Gold Resource (GORO) 10-Q 29 Apr 21 2021 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 27, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-34857
Entity Registrant Name	Gold Resource Corporation
Entity Incorporation, State or Country Code	CO
Entity Tax Identification Number	84-1473173
Entity Address, Address Line One	2000 South Colorado Blvd,
Entity Address, Address Line Two	Tower One,
Entity Address, Address Line Three	Suite 10200,
Entity Address, City or Town	Denver,
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80222
City Area Code	303
Local Phone Number	320-7708
Title of 12(b) Security	Common Stock
Trading Symbol	GORO
Security Exchange Name	NYSEAMER
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		74,439,205
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001160791
Current Fiscal Year End Date	--12-31

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 27,230	$ 25,405
Gold and silver rounds/bullion	593	671
Accounts receivable, net	3,533	4,226
Inventories, net	11,584	9,995
Prepaid expenses and other current assets	1,552	2,576
Total current assets	44,492	42,873
Property, plant and mine development, net	62,965	62,511
Deferred tax assets, net	347	309
Other non-current assets	44	41
Total assets	107,848	105,734
Current liabilities:
Accounts payable	7,725	8,782
Income taxes payable, net	1,368	73
Mining royalty taxes payable, net	853	955
Accrued expenses and other current liabilities	2,087	2,275
Total current liabilities	12,033	12,085
Reclamation and remediation liabilities	3,029	3,098
Other non-current liabilities	364	13
Total liabilities	15,426	15,196
Shareholders' equity:
Common stock - $0.001 par value, 100,000,000 shares authorized: 74,439,206 and 74,376,958 shares outstanding at March 31, 2021 and December 31, 2020, respectively	75	75
Additional paid-in capital	84,966	84,865
Retained earnings	14,436	12,653
Treasury stock at cost, 336,398 shares	(5,884)	(5,884)
Accumulated other comprehensive loss	(1,171)	(1,171)
Total shareholders' equity	92,422	90,538
Total liabilities and shareholders' equity	$ 107,848	$ 105,734

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
CONDENSED CONSOLIDATED BALANCE SHEETS
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares outstanding	74,439,206	74,376,958
Treasury stock, shares	336,398	336,398

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Sales, net	$ 27,268	$ 22,149
Depreciation and amortization	3,399	6,013
Reclamation and remediation	51	49
Total mine cost of sales	18,693	22,021
Mine gross profit	8,575	128
Costs and expenses:
General and administrative expenses	1,581	1,805
Restructuring expenses	496
Stock-based compensation	484	470
Other (income) expense, net	(314)	1,465
Total costs and expenses	3,454	4,718
Income (loss) before income taxes	5,121	(4,590)
Provision for income taxes	2,594	(1,372)
Net income (loss) from continuing operations	2,527	(3,218)
Net income (loss) from discontinued operations, net of income taxes		97
Net income (loss)	$ 2,527	$ (3,121)
Net income per common share:
Basic and diluted net income (loss) per common share from continuing operations	$ 0.03	$ (0.05)
Weighted average shares outstanding:
Basic	74,405,031	66,022,202
Diluted	74,761,882	66,022,202
Production costs
Total mine cost of sales	$ 15,243	$ 15,959
Exploration expenses
Costs and expenses:
Total costs and expenses	$ 1,207	$ 978

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Shares	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Loss	Total
Balance at Dec. 31, 2019		$ 148,171	$ 16,876	$ (5,884)	$ (1,171)	$ 158,058
Balance (in shares) at Dec. 31, 2019	66,027,925
Balance at Dec. 31, 2019	$ 66
Stock-based compensation		470				$ 470
Net stock options exercised (in shares)						0
Dividends declared			(665)			$ (665)
Issuance of stock, net of issuance costs	$ 4	10,346				10,350
Issuance of stock, net of issuance costs (in shares)	3,850,000
Net income loss			(3,121)			(3,121)
Balance at Mar. 31, 2020		158,987	13,090	(5,884)	(1,171)	165,092
Balance (in shares) at Mar. 31, 2020	69,877,925
Balance at Mar. 31, 2020	$ 70
Balance at Dec. 31, 2020		84,865	12,653	(5,884)	(1,171)	90,538
Balance (in shares) at Dec. 31, 2020	74,713,356
Balance at Dec. 31, 2020	$ 75					75
Stock-based compensation		141				141
Net stock options exercised		165				$ 165
Net stock options exercised (in shares)	125,000					125,000
Common stock issued for vested restricted stock units (in shares)	2,614
Dividends declared			(744)			$ (744)
Surrender of stock for taxes due on vesting		(205)				(205)
Surrender of stock for taxes due on vesting (in shares)	(65,366)
Net income loss			2,527			2,527
Balance at Mar. 31, 2021		$ 84,966	$ 14,436	$ (5,884)	$ (1,171)	92,422
Balance (in shares) at Mar. 31, 2021	74,775,604
Balance at Mar. 31, 2021	$ 75					$ 75

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ 2,527	$ (3,121)
Net income from discontinuing operations		97
Net income (loss) from continuing operations	2,527	(3,218)
Adjustments to reconcile net income to net cash from operating activities:
Deferred income taxes	43	(3,885)
Depreciation and amortization	3,437	6,113
Stock-based compensation	484	470
Other operating adjustments	340	1,792
Changes in operating assets and liabilities:
Accounts receivable	693	4,488
Inventories	(1,063)	(1,709)
Prepaid expenses and other current assets	592	92
Other non-current assets	(4)	(10)
Accounts payable and other accrued liabilities	(1,141)	228
Mining royalty and income taxes payable, net	923	1,844
Net cash provided by operating activities from continuing operations	6,831	6,205
Cash flows from investing activities:
Capital expenditures	(4,320)	(3,482)
Proceeds from the sale of gold and silver bullion/rounds	3	1
Net cash used in investing activities from continuing operations	(4,317)	(3,481)
Cash flows from financing activities:
Proceeds from the exercise of stock options	165
Proceeds from issuance of stock		10,349
Dividends paid	(744)	(657)
Cash related to the Spin-off		292
Net cash (used in) provided by financing activities from continuing operations	(579)	9,984
Effect of exchange rate changes on cash and cash equivalents from continuing operations	(110)	(127)
Cash flows from discontinued operations:
Net cash used in operating activities		(1,229)
Net cash used in investing activities		(3,447)
Net increase in cash and cash equivalents	1,825	7,905
Cash and cash equivalents at beginning of period	25,405	10,210
Cash and cash equivalents at end of period	$ 27,230	$ 18,115

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Supplemental Cash Flow Information Continuing Operations
Interest expense paid		$ 18
Income and mining taxes paid	$ 1,328	3,743
Non-cash investing activities:
Change in capital expenditures in accounts payable	(259)	624
Change in estimate for asset retirement costs	$ 7	$ 443

Basis of Preparation of Financi

Basis of Preparation of Financial Statements	3 Months Ended
	Mar. 31, 2021
Basis of Preparation of Financial Statements
Basis of Preparation of Financial Statements	1. Basis of Preparation of Financial Statements ​ The interim Condensed Consolidated Financial Statements (“interim financial statements”) of Gold Resource Corporation and its subsidiaries (collectively, the “Company”) are unaudited and have been prepared in accordance with the rules of the Securities and Exchange Commission for interim statements. Certain information and footnote disclosures required by United States Generally Accepted Accounting Principles (“U.S. GAAP”) have been condensed or omitted as permitted by such rules, although the Company believes that the disclosures included are adequate to make the information presented not misleading. In the opinion of management, all adjustments (including normal recurring adjustments) and disclosures necessary for a fair presentation of these interim financial statements have been included. The results reported in these interim financial statements are not necessarily indicative of the results that may be reported for the entire year. These interim financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2020 included in the Company’s annual report on Form 10-K. The year-end balance sheet data was derived from the audited financial statements. Unless otherwise noted, there have been no material changes to the footnotes from those accompanying the audited consolidated financial statements contained in the Company’s annual report on Form 10-K. ​ Certain items in the prior period’s Condensed Consolidated Financial Statements have been reclassified to conform to the current presentation. These reclassifications were mostly related to Discontinued Operations and separate presentation of stock-based compensation. ​

Recently Adopted Accounting Sta

Recently Adopted Accounting Standards	3 Months Ended
	Mar. 31, 2021
Recently Adopted Accounting Standards
Recently Adopted Accounting Standards	2. Recently Adopted Accounting Standards ​ Recent accounting pronouncements issued have been evaluated and do not presently impact our financial statements and supplemental data. ​

