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Business and Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Business and Summary of Significant Accounting Policies

1. Business and Summary of Significant Accounting Policies

Business and company formation

Solitario Zinc Corp.(formerly Solitario Exploration & Royalty Corp., “Solitario,” “Company”) is an exploration stage company as defined in Industry Guide 7, as issued by the United States Securities and Exchange Commission (“SEC”). Solitario was incorporated in the state of Colorado on November 15, 1984 as a wholly-owned subsidiary of Crown Resources Corporation ("Crown"). In July 1994, Solitario became a publicly traded company on the Toronto Stock Exchange (the "TSX") through its initial public offering. Solitario has been actively involved in mineral exploration since 1993. Solitario’s primary business is to acquire exploration mineral properties or royalties and/or discover economic deposits on its mineral properties and advance these deposits, either on its own or through joint ventures, up to the development stage. At that point, or sometime prior to that point, Solitario would likely attempt to sell its mineral properties, pursue their development either on its own, or through a joint venture with a partner that has expertise in mining operations, or create a royalty with a third party that continues to advance the property. As a result of the Acquisition (defined below under “Recent Developments”), Solitario is now primarily focused on the acquisition and exploration of zinc-related exploration mineral properties. In addition to focusing on its mineral exploration properties and the evaluation of mineral properties for acquisition or purchase of royalty interests, Solitario also evaluates potential strategic corporate transactions for the potential acquisition of new precious and base metal properties and assets with exploration potential or business combinations that Solitario determines to be favorable to Solitario.

Solitario has recorded revenue in the past from the sale of mineral property, including the sale of its former interest in Mount Hamilton LLC (“MHLLC”) the owner of its former Mt. Hamilton project (the “Mt. Hamilton Transaction”), and joint venture property payments and the sale of a royalty on its former Mt. Hamilton project. Revenues from the sale or joint venture of properties, although significant when they occur, have not been a consistent annual source of revenue and would only occur in the future, if at all, on an infrequent basis.

Solitario currently considers its carried interest in the Florida Canyon project and its interest in the Lik project (acquired in the Acquisition) to be its core mineral property assets. Solitario’s joint venture partner is expected to continue the development and furtherance of the Florida Canyon project and Solitario will monitor progress at Florida Canyon. Solitario is currently evaluating the exploration and development plans for the Lik project.

As of December 31, 2017, Solitario has significant balances of cash and short-term investments that Solitario anticipates using, in part, to further the development of the Lik project and to potentially acquire additional mineral property assets. The fluctuations in precious metal and other commodity prices has contributed to a challenging environment for mineral exploration and development, which has created opportunities as well as challenges for the potential acquisition of early-stage and advanced mineral exploration projects or other related assets at potentially attractive terms.

Financial reporting

The consolidated financial statements include the accounts of Solitario and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("generally accepted accounting principles"), and are expressed in US dollars.

Recent developments

Purchase of Zazu

On July 12, 2017, Solitario completed the acquisition of Zazu Metals Corp. (“Zazu”) pursuant to a definitive arrangement agreement between Solitario and Zazu (the "Arrangement Agreement") whereby Solitario agreed to acquire all of the issued and outstanding common shares of Zazu (the "Zazu Shares") by way of a statutory plan of arrangement (the "Arrangement") under the Canada Business Corporations Act (the “Acquisition”). The Arrangement was approved by the Ontario (Canada) Superior Court of Justice on July 7, 2017. Per the Arrangement, Solitario issued 19,788,177 shares of its common stock on July 12, 2017 in exchange for all of the issued and outstanding Zazu Shares, which represented 0.3572 shares of Solitario common stock for each outstanding Zazu Share. Solitario granted stock options to acquire an aggregate of 1,782,428 shares of Solitario common stock to Zazu option holders the (“Replacement Options”) in connection with the Acquisition. The total purchase price of $16,110,000, recorded during the year ended December 31, 2017, is detailed below. Results of operations for Zazu are included in Solitario’s consolidated financial statements from the date of the Acquisition.

(in thousands)	July 12,
	2017
Issuance of 19,788,177 share of Solitario common stock	$13,654
Replacement options	164
Investment banking and transaction costs	782
Convertible debenture due Solitario, cancelled	1,510
Total purchase price	$16,110

The Acquisition was treated as an asset purchase in accordance with Accounting Standards Update (“ASU”) No. 2017-01, “Business Combinations,” (“ASU 2017-01”). Solitario adopted the provisions of ASU 2017-01 during the year ended December 31, 2017, which provides guidance on the classification of the treatment of business acquisitions as either the purchase of an asset or the purchase of a business. See “Recent Accounting Pronouncements, below. Accordingly, as the purchase of an asset (essentially the interest in the Lik project in Alaska) Solitario capitalized related transaction costs associated with the Acquisition, including the following costs:

(in thousands)	July 12,
	2017
Investment banking fees	$552
Legal and accounting costs	196
Other costs and fees	34
Total capitalized transaction costs	$782

The purchase price was allocated to assets and liabilities acquired from Zazu on the date of the Acquisition as follows:

(in thousands)	July 12,
	2017
Cash	$974
Other current assets	42
Equipment	100
Mineral property	15,611
Accounts payable	(492)
Asset retirement obligation – Lik	(125)
Total purchase price	$16,110

The transaction costs less the cash acquired are shown as the cash transaction costs for the year ended December 31, 2017 on the consolidated statement of cash flows. Solitario also incurred stock issuance costs of $117,000, related to the Acquisition, which were charged to equity.

