0
Royalty revenue [member] | Various [member] | Bracemac-McLeod [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	2,946	3,256
Royalty revenue [member] | Various [member] | Other Royalties [member] | Operating segments [member]
Disclosure of operating segments [line items]
Total revenue	7,811	7,120
Royalty revenue [member] | Copper [member] | Bracemac-McLeod [member]
Disclosure of operating segments [line items]
Total revenue	1,400	1,200
Royalty revenue [member] | Copper [member] | Chapada [member] | Operating segments [member] | BRAZIL
Disclosure of operating segments [line items]
Total revenue	0	0
Royalty revenue [member] | Diamonds [member] | Diavik [member] | Operating segments [member] | CANADA
Disclosure of operating segments [line items]
Total revenue	2,716	5,674
Royalty revenue [member] | Silver [member] | Yamana Silver Stream [member] | Operating segments [member] | ARGENTINA
Disclosure of operating segments [line items]
Total revenue	$ 0	$ 0

Segment Information - Summary_2

Segment Information - Summary of Company's Reportable Operating Segments (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Disclosure of operating segments [line items]
Total revenue	$ 93,025	$ 89,434
Stream, royalty and other interests	356,612	395,533
Hod Maden and other investments in associates	112,906	116,585
Other Royalties [member]
Disclosure of operating segments [line items]
Stream, royalty and other interests	35,400	35,400
Hod Maden and other investments in associates	16,200
Hod Maden [member]
Disclosure of operating segments [line items]
Stream, royalty and other interests	5,800	5,800
Hod Maden and other investments in associates	$ 96,700	$ 116,600
Top of Range [member] | Other Royalties [member]
Disclosure of operating segments [line items]
Percentage of companys sales gross margin or aggregate asset book value	10.00%	10.00%
Royalty revenue [member]
Disclosure of operating segments [line items]
Total revenue	$ 34,365	$ 25,832
Royalty revenue [member] | Bracemac-McLeod [member] | Copper [member]
Disclosure of operating segments [line items]
Total revenue	1,400	1,200
Royalty revenue [member] | Bracemac-McLeod [member] | Zinc product [member]
Disclosure of operating segments [line items]
Total revenue	1,500	2,100
Royalty revenue [member] | Other Royalties [member] | Gold [member]
Disclosure of operating segments [line items]
Total revenue	7,300	6,300
Royalty revenue [member] | Other Royalties [member] | Other Base Metal Product [member]
Disclosure of operating segments [line items]
Total revenue	500	800
CANADA | Royalty revenue [member] | Other Royalties [member]
Disclosure of operating segments [line items]
Total revenue	3,200	2,200
ARGENTINA | Royalty revenue [member] | Other Royalties [member]
Disclosure of operating segments [line items]
Total revenue	1,100	1,100
UNITED STATES | Royalty revenue [member] | Other Royalties [member]
Disclosure of operating segments [line items]
Total revenue	600	1,100
HONDURAS | Royalty revenue [member] | Other Royalties [member]
Disclosure of operating segments [line items]
Total revenue	1,000	1,000
Other Geographical Area [member] | Royalty revenue [member] | Other Royalties [member]
Disclosure of operating segments [line items]
Total revenue	$ 1,900	$ 1,700

Segment Information - Non-curre

Segment Information - Non-current Assets by Geographical Region (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Disclosure of operating segments [line items]
Noncurrent assets	$ 475,460	$ 517,888
CANADA
Disclosure of operating segments [line items]
Noncurrent assets	54,013	68,083
UNITED STATES
Disclosure of operating segments [line items]
Noncurrent assets	39,113	41,994
MEXICO
Disclosure of operating segments [line items]
Noncurrent assets	4,598	1,835
ARGENTINA
Disclosure of operating segments [line items]
Noncurrent assets	62,039	72,739
BRAZIL
Disclosure of operating segments [line items]
Noncurrent assets	65,075	69,057
ECUADOR
Disclosure of operating segments [line items]
Noncurrent assets	31,977	33,226
FRENCH GUIANA
Disclosure of operating segments [line items]
Noncurrent assets	5,160	5,160
CHILE
Disclosure of operating segments [line items]
Noncurrent assets	2,460	2,460
BURKINA FASO
Disclosure of operating segments [line items]
Noncurrent assets	41,749	49,688
SOUTH AFRICA
Disclosure of operating segments [line items]
Noncurrent assets	2,980	3,744
TURKEY
Disclosure of operating segments [line items]
Noncurrent assets	106,402	126,644
MONGOLIA
Disclosure of operating segments [line items]
Noncurrent assets	52,235	35,992
AUSTRALIA
Disclosure of operating segments [line items]
Noncurrent assets	3,401	3,661
OTHER
Disclosure of operating segments [line items]
Noncurrent assets	$ 4,258	$ 3,605