Discontinued Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2021
Discontinued Operations
Discontinued Operations	3. Discontinued Operations On December 31, 2020, the Company completed its spin-off of its wholly-owned subsidiary Fortitude Gold Corporation and its subsidiaries (“FGC” or “Nevada Mining Unit”). FGC is presented as discontinued operations in the Company’s Condensed Consolidated Financial Statements. Results of discontinued operations for the three months ended March 31, 2020 are as follows ( in thousands ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2020 ​ ​ (Unaudited) ​ Sales, net $ 5,857 ​ Mine cost of sales ​ 6,300 ​ Mine gross loss ​ (443) ​ Exploration expenses ​ 177 ​ Other expense, net ​ 48 ​ Loss before income taxes ​ (668) ​ Income tax benefit ​ (765) ​ Net income from discontinued operations $ 97 ​ Selected Statements of Cash Flows presenting depreciation and amortization, capital expenditures, sale proceeds and significant operating noncash items of FGC were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ ​ 2020 ​ ​ ​ ​ (Unaudited) ​ Cash flows from discontinued operating activities: ​ ​ ​ ​ ​ Net income ​ ​ $ 97 ​ Adjustments to reconcile net income to net cash from operating activities: ​ ​ ​ ​ ​ Deferred income taxes ​ ​ ​ (765) ​ Depreciation and amortization ​ ​ ​ 1,422 ​ Other operating adjustments ​ ​ ​ (11) ​ Changes in operating assets and liabilities: ​ ​ ​ ​ ​ Accounts receivable ​ ​ ​ (169) ​ Inventories ​ ​ ​ (1,786) ​ Prepaid expenses and other current assets ​ ​ ​ 82 ​ Other non-current assets ​ ​ ​ 931 ​ Accounts payable and other accrued liabilities ​ ​ ​ (1,030) ​ Net cash used in discontinued operating activities ​ ​ ​ (1,229) ​ ​ ​ ​ ​ ​ ​ Cash flows from discontinued investing activities: ​ ​ ​ ​ ​ Capital expenditures ​ ​ ​ (3,447) ​ Net cash used in discontinued investing activities ​ ​ ​ (3,447) ​ ​ ​ ​ ​ ​ ​ Cash flows from discontinued financing activities: ​ ​ ​ ​ ​ Cash transferred from Gold Resource Corporation prior to Spin-off ​ ​ ​ 4,508 ​ Repayment of loans payable ​ ​ ​ (216) ​ Repayment of finance leases ​ ​ ​ (107) ​ Net cash provided by discontinued financing activities ​ ​ ​ 4,185 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental Cash Flow Information Discontinued Operations ​ ​ ​ ​ ​ Non-cash investing activities: ​ ​ ​ ​ ​ Change in capital expenditures in accounts payable ​ ​ $ 516 ​ Change in estimate for asset retirement costs ​ ​ $ 435 ​ ​ Effective December 31, 2020, in connection with the Spin-Off, the Company entered into an agreement with FGC that govern the relationship of the parties following the Spin-Off. The Management Services Agreement provides that the Company and its subsidiaries will provide services to FGC to assist in the transition of FGC as a separate company including, managerial and technical supervision, advisory and consultation with respect to mining operations, exploration, environmental, safety and sustainability matters. The Company will provide certain administrative services related to information technology, accounting and financial advisory services, legal and compliance support and investor relation and shareholder communication services. The agreed upon charges for services rendered are based on market rates that align with the rates that an unaffiliated service provider would charge for similar services. The Management Services Agreement will terminate on December 31, 2021, unless cancelled upon 30 days written notice by one party to the other. Due to the successful development, by FGC, of their own corporate, administrative and technical capabilities, the Company decided to terminate the Agreement and delivered a notice of termination on April 14, 2021 and therefore termination of the Agreement will be effective on May 21, 2021.

Revenue

Revenue	3 Months Ended
	Mar. 31, 2021
Revenue
Revenue	4. Revenue ​ The Company derives its revenue from the sale of doré and concentrates. The following table presents the Company’s net sales for each period presented, disaggregated by source: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Doré sales, net ​ ​ ​ ​ ​ ​ ​ Gold ​ $ 2,487 ​ $ 1,769 ​ Silver ​ ​ 377 ​ ​ 676 ​ Less: Refining charges ​ ​ (71) ​ ​ (35) ​ Total doré sales, net ​ ​ 2,793 ​ ​ 2,410 ​ Concentrate sales ​ ​ ​ ​ ​ ​ ​ Gold ​ ​ 6,524 ​ ​ 6,216 ​ Silver ​ ​ 6,313 ​ ​ 5,215 ​ Copper ​ ​ 3,386 ​ ​ 2,361 ​ Lead ​ ​ 2,405 ​ ​ 3,479 ​ Zinc ​ ​ 8,766 ​ ​ 9,040 ​ Less: Treatment and refining charges ​ ​ (2,884) ​ ​ (5,834) ​ Total concentrate sales, net ​ ​ 24,510 ​ ​ 20,477 ​ Realized/unrealized embedded derivative, net ​ ​ (35) ​ ​ (738) ​ Total sales, net ​ $ 27,268 ​ $ 22,149 ​ ​

Gold and Silver Rounds_Bullion

Gold and Silver Rounds/Bullion	3 Months Ended
	Mar. 31, 2021
Gold and Silver Rounds/Bullion
Gold and Silver Rounds/Bullion	5 . Gold and Silver Rounds/Bullion ​ The Company sponsors a dividend exchange program under which shareholders may exchange their cash dividends for minted gold and silver rounds. No purchase or sales of gold and silver occurred during the current period. ​ At March 31, 2021 and December 31, 2020, the Company’s holdings of rounds/bullion, using quoted market prices, consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ Ounces ​ Per Ounce ​ Amount ​ Ounces ​ Per Ounce ​ Amount ​ ​ ​ ​ ​ ​ ​ (in thousands) ​ ​ ​ ​ ​ ​ (in thousands) Gold ​ 184 ​ $ 1,691 ​ $ 311 ​ 189 ​ $ 1,888 ​ $ 357 Silver ​ 11,750 ​ $ 24.00 ​ ​ 282 ​ 11,842 ​ $ 26.49 ​ ​ 314 Total holdings ​ ​ ​ ​ ​ ​ $ 593 ​ ​ ​ ​ ​ ​ $ 671 ​

Inventories, net

Inventories, net	3 Months Ended
	Mar. 31, 2021
Inventories, net
Inventories, net	​ 6. Inventories, net ​ At March 31, 2021 and December 31, 2020, inventories, net consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Stockpiles - underground mine ​ $ 461 ​ $ 648 Stockpiles - open pit mine ​ ​ 17 ​ ​ 41 Concentrates ​ ​ 2,834 ​ ​ 1,919 Doré, net (1) ​ ​ 1,107 ​ ​ 459 Subtotal - product inventories ​ ​ 4,419 ​ ​ 3,067 Materials and supplies (2) ​ ​ 7,165 ​ ​ 6,928 Total ​ $ 11,584 ​ $ 9,995 (1) Net of reserve of nil and $368 at March 31, 2021 and December 31, 2020, respectively. (2) Net of reserve for obsolescence of $209 as of March 31, 2021 and December 31, 2020.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Taxes
Income Taxes	7. Income Taxes ​ The Company recorded an income tax expense of $2.6 million for the three months ended March 31, 2021. In accordance with applicable accounting rules, the interim provision for taxes is calculated using the consolidated effective tax rate. The consolidated effective tax rate is a function of the combined effective tax rates for the jurisdictions in which the Company operates. Variations in the relative proportions of jurisdictional income could result in fluctuations to the Company’s consolidated effective tax rate. At the federal level, the Company’s income in the U.S. is taxed at 21% and a 5% withholding tax applies to dividends received from Mexico. The U.S. tax results are combined with the Company’s income in Mexico, taxed at 37.5% (30% income tax and 7.5% mining tax), and in Canada at 26.5%, which results in a consolidated effective tax rate above statutory U.S. Federal rates. Both U.S. and Canada jurisdictions do not currently generate taxable income therefore have no impact on our consolidated effective tax rate. ​ Mexico Mining Taxation ​ Mining entities in Mexico are subject to two mining duties, in addition to the 30% Mexico corporate income tax: a “special” mining duty of 7.5% of taxable income as defined under Mexican tax law (also referred to as “mining royalty tax”) on extraction activities performed by concession holders. The mining royalty tax is generally applicable to earnings before income tax, depreciation, depletion, amortization, and interest. In calculating the mining royalty tax, there are no deductions related to depreciable costs from operational fixed assets. Both duties are tax deductible for income tax purposes. As a result, our effective tax rate applicable to the Company’s Mexican operations is substantially higher than the Mexico statutory rate. In addition, in Q1 2021 Mexico Tax Authorities introduced new tax regulation wherein exploration expenses that were previously 100% deductible in the year incurred are now being deducted at a rate of 10% per year for 10 years, same as for Income Tax purposes. ​ The Company periodically transfers funds from its Mexican wholly-owned subsidiary to the U.S. in the form of dividends. Mexico requires a 10% withholding tax on dividends to foreign parent companies unless otherwise provided per a tax treaty. According to the existing U.S. – Mexico tax treaty, the dividend withholding tax between these countries is limited to 5%, if certain requirements are met. Based on the Company’s review of these requirements, it estimates it will pay a 5% withholding tax on dividends received from Mexico in 2021. The impact of the planned annual dividends for 2021 is reflected in the estimated annual effective tax rate. ​ As of March 31, 2021, the Company believes that it has no liability for uncertain tax positions. ​ The U.S. Treasury Department issued final regulations in July 2020 concerning global intangible low-taxed income, commonly referred to as GILTI tax, and introduced by the Tax Act of 2017. The GILTI provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. The final tax regulations allow income to be excluded from GILTI tax that is subject to an effective tax rate higher than 90% of the U.S. tax rate (18.9%). The Company completed its assessment of the new legislation during the three months ended March 31, 2021 and determined that due to this high tax exception, that GILTI tax was not incurred in Q1 2021. ​

