Summary of Significant Accounting Policies (Policies)	12 Months Ended
Summary of Significant Accounting Policies (Policies)	Dec. 31, 2019
Summary of Significant Accounting Policies
Basis of accounting	The Company’s consolidated financial statements have been prepared in accordance with U.S. GAAP. The preparation of the Company’s consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and related disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. The more significant areas requiring the use of management estimates and assumptions relate to mineralized material and related future metals prices that are the basis for future cash flow estimates utilized in impairment calculations; depreciation, depletion and amortization calculations; environmental reclamation and closure obligations; valuation allowances for deferred tax assets and the fair value of financial instruments. The Company based its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Actual results may differ significantly from these estimates under different assumptions or conditions.
Basis of consolidation	a.Basis of consolidation All of the Company’s consolidated subsidiaries are 100% owned and as such the Company does not have a noncontrolling interest in any of its subsidiaries. All intercompany transactions and balances have been eliminated at consolidation.
Translation of foreign currencies	b.Translation of foreign currencies Substantially all expenditures and sales are made in U.S. dollars. Accordingly, the Company and its subsidiaries use the U.S. dollar as their functional and reporting currency.
Cash and cash equivalents	c.Cash and cash equivalents The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents.
Inventories	d.Inventories Materials and supplies inventories are valued at the lower of average cost or net realizable value. Cost includes applicable taxes and freight. The Company routinely counts and evaluates its material and supplies to determine the existence of any obsolete stock that is subject to impairment.
Mining properties, exploration and development costs	e. Mining properties, exploration and development costs The Company expenses general prospecting costs and the costs of acquiring and exploring unevaluated mineral properties. When a mineral property is determined to have proven and probable reserves, subsequent development costs are capitalized to mineral properties. For acquired mineral properties with proven and probable reserves, the Company capitalizes acquisition costs and subsequent development costs. When mineral properties are developed and operations commence, capitalized costs are charged to operations using the units-of-production method over proven and probable reserves. Upon abandonment or sale of a mineral property, all capitalized costs relating to the specific property are written off in the period abandoned or sold and a gain or loss is recognized in the accompanying Consolidated Statements of Operations and Comprehensive Loss. As discussed in Note 1, the Company is considered an exploration stage company under the criteria set forth by the SEC since it has not yet demonstrated the existence of proven or probable reserves at any of the Company’s properties. As such, during the periods prior to November 2016 when the Company suspended mining and processing activities, the Company expensed costs as incurred related to extraction of mineralized material at the Velardeña Properties. On a quarterly basis the Company evaluates its exploration properties to determine if they meet the Company’s minimum requirements for continued evaluation. The rights to the properties that do not meet the minimum requirements are relinquished and the carrying values, if any, are written off and reflected in “Other operating income, net” on the accompanying Consolidated Statements of Operations and Comprehensive Loss.
Property, plant and equipment and long lived asset impairment	f.Property, plant and equipment and long lived asset impairment Buildings are depreciated using the straight–line method over the estimated useful lives of 30 to 40 years or the life of the mine whichever is shorter. Mining equipment and machinery, excluding the plant, are depreciated using the straight-line method over useful lives of three to eight years or the lease period, whichever is shorter. Mineral properties and the plant are depreciated using units of production based on estimated mineralized material. Other furniture and equipment are depreciated using the straight-line method over estimated useful lives of three to five years. As discussed above, the Company does not have any properties with proven or probable reserves. Property, plant and equipment are recorded at cost and per the guidance of ASC 360 the Company assesses the recoverability of its property, plant and equipment, including goodwill, whenever events or changes in circumstances indicate that the carrying value of the assets may not be recoverable. If the sum of estimated future net cash flows on an undiscounted basis is less than the carrying amount of the related asset, impairment is considered to exist. The related impairment loss is measured by comparing estimated future net cash flows on a discounted basis or by comparing other market indicators to the carrying amount of the asset. The Company evaluated its remaining long lived assets at December 31, 2019 and 2018, and determined that no impairment was required.
Asset Retirement Obligations	g.Asset Retirement Obligations The Company records asset retirement obligations (“ARO”) in accordance with ASC 410, “Asset Retirement and Environmental Obligations” (“ASC 410”), which establishes a uniform methodology for accounting for estimated reclamation and abandonment costs. According to ASC 410, the fair value of an ARO is recognized in the period in which it is incurred if a reasonable estimate of fair value can be made. An offsetting asset retirement cost (“ARC”) is capitalized as part of the carrying value of the assets with which it is associated, and depreciated over the useful life of the asset (see Note 13). The Company prepares estimates of the timing and amount of expected cash flows when an ARO is incurred. The fair value of the ARO is measured by discounting the expected cash flows using a discount rate that reflects the credit adjusted risk-free rate of interest. The Company records the fair value of an ARO when it is incurred and layer adjustments of the ARO are recorded as an adjustment to the corresponding ARC. The ARO is adjusted to reflect the passage of time (accretion cost) calculated by applying the discount rate implicit in the initial fair value measurement to the beginning-of-period carrying amount of the ARO. The Company records accretion costs to expense as incurred.
Value Added Taxes	h.Value Added Taxes The Company pays value added tax (“VAT”) in Mexico as well as other countries, primarily related to exploration projects. The amounts are generally charged to expense as incurred because of the uncertainty of recoverability.
Stock compensation	jStock compensation Stock based compensation costs are recognized per the guidance of ASC 718, “Compensation — Stock Compensation” (“ASC 718”), using a graded vesting attribution method whereby costs are recognized over the requisite service period for each separately vesting portion of the award (see Note 17). Stock grants are valued at their grant date at fair value which in the case of options requires the use of the Black-Scholes option pricing model. Per ASC 718 the grants may be classified as equity grants or liability grants depending on the terms of the grant.