Prepaid Expenses and Other Curr

Prepaid Expenses and Other Current Assets	3 Months Ended
	Mar. 31, 2021
Prepaid Expenses And Other Current Assets
Prepaid Expenses and Other Current Assets	8. Prepaid Expenses and Other Current Assets ​ At March 31, 2021 and December 31, 2020, prepaid expenses and other current assets consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Advances to suppliers ​ $ 365 ​ $ 374 Prepaid insurance ​ ​ 342 ​ ​ 709 IVA taxes receivable, net ​ ​ 318 ​ ​ 846 Other current assets ​ ​ 527 ​ ​ 647 Total ​ $ 1,552 ​ $ 2,576 ​

Property, Plant and Mine Develo

Property, Plant and Mine Development, net	3 Months Ended
	Mar. 31, 2021
Property, Plant and Mine Development, net
Property, Plant and Mine Development, net	9. Property, Plant and Mine Development, net ​ At March 31, 2021 and December 31, 2020, property, plant and mine development, net consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Asset retirement costs ​ $ 1,071 ​ $ 1,064 Construction-in-progress (1) ​ ​ 9,549 ​ ​ 7,158 Furniture and office equipment ​ ​ 1,877 ​ ​ 1,839 Land ​ ​ 230 ​ ​ 230 Light vehicles and other mobile equipment ​ ​ 2,228 ​ ​ 2,192 Machinery and equipment ​ ​ 31,273 ​ ​ 31,227 Mill facilities and infrastructure ​ ​ 24,407 ​ ​ 24,407 Mine Development ​ ​ 85,623 ​ ​ 83,859 Software and licenses ​ ​ 1,619 ​ ​ 1,619 Subtotal (2) ​ ​ 157,877 ​ ​ 153,595 Accumulated depreciation and amortization ​ ​ (94,912) ​ ​ (91,084) Total ​ $ 62,965 ​ $ 62,511 (1) Includes accrued capital expenditures of $0.8 million and $1.0 million at March 31, 2021 and December 31, 2020, respectively. ​ The Company recorded depreciation and amortization expense of $3.4 and $6.1 million and for the three months ended March 31, 2021 and 2020, respectively. Depreciation is lower for the three months ending March 31, 2021 due to lower silver and base metal production.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	3 Months Ended
	Mar. 31, 2021
Accrued Expenses and Other Current Liabilities
Accrued Expenses and Other Current Liabilities	10. Accrued Expenses and Other Current Liabilities ​ At March 31, 2021 and December 31, 2020, accrued expenses and other current liabilities consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Accrued royalty payments ​ ​ 1,637 ​ ​ 1,796 Dividends payable ​ ​ 248 ​ ​ 247 Other payables ​ ​ 202 ​ ​ 232 Total ​ $ 2,087 ​ $ 2,275 ​

Reclamation and Remediation

Reclamation and Remediation	3 Months Ended
	Mar. 31, 2021
Reclamation and Remediation
Reclamation and Remediation	11. Reclamation and Remediation ​ The following table presents the changes in reclamation and remediation obligations for the three months ended March 31, 2021 and year ended December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Reclamation liabilities – balance at beginning of period ​ $ 1,890 ​ $ 2,003 Foreign currency exchange gain ​ ​ (61) ​ ​ (113) Reclamation liabilities – balance at end of period ​ ​ 1,829 ​ ​ 1,890 ​ ​ ​ ​ ​ ​ ​ Asset retirement obligation – balance at beginning of period ​ ​ 1,208 ​ ​ 1,105 Changes in estimate ​ ​ 7 ​ ​ 82 Accretion ​ ​ 24 ​ ​ 79 Foreign currency exchange gain ​ ​ (39) ​ ​ (58) Asset retirement obligation – balance at end of period ​ ​ 1,200 ​ ​ 1,208 Total period end balance ​ $ 3,029 ​ $ 3,098 ​ The Company’s undiscounted reclamation liabilities of $1.8 million as of March 31, 2021 and $1.9 million as of December 31, 2020, respectively, are related to the Aguila project in Mexico. These represent reclamation liabilities that were expensed through 2013 before proven and probable reserves were established and the Company was considered to be a development stage entity; therefore, most of the costs, including asset retirement costs, were not allowed to be capitalized as part of our Property, Plant & Mine Development. ​ The Company’s asset retirement obligations reflect the additions to the asset for reclamation and remediation costs in Property, Plant & Mine Development, post 2013 development stage status, which are discounted using a credit adjusted risk-free rate of 8%. As of March 31, 2021, and December 31, 2020, the Company’s asset retirement obligation related to the Don David Gold Mine in Mexico was $1.2 million.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies
Commitments and Contingencies	12. Commitments and Contingencies ​ Commitments ​ As of March 31, 2021, the Company has equipment purchase commitments of approximately $0.7 million. ​ Other Contingencies ​ The Company has certain other contingencies resulting from litigation, claims, and other commitments that are subject to a variety of environmental and safety laws and regulations incident to the ordinary course of business. The Company currently has no basis to conclude that any or all of such contingencies will materially affect its financial position, results of operations or cash flows. However, in the future, there may be changes to these contingencies, or additional contingencies may occur, any of which might result in an accrual or a change in current accruals recorded by the Company, and there can be no assurance that their ultimate disposition will not have a material adverse effect on the Company’s financial position, results of operations or cash flows. ​

Embedded Derivatives

Embedded Derivatives	3 Months Ended
	Mar. 31, 2021
Embedded Derivatives
Embedded Derivatives	13. Embedded Derivatives ​ Concentrate sales contracts contain embedded derivatives due to the provisional pricing terms for unsettled shipments. At the end of each reporting period, the Company records an adjustment to accounts receivable and revenue to reflect the mark-to-market adjustments for outstanding provisional invoices based on forward metal prices. Please see Note 18 ​ The following table summarizes the Company’s unsettled sales contracts as of March 31, 2021 with the quantities of metals under contract subject to final pricing occurring through April 2021: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gold ​ Silver ​ Copper ​ Lead ​ Zinc ​ ​ (ounces) ​ (ounces) ​ (tonnes) ​ (tonnes) ​ (tonnes) Under contract ​ ​ 4,531 ​ ​ 302,534 ​ ​ 534 ​ ​ 1,398 ​ ​ 4,842 Average forward price (per ounce or tonne) ​ $ 1,806 ​ $ 26.13 ​ $ 8,386 ​ $ 2,004 ​ $ 2,759 ​

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2021
Stock-Based Compensation
Stock-Based Compensation	14. Stock-Based Compensation ​ The Gold Resource Corporation 2016 Equity Incentive Plan (the “Incentive Plan”) allows for the issuance of up to 5 million shares of common stock in the form of incentive and non-qualified stock options, stock appreciation rights, restricted stock units (“RSUs”), stock grants, stock units, performance shares, performance share units and performance cash. Additionally, pursuant to the terms of the Incentive Plan, any award outstanding under the prior plan that is terminated, expired, forfeited, or canceled for any reason, will be available for grant under the Incentive Plan. ​ Effective January 1, 2021, the Company’s Board of Directors, on the recommendation of the Compensation Committee, implemented a program to issue Deferred Stock Units (DSUs). DSUs are a qualifying instrument under the terms of the Company’s 2016 Equity Plan and therefore do not require additional shareholder approval. The vesting and settlement terms of the DSUs are determined by the Compensation Committee at the time the DSUs are awarded. ​ 130,000 DSUs were granted to the Board of Directors during the period ended March 31, 2021 and are redeemable in cash or shares at the earlier of 10 years or upon the eligible directors’ termination. Termination is deemed to occur on the earliest of (1) the date of voluntary resignation or retirement of the director from the Board; (2) the date of death of the director; or (3) the date of removal of the director from the Board whether by shareholder resolution, failure to achieve re-election or otherwise; and on which date the director is not a director or employee of the Company or any of its affiliates. These awards contain a cash settlement feature and are therefore classified as a liability and are marked to fair value each reporting period. The Company recorded $0.3 million of other non-current liability and expense ​ During the three months ended March 31, 2021, a total of 2,614 RSUs vested, and shares were issued with an intrinsic value During the three months ended March 31, 2021, stock options to purchase an aggregate of 125,000 shares of the Company’s common stock were exercised at a weighted average exercise price of $1.32 per share. No stock options were exercised during the three months ended March 31, 2020. ​ Stock-based compensation expense for stock options and RSUs and DSUs for the periods presented is as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Stock options ​ $ 227 ​ $ 222 ​ Restricted stock units ​ ​ (86) ​ ​ 248 ​ Deferred stock units ​ ​ 343 ​ ​ - ​ Total ​ $ 484 ​ $ 470 ​ The Company has a short-term incentive plan for its executive officers that provides for the grant of either cash or stock-based bonus awards payable upon achievement of specified performance metrics (the “STIP”). As of March 31, 2021 and December 31, 2020, nil has been accrued related to the STIP ​

Shareholders' Equity

Shareholders' Equity	3 Months Ended
	Mar. 31, 2021
Shareholders' Equity
Shareholders' Equity	15. Shareholders’ Equity On April 3, 2018, the Company entered into an At-The-Market Offering Agreement (the “ATM Agreement”) with an investment banking firm (“Agent”) pursuant to which the Agent agreed to act as the Company’s sales agent with respect to the offer and sale from time to time of the Company’s common stock having an aggregate gross sales price of up to $75.0 million (the “Shares”), which was subsequently renewed in June 2020. The ATM Agreement will remain in full force and effect until the earlier of (i) June 3, 2023 or (ii) the date that the ATM Agreement is terminated in accordance with its terms. An aggregate of 3,850,000 shares of the Company’s common stock were sold through the ATM Agreement during the three months ended March 31, 2020 for net proceeds to the Company, after deducting the Agent’s commissions and other expenses, of $10.4 million. No ATM shares were sold during the first quarter of 2021. For both of the three months ended March 31, 2021 and 2020, the Company declared and paid dividends of $0.01 per common share, for an aggregate total of $0.7 million each three-month period.

Other (Income) Expense, net

Other (Income) Expense, net	3 Months Ended
	Mar. 31, 2021
Other (Income) Expense, net
Other (Income) Expense, net	16. Other (Income) Expense, net ​ Other (income) expense, net, for the periods presented consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Unrealized currency exchange loss ​ $ 241 ​ $ 1,618 ​ Realized currency exchange gain ​ ​ (173) ​ ​ (291) ​ Unrealized loss from gold and silver rounds/bullion, net (1) ​ ​ 66 ​ ​ 151 ​ Other income ​ ​ (448) ​ ​ (13) ​ Total ​ $ (314) ​ $ 1,465 ​ (1) Gains and losses due to changes in fair value are non-cash in nature until such time that they are realized through cash transactions. For additional information regarding the Company’s fair value measurements and investments, please see Note 18 .

Net Income per Common Share

Net Income per Common Share	3 Months Ended
	Mar. 31, 2021
Net Income per Common Share
Net Income per Common Share	17. Net Income per Common Share ​ Basic earnings per common share are calculated based on the weighted average number of common shares outstanding for the period. Diluted earnings per common share are calculated based on the assumption that stock options and other dilutive securities outstanding, which have an exercise price less than the average market price of the Company’s common shares during the period, would have been exercised on the later of the beginning of the period or the date granted and that the funds obtained from the exercise were used to purchase common shares at the average market price during the period. All of the Company’s RSUs and DSUs are considered to be dilutive in periods with net income. ​ The effect of the Company’s dilutive securities is calculated using the treasury stock method and only those instruments that result in a reduction in net income per common share are included in the calculation. Options to purchase 3.9 million and 3.3 million shares of common stock at weighted average exercise prices of $7.20 and $9.48 were outstanding at March 31, 2021 and 2020, respectively, but were not included in the computation of diluted weighted average common shares outstanding, as the exercise price of the options exceeded the average price of the Company’s common stock during the reporting period, and therefore are anti-dilutive. ​ Basic and diluted net income per common share is calculated as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ 2021 ​ 2020 ​ Numerator: ​ ​ ​ ​ ​ ​ ​ Net income (loss) from continuing operations ​ ​ 2,527 ​ ​ (3,218) ​ Net income from discontinued operations ​ ​ - ​ ​ 97 ​ Net income (loss) (in thousands) ​ $ 2,527 ​ $ (3,121) ​ ​ ​ ​ ​ ​ ​ ​ ​ Denominator: ​ ​ ​ ​ ​ ​ ​ Basic weighted average shares of common stock outstanding ​ ​ 74,405,031 ​ ​ 66,022,202 ​ Dilutive effect of share-based awards ​ ​ 356,851 ​ ​ - ​ Diluted weighted average common shares outstanding ​ ​ 74,761,882 ​ ​ 66,022,202 ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted net income (loss) per common share: ​ ​ ​ ​ ​ ​ ​ Continuing operations ​ ​ 0.03 ​ ​ (0.05) ​ Discontinued operations ​ ​ - ​ ​ - ​ Basic and diluted net income (loss) per common share ​ $ 0.03 ​ $ (0.05) ​ ​

Fair Value Measurement

Fair Value Measurement	3 Months Ended
	Mar. 31, 2021
Fair Value Measurement
Fair Value Measurement	18. Fair Value Measurement ​ Fair value accounting establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below: ​ Level 1 Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; ​ Level 2 Quoted prices in markets that are not active, or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability; and ​ Level 3 Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (supported by little or no market activity). ​ As required by accounting guidance, assets are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The following table sets forth certain of the Company’s assets measured at fair value by level within the fair value hierarchy as of March 31, 2021 and December 31, 2020: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ Input Hierarchy Level ​ ​ (in thousands) ​ ​ Cash and cash equivalents ​ $ 27,230 ​ $ 25,405 ​ Level 1 Gold and silver rounds/bullion ​ $ 593 ​ $ 671 ​ Level 1 Accounts receivable, net ​ $ 3,533 ​ $ 4,226 ​ Level 2 ​ Cash and cash equivalents consist primarily of cash deposits and are valued at cost, which approximates fair value. Gold and silver rounds/bullion consist of precious metals used for investment purposes and in the dividend program which are valued using quoted market prices. Please see Note 5 ​ Accounts receivable, net include amounts due to the Company for deliveries of concentrates and doré sold to customers, net of embedded derivatives mark-to-market value of $0.1 as of March 31, 2021, and $0.2 million as of December 31, 2020. Concentrate sales contracts provide for provisional pricing as specified in such contracts. These sales contain an embedded derivative related to the provisional pricing mechanism which is bifurcated and accounted for as a derivative. At the end of each reporting period, the Company records an adjustment to sales to reflect the mark-to-market of outstanding provisional invoices based on the forward price curve. Because these provisionally priced sales have not yet settled as of the reporting date, the mark-to-market adjustment related to these invoices is included in accounts receivable as of each reporting date and included in its accounts receivable on the accompanying Condensed Consolidated Balance Sheets related to mark-to-market adjustments. Please see Note 13 ​ Gains and losses related to changes in the fair value of these financial instruments were included in the Company’s Condensed Consolidated Statements of Operations as shown in the following table: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ ​ 2021 ​ 2020 ​ ​ Statement of Operations Classification ​ ​ (in thousands) ​ ​ Realized/unrealized derivative (loss) gain, net ​ $ (35) ​ $ (738) ​ ​ Sales, net Realized/unrealized gold and silver rounds/bullion gain (loss), net ​ $ (66) ​ $ (152) ​ ​ Other expense, net ​ Realized/Unrealized Derivatives ​ The following tables summarize the Company’s realized/unrealized derivatives for the periods presented (in thousands) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gold ​ Silver ​ Copper ​ Lead ​ Zinc ​ Total Three months ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Realized (loss) gain ​ $ (44) ​ $ 85 ​ $ 5 ​ $ 44 ​ $ 1 ​ $ 91 Unrealized (loss) gain ​ ​ (100) ​ ​ (82) ​ ​ 39 ​ ​ (66) ​ ​ 83 ​ ​ (126) Total realized/unrealized derivatives, net ​ $ (144) ​ $ 3 ​ $ 44 ​ $ (22) ​ $ 84 ​ $ (35) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gold ​ Silver ​ Copper ​ Lead ​ Zinc ​ Total Three months ended March 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Realized gain (loss) ​ $ 351 ​ $ 160 ​ $ 5 ​ $ (157) ​ $ (817) ​ $ (458) Unrealized (loss) gain ​ ​ (128) ​ ​ (325) ​ ​ (119) ​ ​ 50 ​ ​ 242 ​ ​ (280) Total realized/unrealized derivatives, net ​ $ 223 ​ $ (165) ​ $ (114) ​ $ (107) ​ $ (575) ​ $ (738) ​