Leases	k.Leases Effective January 1, 2019 the Company adopted ASU 2016-02 and ASU No. 2018-11, which requires lessees to recognize a right-of-use asset and a lease liability for all leases with terms greater than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement (see Note 5).
Net income (loss) per Share of Common Stock	l.Net income (loss) per Share of Common Stock Basic income (loss) per share is computed by dividing net income (loss) available to holders of the Company’s Common Stock by the weighted average number of shares of Common Stock outstanding for the period. Diluted income (loss) per share reflects the potential dilution that would occur if securities or other contracts to issue Common Stock were exercised or converted into Common Stock. At December 31, 2019 and 2018, all potentially dilutive shares were excluded from the computation of diluted earnings per share because to include them would have been anti-dilutive.
Comprehensive Income (Loss)	m.Comprehensive Income (Loss) Comprehensive income (loss) is defined as all changes in equity (deficit), exclusive of transactions with stockholders, such as capital investments. Comprehensive income (loss) includes net income (loss) and changes in certain assets and liabilities that are reported directly in equity. During the first quarter 2018 the Company adopted ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”), which amended its accounting treatment for the recognition, measurement, presentation and disclosure of certain financial assets. ASU 2016-01 requires equity investments that have a readily determinable fair value to be measured at fair value through net income. Previously, entities would recognize changes in fair value of available-for-sale equity securities in other comprehensive income and would recognize in net income impairment losses that were other-than-temporary. There will no longer be an available-for-sale classification (with changes in fair value reported in other comprehensive income) for equity securities with readily determinable fair values. The Company recognized retrospectively the cumulative effect of initially adopting ASU 2016-01 (see Note 5). Accordingly, the Company did not recognize any other comprehensive income or loss for the periods ended December 31, 2018 and 2019.
Income Taxes	n.Income Taxes The Company accounts for income taxes in accordance with the provisions of ASC 740, “Income Taxes” (“ASC 740”), on a tax jurisdictional basis. The Company files United States and certain other foreign country income tax returns, and pays taxes reasonably determined to be due. The tax rules and regulations in these countries are highly complex and subject to interpretation. The Company’s income tax returns are subject to examination by the relevant taxing authorities and in connection with such examinations, disputes can arise with the taxing authorities over the interpretation or application of certain tax rules within the country involved. In accordance with ASC 740, the Company identifies and evaluates uncertain tax positions, and recognizes the impact of uncertain tax positions for which there is a less than more-likely-than-not probability of the position being upheld when reviewed by the relevant taxing authority. Such positions are deemed to be unrecognized tax benefits and a corresponding liability is established on the balance sheet. The Company classifies income tax related interest and penalties as income tax expense.
Recently Adopted Standards	o.Recently Adopted Standards During the first quarter 2019 the Company adopted ASU 2016-02, “Leases” (“ASU 2016-02”) and ASU No. 2018-11 “Leases (Topic 842)” (“ASU 2018-11”), which require lessees to recognize a right-of-use asset and a lease liability for all leases with terms greater than twelve months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the income statement. For a lessor, the accounting applied is largely unchanged from previous guidance. The Company currently leases administrative offices in the U.S. and in several foreign locations under lease agreements that typically exceed one year. The Company has elected the modified retrospective method of adopting ASU 2016-02 (see Note 5). During the first quarter 2018 the Company adopted ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”), which amended its accounting treatment for the recognition, measurement, presentation and disclosure of certain financial assets. ASU 2016-01 requires equity investments that have a readily determinable fair value to be measured at fair value through net income. Previously, entities would recognize changes in fair value of available-for-sale equity securities in other comprehensive income and would recognize in net income impairment losses that were other-than-temporary. There will no longer be an available-for-sale classification (with changes in fair value reported in other comprehensive income) for equity securities with readily determinable fair values. The Company recognized retrospectively the cumulative effect of initially adopting ASU 2016-01 (see Note 5). During the first quarter 2018 the Company adopted ASU 2016-08, “Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)” (“ASU 2016-08”), which clarifies principal versus agent when another party, along with the entity, is involved in providing a good or service to a customer. Topic 606, Revenue from Contracts with Customers, requires an entity to determine whether the nature of its promise is to provide that good or service to the customer (i.e., the entity is a principal) or to arrange for the good or service to be provided to the customer by the other party (i.e., the entity is an agent). The adoption of ASU 2016-08 during the first quarter 2018, did not result in a material impact on its consolidated financial position or results of operations or the requirement for retrospective reporting. During the first quarter 2018 the Company adopted ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”) which was issued by the Financial Accounting Standards Board (“FASB”) in May 2014. The Company also adopted ASU No. 2017-05, “Other Income (Subtopic 310-20)” (“ASU 2017-05”), which was issued by the FASB in February 2017 clarifying the scope of Subtopic 610-20, which was originally issued as part of ASU 2014-09. ASU 2014-09 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. In addition, the guidance requires improved disclosures to help users of financial statements better understand the nature, amount, timing and uncertainty of revenue that is recognized and the related cash flows. The Company has elected the modified retrospective method of adopting ASU 2014 (see Note 5).
Recently Issued Pronouncements	p.Recently Issued Pronouncements In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). ASU 2016-13 modifies the impairment model to utilize an expected loss methodology in place of the currently used incurred loss methodology, which will result in the more timely recognition of losses. ASU 2016-13 will be effective for the Company as of January 1, 2020. As the Company’s principle credit risk is related to its Lease Receivables the Company does not expect the adoption of this update to result in a material impact on its consolidated financial position or results of operations.