Supplementary Cash Flow Informa

Supplementary Cash Flow Information	3 Months Ended
	Mar. 31, 2021
Supplementary Cash Flow Information
Supplementary Cash Flow Information	19. Supplementary Cash Flow Information ​ Other operating adjustments and write-downs within the net cash provided by operations on the Condensed Consolidated Statements of Cash Flows for the three months ended March 31, 2021 and 2020 consisted of the following: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Unrealized loss on gold and silver rounds/bullion ​ $ 66 ​ $ 151 ​ Realized gain on gold and silver rounds/bullion ​ ​ - ​ ​ 1 ​ Unrealized foreign currency exchange loss ​ ​ 241 ​ ​ 1,618 ​ Other ​ ​ 33 ​ ​ 22 ​ Total other operating adjustments ​ $ 340 ​ $ 1,792 ​ ​

COVID-19 Pandemic

COVID-19 Pandemic	3 Months Ended
	Mar. 31, 2021
COVID-19 Pandemic
COVID-19 Pandemic	​ ​ ​ ​ ​ ​ 20. COVID-19 Pandemic ​ On March 11, 2020, the World Health Organization declared the outbreak of a respiratory disease caused by a new novel coronavirus (“COVID-19”) as a “pandemic”. On March 31, 2020, the Mexican government issued a national health emergency with an immediate suspension order for all “non-essential” public and private sector business (which included mining) to mitigate the spread and transmission of the COVID-19. As a result, the Company suspended its Mexico operations and production on April 1, 2020. The Mexican government designated mining as an essential business in mid-May 2020 and as a result we were given approval to restart our operations on May 27, 2020. After a ramp-up period, the Company recommenced operations with appropriate safety measures in place to guard against and mitigate the virus and its spread. ​ As of the date of the issuance of these unaudited Condensed Consolidated Financial Statements, there have been no other significant impacts, including impairments, to the Company’s operations and financial statements. However, the long-term impact of the COVID-19 outbreak on the Company’s results of operations, financial position and cash flows will depend on future developments, including the duration and spread of the outbreak and related advisories and restrictions. These developments and the impact of COVID-19 on the financial markets and the overall economy are highly uncertain and cannot be predicted. If the financial markets and/or the overall economy are impacted for an extended period, the Company’s results of operations, financial position and cash flows may be materially adversely affected. The Company is not able to estimate the duration of the pandemic and potential impact on its business if disruptions or delays in business developments and shipments of product occur. In addition, a severe prolonged economic downturn could result in a variety of risks to the business, including a decreased ability to raise additional capital when and if needed on acceptable terms, if at all. As the situation continues to evolve, the Company will continue to closely monitor market conditions and respond accordingly. The Company has completed various scenario planning analyses to consider potential impacts of COVID-19 on its business, including volatility in commodity prices, temporary disruptions and/or curtailments of operating activities (voluntary or involuntary). To provide additional flexibility to respond to potential downside scenarios, the Company utilized the ATM program that was previously in place to raise approximately $ 11.9 million through the sale of common stock during the first and second quarters of 2020 to provide additional financial flexibility. The Company believes that current working capital balances will be sufficient for the foreseeable future, although there is no assurance that will be the case.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2021
Subsequent Events
Subsequent Events	21. Subsequent Events On December 31, 2020, in connection with the spin-off by Gold Resource Corporation (the "Company" or "GRC") of its wholly-owned subsidiary, Fortitude Gold Corporation ("FGC"), into a separate, public company, the Company entered into a Management Services Agreement (the "Agreement") with FGC. Under the terms of the Agreement, GRC agreed to provide strategic, technical, management, and administrative support services to FGC. Due to the successful development, by FGC, of their own corporate, administrative and technical capabilities, the Company decided to terminate the Agreement and delivered a notice of termination on April 14, 2021. The Agreement provided that either party could terminate the Agreement upon 30 days written notice by one party to the other. Termination of the Agreement will be effective on May 21, 2021. On Friday, April 23, 2021, a decree that reforms labor outsourcing in Mexico was published in the Federation’s Official Gazette. This new decree amends the outsourcing provisions of the Federal Labor Law (FLL), the Social Security Law, the Law of the Institute of the National Housing Fund for Workers, the Federal Fiscal Code (FFC), the Income Tax Law and the Value Added Tax Law. Under this new decree, operating companies will no longer be able to source their labor resources used to carry out the core business functions from services entities or third-party providers. The Company has been monitoring the guidance provided and has initiated the efforts to comply with the newly published reform. The overall impact of the new decree and its provisions continue to be assessed. ​

Basis of Preparation of Finan_2

Basis of Preparation of Financial Statements (Policy)	3 Months Ended
	Mar. 31, 2021
Basis of Preparation of Financial Statements
Basis of Preparation of Financial Statements	​ The interim Condensed Consolidated Financial Statements (“interim financial statements”) of Gold Resource Corporation and its subsidiaries (collectively, the “Company”) are unaudited and have been prepared in accordance with the rules of the Securities and Exchange Commission for interim statements. Certain information and footnote disclosures required by United States Generally Accepted Accounting Principles (“U.S. GAAP”) have been condensed or omitted as permitted by such rules, although the Company believes that the disclosures included are adequate to make the information presented not misleading. In the opinion of management, all adjustments (including normal recurring adjustments) and disclosures necessary for a fair presentation of these interim financial statements have been included. The results reported in these interim financial statements are not necessarily indicative of the results that may be reported for the entire year. These interim financial statements should be read in conjunction with the audited consolidated financial statements for the year ended December 31, 2020 included in the Company’s annual report on Form 10-K. The year-end balance sheet data was derived from the audited financial statements. Unless otherwise noted, there have been no material changes to the footnotes from those accompanying the audited consolidated financial statements contained in the Company’s annual report on Form 10-K. ​ Certain items in the prior period’s Condensed Consolidated Financial Statements have been reclassified to conform to the current presentation. These reclassifications were mostly related to Discontinued Operations and separate presentation of stock-based compensation.

Recently Adopted Accounting S_2

Recently Adopted Accounting Standards (Policy)	3 Months Ended
	Mar. 31, 2021
Recently Adopted Accounting Standards
Recently Adopted Accounting Standards	​ Recent accounting pronouncements issued have been evaluated and do not presently impact our financial statements and supplemental data.

Discontinued Operations (Tables

Discontinued Operations (Tables)	3 Months Ended
	Mar. 31, 2021
Discontinued Operations
Schedule of discontinued operations in company's condensed consolidated financial statements	Results of discontinued operations for the three months ended March 31, 2020 are as follows ( in thousands ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ 2020 ​ ​ (Unaudited) ​ Sales, net $ 5,857 ​ Mine cost of sales ​ 6,300 ​ Mine gross loss ​ (443) ​ Exploration expenses ​ 177 ​ Other expense, net ​ 48 ​ Loss before income taxes ​ (668) ​ Income tax benefit ​ (765) ​ Net income from discontinued operations $ 97 ​ Selected Statements of Cash Flows presenting depreciation and amortization, capital expenditures, sale proceeds and significant operating noncash items of FGC were as follows: ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ ​ 2020 ​ ​ ​ ​ (Unaudited) ​ Cash flows from discontinued operating activities: ​ ​ ​ ​ ​ Net income ​ ​ $ 97 ​ Adjustments to reconcile net income to net cash from operating activities: ​ ​ ​ ​ ​ Deferred income taxes ​ ​ ​ (765) ​ Depreciation and amortization ​ ​ ​ 1,422 ​ Other operating adjustments ​ ​ ​ (11) ​ Changes in operating assets and liabilities: ​ ​ ​ ​ ​ Accounts receivable ​ ​ ​ (169) ​ Inventories ​ ​ ​ (1,786) ​ Prepaid expenses and other current assets ​ ​ ​ 82 ​ Other non-current assets ​ ​ ​ 931 ​ Accounts payable and other accrued liabilities ​ ​ ​ (1,030) ​ Net cash used in discontinued operating activities ​ ​ ​ (1,229) ​ ​ ​ ​ ​ ​ ​ Cash flows from discontinued investing activities: ​ ​ ​ ​ ​ Capital expenditures ​ ​ ​ (3,447) ​ Net cash used in discontinued investing activities ​ ​ ​ (3,447) ​ ​ ​ ​ ​ ​ ​ Cash flows from discontinued financing activities: ​ ​ ​ ​ ​ Cash transferred from Gold Resource Corporation prior to Spin-off ​ ​ ​ 4,508 ​ Repayment of loans payable ​ ​ ​ (216) ​ Repayment of finance leases ​ ​ ​ (107) ​ Net cash provided by discontinued financing activities ​ ​ ​ 4,185 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Supplemental Cash Flow Information Discontinued Operations ​ ​ ​ ​ ​ Non-cash investing activities: ​ ​ ​ ​ ​ Change in capital expenditures in accounts payable ​ ​ $ 516 ​ Change in estimate for asset retirement costs ​ ​ $ 435 ​

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2021
Revenue
Revenue from the sale of dore and concentrate	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Doré sales, net ​ ​ ​ ​ ​ ​ ​ Gold ​ $ 2,487 ​ $ 1,769 ​ Silver ​ ​ 377 ​ ​ 676 ​ Less: Refining charges ​ ​ (71) ​ ​ (35) ​ Total doré sales, net ​ ​ 2,793 ​ ​ 2,410 ​ Concentrate sales ​ ​ ​ ​ ​ ​ ​ Gold ​ ​ 6,524 ​ ​ 6,216 ​ Silver ​ ​ 6,313 ​ ​ 5,215 ​ Copper ​ ​ 3,386 ​ ​ 2,361 ​ Lead ​ ​ 2,405 ​ ​ 3,479 ​ Zinc ​ ​ 8,766 ​ ​ 9,040 ​ Less: Treatment and refining charges ​ ​ (2,884) ​ ​ (5,834) ​ Total concentrate sales, net ​ ​ 24,510 ​ ​ 20,477 ​ Realized/unrealized embedded derivative, net ​ ​ (35) ​ ​ (738) ​ Total sales, net ​ $ 27,268 ​ $ 22,149 ​

Gold and Silver Rounds_Bullion

Gold and Silver Rounds/Bullion (Tables)	3 Months Ended
	Mar. 31, 2021
Gold and Silver Rounds/Bullion
Schedule of Company's Holdings	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ Ounces ​ Per Ounce ​ Amount ​ Ounces ​ Per Ounce ​ Amount ​ ​ ​ ​ ​ ​ ​ (in thousands) ​ ​ ​ ​ ​ ​ (in thousands) Gold ​ 184 ​ $ 1,691 ​ $ 311 ​ 189 ​ $ 1,888 ​ $ 357 Silver ​ 11,750 ​ $ 24.00 ​ ​ 282 ​ 11,842 ​ $ 26.49 ​ ​ 314 Total holdings ​ ​ ​ ​ ​ ​ $ 593 ​ ​ ​ ​ ​ ​ $ 671

Inventories, net (Tables)

Inventories, net (Tables)	3 Months Ended
	Mar. 31, 2021
Inventories, net
Summary of Inventories	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Stockpiles - underground mine ​ $ 461 ​ $ 648 Stockpiles - open pit mine ​ ​ 17 ​ ​ 41 Concentrates ​ ​ 2,834 ​ ​ 1,919 Doré, net (1) ​ ​ 1,107 ​ ​ 459 Subtotal - product inventories ​ ​ 4,419 ​ ​ 3,067 Materials and supplies (2) ​ ​ 7,165 ​ ​ 6,928 Total ​ $ 11,584 ​ $ 9,995 (1) Net of reserve of nil and $368 at March 31, 2021 and December 31, 2020, respectively. (2) Net of reserve for obsolescence of $209 as of March 31, 2021 and December 31, 2020.

Prepaid Expenses and Other Cu_2

Prepaid Expenses and Other Current Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Prepaid Expenses And Other Current Assets
Schedule of prepaid and other assets	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Advances to suppliers ​ $ 365 ​ $ 374 Prepaid insurance ​ ​ 342 ​ ​ 709 IVA taxes receivable, net ​ ​ 318 ​ ​ 846 Other current assets ​ ​ 527 ​ ​ 647 Total ​ $ 1,552 ​ $ 2,576

Property, Plant and Mine Deve_2

Property, Plant and Mine Development, net (Tables)	3 Months Ended
	Mar. 31, 2021
Property, Plant and Mine Development, net
Schedule of property, plant and mine development	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Asset retirement costs ​ $ 1,071 ​ $ 1,064 Construction-in-progress (1) ​ ​ 9,549 ​ ​ 7,158 Furniture and office equipment ​ ​ 1,877 ​ ​ 1,839 Land ​ ​ 230 ​ ​ 230 Light vehicles and other mobile equipment ​ ​ 2,228 ​ ​ 2,192 Machinery and equipment ​ ​ 31,273 ​ ​ 31,227 Mill facilities and infrastructure ​ ​ 24,407 ​ ​ 24,407 Mine Development ​ ​ 85,623 ​ ​ 83,859 Software and licenses ​ ​ 1,619 ​ ​ 1,619 Subtotal (2) ​ ​ 157,877 ​ ​ 153,595 Accumulated depreciation and amortization ​ ​ (94,912) ​ ​ (91,084) Total ​ $ 62,965 ​ $ 62,511 (1) Includes accrued capital expenditures of $0.8 million and $1.0 million at March 31, 2021 and December 31, 2020, respectively. ​

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2021
Accrued Expenses and Other Current Liabilities
Schedule of Accrued Expenses and Other Current Liabilities	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Accrued royalty payments ​ ​ 1,637 ​ ​ 1,796 Dividends payable ​ ​ 248 ​ ​ 247 Other payables ​ ​ 202 ​ ​ 232 Total ​ $ 2,087 ​ $ 2,275

Reclamation and Remediation (Ta

Reclamation and Remediation (Tables)	3 Months Ended
	Mar. 31, 2021
Reclamation and Remediation
Changes in Reclamation and Remediation	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ (Unaudited) ​ ​ ​ ​ ​ (in thousands) Reclamation liabilities – balance at beginning of period ​ $ 1,890 ​ $ 2,003 Foreign currency exchange gain ​ ​ (61) ​ ​ (113) Reclamation liabilities – balance at end of period ​ ​ 1,829 ​ ​ 1,890 ​ ​ ​ ​ ​ ​ ​ Asset retirement obligation – balance at beginning of period ​ ​ 1,208 ​ ​ 1,105 Changes in estimate ​ ​ 7 ​ ​ 82 Accretion ​ ​ 24 ​ ​ 79 Foreign currency exchange gain ​ ​ (39) ​ ​ (58) Asset retirement obligation – balance at end of period ​ ​ 1,200 ​ ​ 1,208 Total period end balance ​ $ 3,029 ​ $ 3,098

Embedded Derivatives (Tables)

Embedded Derivatives (Tables)	3 Months Ended
	Mar. 31, 2021
Embedded Derivatives
Summary of unsettled sales contracts	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gold ​ Silver ​ Copper ​ Lead ​ Zinc ​ ​ (ounces) ​ (ounces) ​ (tonnes) ​ (tonnes) ​ (tonnes) Under contract ​ ​ 4,531 ​ ​ 302,534 ​ ​ 534 ​ ​ 1,398 ​ ​ 4,842 Average forward price (per ounce or tonne) ​ $ 1,806 ​ $ 26.13 ​ $ 8,386 ​ $ 2,004 ​ $ 2,759

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2021
Stock-Based Compensation
Stock-based compensation expense	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Stock options ​ $ 227 ​ $ 222 ​ Restricted stock units ​ ​ (86) ​ ​ 248 ​ Deferred stock units ​ ​ 343 ​ ​ - ​ Total ​ $ 484 ​ $ 470 ​

Other (Income) Expense, net (Ta

Other (Income) Expense, net (Tables)	3 Months Ended
	Mar. 31, 2021
Other (Income) Expense, net
Schedule of Other Expense, net	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Unrealized currency exchange loss ​ $ 241 ​ $ 1,618 ​ Realized currency exchange gain ​ ​ (173) ​ ​ (291) ​ Unrealized loss from gold and silver rounds/bullion, net (1) ​ ​ 66 ​ ​ 151 ​ Other income ​ ​ (448) ​ ​ (13) ​ Total ​ $ (314) ​ $ 1,465 ​ (1) Gains and losses due to changes in fair value are non-cash in nature until such time that they are realized through cash transactions. For additional information regarding the Company’s fair value measurements and investments, please see Note 18 .

Net Income per Common Share (Ta

Net Income per Common Share (Tables)	3 Months Ended
	Mar. 31, 2021
Net Income per Common Share
Schedule of net income per common share	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ 2021 ​ 2020 ​ Numerator: ​ ​ ​ ​ ​ ​ ​ Net income (loss) from continuing operations ​ ​ 2,527 ​ ​ (3,218) ​ Net income from discontinued operations ​ ​ - ​ ​ 97 ​ Net income (loss) (in thousands) ​ $ 2,527 ​ $ (3,121) ​ ​ ​ ​ ​ ​ ​ ​ ​ Denominator: ​ ​ ​ ​ ​ ​ ​ Basic weighted average shares of common stock outstanding ​ ​ 74,405,031 ​ ​ 66,022,202 ​ Dilutive effect of share-based awards ​ ​ 356,851 ​ ​ - ​ Diluted weighted average common shares outstanding ​ ​ 74,761,882 ​ ​ 66,022,202 ​ ​ ​ ​ ​ ​ ​ ​ ​ Basic and diluted net income (loss) per common share: ​ ​ ​ ​ ​ ​ ​ Continuing operations ​ ​ 0.03 ​ ​ (0.05) ​ Discontinued operations ​ ​ - ​ ​ - ​ Basic and diluted net income (loss) per common share ​ $ 0.03 ​ $ (0.05) ​

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Measurement
Assets measured at fair value by level within fair value hierarchy	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ Input Hierarchy Level ​ ​ (in thousands) ​ ​ Cash and cash equivalents ​ $ 27,230 ​ $ 25,405 ​ Level 1 Gold and silver rounds/bullion ​ $ 593 ​ $ 671 ​ Level 1 Accounts receivable, net ​ $ 3,533 ​ $ 4,226 ​ Level 2
Gains and Losses Related to Changes in Fair Value	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Three months ended March 31, ​ ​ ​ ​ 2021 ​ 2020 ​ ​ Statement of Operations Classification ​ ​ (in thousands) ​ ​ Realized/unrealized derivative (loss) gain, net ​ $ (35) ​ $ (738) ​ ​ Sales, net Realized/unrealized gold and silver rounds/bullion gain (loss), net ​ $ (66) ​ $ (152) ​ ​ Other expense, net
Realized and Unrealized Gain Losses on Derivatives	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gold ​ Silver ​ Copper ​ Lead ​ Zinc ​ Total Three months ended March 31, 2021 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Realized (loss) gain ​ $ (44) ​ $ 85 ​ $ 5 ​ $ 44 ​ $ 1 ​ $ 91 Unrealized (loss) gain ​ ​ (100) ​ ​ (82) ​ ​ 39 ​ ​ (66) ​ ​ 83 ​ ​ (126) Total realized/unrealized derivatives, net ​ $ (144) ​ $ 3 ​ $ 44 ​ $ (22) ​ $ 84 ​ $ (35) ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Gold ​ Silver ​ Copper ​ Lead ​ Zinc ​ Total Three months ended March 31, 2020 ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Realized gain (loss) ​ $ 351 ​ $ 160 ​ $ 5 ​ $ (157) ​ $ (817) ​ $ (458) Unrealized (loss) gain ​ ​ (128) ​ ​ (325) ​ ​ (119) ​ ​ 50 ​ ​ 242 ​ ​ (280) Total realized/unrealized derivatives, net ​ $ 223 ​ $ (165) ​ $ (114) ​ $ (107) ​ $ (575) ​ $ (738)

Supplementary Cash Flow Infor_2

Supplementary Cash Flow Information (Tables)	3 Months Ended
	Mar. 31, 2021
Supplementary Cash Flow Information
Schedule of Supplementary Cash Flow Information	​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2021 ​ 2020 ​ ​ ​ (in thousands) ​ Unrealized loss on gold and silver rounds/bullion ​ $ 66 ​ $ 151 ​ Realized gain on gold and silver rounds/bullion ​ ​ - ​ ​ 1 ​ Unrealized foreign currency exchange loss ​ ​ 241 ​ ​ 1,618 ​ Other ​ ​ 33 ​ ​ 22 ​ Total other operating adjustments ​ $ 340 ​ $ 1,792 ​

Discontinued Operations - Resul

Discontinued Operations - Results of discontinued operations (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income (loss) from discontinued operations, net of income taxes	$ 97
Fortitude Gold Corporation and Subsidiaries | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales, net	5,857
Mine cost of sales	6,300
Mine gross profit	(443)
Exploration expenses	177
Other expense, net	48
Loss before income taxes	(668)
Provision for income taxes	(765)
Net income (loss) from discontinued operations, net of income taxes	$ 97

Discontinued Operations - Selec

Discontinued Operations - Selected Statements of Cash Flows (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Cash flows from discontinued operating activities:
Net income from discontinuing operations	$ 97
Changes in operating assets and liabilities:
Net cash used in discontinued operating activities	(1,229)
Cash flows from discontinued investing activities:
Net cash used in discontinued investing activities	(3,447)
Cash flows from discontinued financing activities:
Cash transferred from Gold Resource Corporation at Spin-Off	292
Fortitude Gold Corporation and Subsidiaries | Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Spinoff
Cash flows from discontinued operating activities:
Net income from discontinuing operations	97
Adjustments to reconcile net income to net cash from operating activities:
Deferred income taxes	(765)
Depreciation and amortization	1,422
Other operating adjustments	(11)
Changes in operating assets and liabilities:
Accounts receivable	(169)
Inventories	(1,786)
Prepaid expenses and other current assets	82
Other non-current assets	931
Accounts payable and other accrued liabilities	(1,030)
Net cash used in discontinued operating activities	(1,229)
Cash flows from discontinued investing activities:
Capital expenditures	(3,447)
Net cash used in discontinued investing activities	(3,447)
Cash flows from discontinued financing activities:
Cash transferred from Gold Resource Corporation prior to Spin-off	4,508
Repayment of loans payable	(216)
Repayment of finance leases	(107)
Net cash provided by discontinued financing activities	4,185
Non-cash investing activities:
Change in capital expenditures in accounts payable	516
Change in estimate for asset retirement costs	$ 435

Revenue (Details)

Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Realized/unrealized embedded derivative, net	$ (35)	$ (738)
Total sales, net	27,268	22,149
Dore
Disaggregation of Revenue [Line Items]
Less: Treatment and refining charges	(71)	(35)
Total sales, net	2,793	2,410
Gold Dore
Disaggregation of Revenue [Line Items]
Total sales, net	2,487	1,769
Silver Dore
Disaggregation of Revenue [Line Items]
Total sales, net	377	676
Concentrate
Disaggregation of Revenue [Line Items]
Less: Treatment and refining charges	(2,884)	(5,834)
Total sales, net	24,510	20,477
Gold Concentrate
Disaggregation of Revenue [Line Items]
Total sales, net	6,524	6,216
Silver Concentrate
Disaggregation of Revenue [Line Items]
Total sales, net	6,313	5,215
Copper Concentrate
Disaggregation of Revenue [Line Items]
Total sales, net	3,386	2,361
Lead Concentrate
Disaggregation of Revenue [Line Items]
Total sales, net	2,405	3,479
Zinc Concentrate
Disaggregation of Revenue [Line Items]
Total sales, net	$ 8,766	$ 9,040

Gold and Silver Rounds_Bullio_2

Gold and Silver Rounds/Bullion (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)oz$ / oz	Dec. 31, 2020USD ($)oz$ / oz
Schedule of Investments [Line Items]
Total carrying value	$ 593	$ 671
Gold
Schedule of Investments [Line Items]
Ounces | oz	184	189
Carrying value per ounce | $ / oz	1,691	1,888
Total carrying value	$ 311	$ 357
Silver
Schedule of Investments [Line Items]
Ounces | oz	11,750	11,842
Carrying value per ounce | $ / oz	24	26.49
Total carrying value	$ 282	$ 314
Gold and Silver
Schedule of Investments [Line Items]
Other Income	$ 0

Inventories, net (Details)

Inventories, net (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Stockpiles - underground mine		$ 461	$ 648
Stockpiles - open pit mine		17	41
Concentrates		2,834	1,919
Dore, net	[1]	1,107	459
Subtotal - product inventories		4,419	3,067
Materials and supplies	[2]	7,165	6,928
Total		11,584	9,995
Dore
Inventory reserve		0	368
Materials and supplies
Inventory reserve		$ 209	$ 209
[1]	Net of reserve of nil and $368 at March 31, 2021 and December 31, 2020, respectively.
[2]	Net of reserve for obsolescence of $209 as of March 31, 2021 and December 31, 2020.

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income tax expense	$ 2,594,000	$ (1,372,000)
Effective tax rate	21.00%
Withholding tax on dividends	10.00%
Dividend withholding tax between countries	5.00%
Liability for uncertain tax positions	$ 0
GILTI Effective Tax Rate Above U.S. Tax Rate	90.00%
GILTI Effective Tax Rate Percent Above U.S. Tax Rate	18.90%
Mexico
MITL corporate income tax rate	37.50%
MITL corporate income tax rate excluding mining tax	30.00%
Mining tax rate	7.50%
Prior MITL Deductable Percentage	100.00%
Exploration Expense Maximum Annual Deductable Percentage	10.00%
Exploration Expense Period	10 years
CANADA
MITL corporate income tax rate	26.50%

Prepaid Expenses and Other Cu_3

Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Prepaid Expenses And Other Current Assets
Advances to suppliers	$ 365	$ 374
Prepaid insurance	342	709
IVA taxes receivable, net	318	846
Other current assets	527	647
Total	$ 1,552	$ 2,576

Property, Plant and Mine Deve_3

Property, Plant and Mine Development, net - Summary of Property, Equipment and Mine Development (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020
Property, equipment and mine development - net
Property and equipment, gross	[1]	$ 157,877	$ 153,595
Accumulated depreciation and amortization		(94,912)	(91,084)
Total property, equipment and mine development - net		62,965	62,511
Accrued capital expenditures		800	1,000
Asset retirement costs
Property, equipment and mine development - net
Property and equipment, gross		1,071	1,064
Construction-in-progress
Property, equipment and mine development - net
Property and equipment, gross		9,549	7,158
Furniture and office equipment
Property, equipment and mine development - net
Property and equipment, gross		1,877	1,839
Land
Property, equipment and mine development - net
Property and equipment, gross		230	230
Light vehicles and other mobile equipment
Property, equipment and mine development - net
Property and equipment, gross		2,228	2,192
Machinery and equipment
Property, equipment and mine development - net
Property and equipment, gross		31,273	31,227
Mill facilities and infrastructure
Property, equipment and mine development - net
Property and equipment, gross		24,407	24,407
Mine Development
Property, equipment and mine development - net
Property and equipment, gross		85,623	83,859
Software and licenses
Property, equipment and mine development - net
Property and equipment, gross		$ 1,619	$ 1,619
[1]	Includes accrued capital expenditures of $0.8 million and $1.0 million at March 31, 2021 and December 31, 2020, respectively.

Property, Plant and Mine Deve_4

Property, Plant and Mine Development, net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Property, Plant and Mine Development, net
Depreciation and amortization expense	$ 3,437	$ 6,113

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accrued Expenses and Other Current Liabilities
Accrued royalty payments	$ 1,637	$ 1,796
Dividends payable	248	247
Other payables	202	232
Total	$ 2,087	$ 2,275

Reclamation and Remediation (De

Reclamation and Remediation (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Asset Retirement Obligation, Roll Forward Analysis
Reclamation liabilities - balance at beginning of period	$ 1,890	$ 2,003
Foreign currency exchange gain	(61)	(113)
Reclamation liabilities - balance at end of period	1,829	1,890
Asset retirement obligation - balance at beginning of period	1,208	1,105
Changes in estimate	7	82
Accretion	24	79
Foreign currency exchange gain	(39)	(58)
Asset retirement obligation - balance at end of period	1,200	1,208
Total period end balance	$ 3,029	$ 3,098

Reclamation and Remediation - N

Reclamation and Remediation - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Asset Retirement Obligation	$ 1,200	$ 1,208	$ 1,105
Reclamation and remediation discount rate	8.00%
Reclamation Liabilities	$ 1,829	1,890	$ 2,003
Aguila Project
Reclamation Liabilities	1,800	1,900
Don David Gold Mine
Asset Retirement Obligation	$ 1,200	$ 1,200

Commitments and Contingencies (

Commitments and Contingencies (Narrative) (Details) $ in Millions	Mar. 31, 2021USD ($)
Commitments and Contingencies
Equipment purchase commitments	$ 0.7

Embedded Derivatives (Details)

Embedded Derivatives (Details)	3 Months Ended
	Mar. 31, 2021$ / t$ / oztoz
Gold
Embedded Derivative [Line Items]
Under contract | oz	4,531
Average forward price | $ / oz	1,806
Silver
Embedded Derivative [Line Items]
Under contract | oz	302,534
Average forward price | $ / oz	26.13
Copper
Embedded Derivative [Line Items]
Under contract | t	534
Average forward price | $ / t	8,386
Lead
Embedded Derivative [Line Items]
Under contract | t	1,398
Average forward price | $ / t	2,004
Zinc
Embedded Derivative [Line Items]
Under contract | t	4,842
Average forward price | $ / t	2,759

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock-based compensation expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Stock-Based Compensation
Stock options	$ 227	$ 222
Restricted stock units	(86)	248
Deferred stock units	343
Total	$ 484	$ 470

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity Incentive plan shares for issuance authorized	5,000,000
Weighted Average Exercise Price, Exercised	$ 1.32
Number of stock options exercised	125,000	0
Accrued expenses and other current liabilities	$ 2,087		$ 2,275
STIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accrued expenses and other current liabilities	0		$ 0
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total intrinsic value	6,692
Fair value	$ 6,692
Vested (in shares)	2,614	0
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of units Granted	130,000
Additional disclosures
Vesting period	10 years
Deferred stock units liability	$ 300
Deferred stock units expense	$ 300

Shareholders' Equity (Details)

Shareholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Apr. 03, 2018
Value of shares issued		$ 10,350
Common Stock, Dividends, Per Share, Declared and Paid	$ 0.01	$ 0.01
Dividends	$ 744	$ 665
ATM Agreement
Sale of shares	0	3,850,000
Value of shares issued		$ 10,400
Maximum | ATM Agreement
Common stock aggregate gross sales price			$ 75,000

Other (Income) Expense, net (De

Other (Income) Expense, net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other (Income) Expense, net
Unrealized currency exchange loss	$ 241	$ 1,618
Realized currency exchange gain	(173)	(291)
Unrealized loss from gold and silver rounds/bullion, net	66	151
Other income	(448)	(13)
Total	$ (314)	$ 1,465

Net Income per Common Share - N

Net Income per Common Share - Narrative (Details) - $ / shares shares in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Income per Common Share
Stock options excluded from computation of diluted weighted average share outstanding	3.9	3.3
Shares excluded from weighted average shares outstanding, exercise price	$ 7.20	$ 9.48

Net Income per Common Share - P

Net Income per Common Share - Potential Dilutive Stock Options On Weighted Average Shares Outstanding (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Income per Common Share
Net income (loss) from continuing operations	$ 2,527	$ (3,218)
Net income (loss) from discontinued operations, net of income taxes		97
Net income (loss)	$ 2,527	$ (3,121)
Basic weighted average shares of common stock outstanding	74,405,031	66,022,202
Dilutive effect of share-based awards	356,851
Weighted Average Number of Shares Outstanding, Diluted, Total	74,761,882	66,022,202
Basic and diluted net income (loss) per common share:
Continuing operations	$ 0.03	$ (0.05)
Basic and diluted net income (loss) per common share	$ 0.03	$ (0.05)

Fair Value Measurement (Details

Fair Value Measurement (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net allowance for doubtful accounts	$ 100	$ 200
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	27,230	25,405
Gold and silver rounds/bullion	593	671
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accounts receivable, net	$ 3,533	$ 4,226

Fair Value Measurement - Statem

Fair Value Measurement - Statement Of Income Classification (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Sales, net
Fair Value Statement Of Income Classification [Line Items]
Realized/unrealized derivative (loss) gain, net	$ (35)	$ (738)
Other expenses, net
Fair Value Statement Of Income Classification [Line Items]
Realized/unrealized gold and silver rounds/bullion gain (loss), net	$ (66)	$ (152)

Fair Value Measurement - Realiz

Fair Value Measurement - Realized Unrealized Derivatives, net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivatives, Fair Value [Line Items]
Realized (loss) gain	$ 91	$ (458)
Unrealized (loss) gain	(126)	(280)
Total realized/ unrealized derivatives, net	(35)	(738)
Gold
Derivatives, Fair Value [Line Items]
Realized (loss) gain	(44)	351
Unrealized (loss) gain	(100)	(128)
Total realized/ unrealized derivatives, net	(144)	223
Silver
Derivatives, Fair Value [Line Items]
Realized (loss) gain	85	160
Unrealized (loss) gain	(82)	(325)
Total realized/ unrealized derivatives, net	3	(165)
Copper
Derivatives, Fair Value [Line Items]
Realized (loss) gain	5	5
Unrealized (loss) gain	39	(119)
Total realized/ unrealized derivatives, net	44	(114)
Lead
Derivatives, Fair Value [Line Items]
Realized (loss) gain	44	(157)
Unrealized (loss) gain	(66)	50
Total realized/ unrealized derivatives, net	(22)	(107)
Zinc
Derivatives, Fair Value [Line Items]
Realized (loss) gain	1	(817)
Unrealized (loss) gain	83	242
Total realized/ unrealized derivatives, net	$ 84	$ (575)

Supplementary Cash Flow Infor_3

Supplementary Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Supplementary Cash Flow Information
Unrealized loss on gold and silver rounds/bullion	$ 66	$ 151
Realized gain on gold and silver rounds/bullion		1
Unrealized foreign currency exchange loss	241	1,618
Other	33	22
Total other operating adjustments	$ 340	$ 1,792

COVID-19 Pandemic (Details)

COVID-19 Pandemic (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020USD ($)
ATM Agreement
Proceeds from sale of common stock	$ 11.9