Name Change to Solitario Zinc Corp.

Solitario shareholders voted an annual meeting of shareholders held on June 29, 2017 in favor of an amendment to Solitario’s Articles of Incorporation to change Solitario’s name to “Solitario Zinc Corp.” from “Solitario Exploration & Royalty Corp.” The name change was subject to the completion of the Acquisition and became effective on July 17, 2017.

Convertible Debenture Financing

On April 26, 2017, concurrent with the signing of the Arrangement Agreement, Solitario provided Zazu interim debt financing through a secured convertible debenture issued by Zazu in the principal amount of US$1.5 million (the "Debenture". Upon completion of the Acquisition, the Debenture, including accrued interest, was cancelled.

Revenue recognition

Solitario records delay rental payments as revenue in the period received. Any payments received for the sale of property interests are recorded as a reduction of the related property's capitalized cost. Proceeds which exceed the capitalized cost of the property without reserves are recognized as revenue. Payments received on the sale of properties with reserves are recognized as revenue to the extent the proceeds exceed the proportionate basis in the assets sold. There were no delay rental payments in either 2017 or 2016.

Use of estimates

The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Some of the more significant estimates included in the preparation of Solitario's financial statements pertain to: (i) Solitario’s carrying value of short-term investments; (ii) the recoverability of mineral properties related to its mineral exploration properties and their future exploration potential; (iii) the fair value of stock option grants to employees; (iv) the ability of Solitario to realize its deferred tax assets; and (v) Solitario's investment in marketable equity securities.

In performing its activities, Solitario has incurred certain costs for mineral properties. The recovery of these costs is ultimately dependent upon the sale of mineral property interests or the development of economically recoverable ore reserves and the ability of Solitario to obtain the necessary permits and financing to successfully place the properties into production, and upon future profitable operations, none of which is assured.

Cash and cash equivalents

Cash equivalents include investments in highly liquid money-market securities with original maturities of three months or less when purchased. As of December 31, 2017, approximately $168,000 of Solitario’s cash and cash equivalents are held in brokerage accounts and foreign banks, which are not covered under the Federal Deposit Insurance Corporation (“FDIC”) rules for the United States.

Short-term investments

As of December 31, 2017, Solitario has $10,395,000 of Solitario’s current assets in United States Treasury securities (“USTS”) with maturities of 15 days to eighteen months. The USTS are recorded at their fair value, based upon quoted market prices. As of December 31, 2017 Solitario has $1,247,000 in separate bank certificates of deposit (“CDs”) each with a maximum value of $250,000, and each of which are covered by Federal Deposit Insurance Corporation insurance to the full face value of the CDs. At December 31, 2017, the CDs have maturities of between seven and fifteen months. Solitario’s short-term investments are recorded at their fair value, based upon quoted market prices. The short-term investments are highly liquid and may be sold in their entirety at any time at their quoted market price and are classified as a current asset.

Mineral properties

Solitario expenses all exploration costs incurred on its mineral properties prior to the establishment of proven and probable reserves through the completion of a feasibility study. Initial acquisition costs of its mineral properties are capitalized. Solitario regularly performs evaluations of its investment in mineral properties to assess the recoverability and/or the residual value of its investments in these assets. All long-lived assets are reviewed for impairment whenever events or circumstances change which indicate the carrying amount of an asset may not be recoverable, utilizing established guidelines based upon undiscounted future net cash flows from the asset or upon the determination that certain exploration properties do not have sufficient potential for economic mineralization.

Derivative instruments

Solitario accounts for its derivative instruments in accordance with ASC 815, "Accounting for Derivative Instruments and Hedging Activities" (“ASC 815”). Solitario acquired its investment in Vendetta Mining Corp. (“Vendetta”) units, including the Vendetta Warrants (defined below) during 2016. During 2017, Solitario exercised all of its Vendetta Warrants and at December 31, 2017 has no Vendetta Warrants. Solitario classified the Vendetta Warrants as derivative instruments under ASC 815 and recorded the Vendetta Warrants at their fair value as other assets on the consolidated balance sheet at December 31, 2016. Changes in fair value of the Vendetta Warrants are recognized in the statement of operations in the period of change as gain or loss on derivative instruments. Solitario has entered into covered calls from time to time on its investment in Kinross marketable equity securities. Solitario has not designated its covered calls as hedging instruments and any changes in the fair value of the covered calls and its warrants are recognized in the statement of operations in the period of the change as gain or loss on derivative instruments.

Fair value

FASB ASC 820, “Fair Value Measurements and Disclosures” (“ASC 820”) establishes a framework for measuring fair value and requires enhanced disclosures about fair value measurements. ASC 820 clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. For certain of Solitario's financial instruments, including cash and cash equivalents and accounts payable, the carrying amounts approximate fair value due to their short-term maturities. Solitario's short-term investments in USTS and CDs, its marketable equity securities and any covered call options against those marketable equity securities are carried at their estimated fair value based on quoted market prices. Solitario’s investment in the Vendetta Warrants, at December 31, 2016 was carried at fair value as determined by a Black-Scholes model. See Note 7, “Fair Value of Financial Instruments,” below.

Marketable equity securities

Solitario's investments in marketable equity securities are classified as available-for-sale and are carried at fair value, which is based upon quoted prices of the securities owned. Solitario records investments in marketable equity securities as available-for-sale for investments in publicly traded marketable equity securities for which it does not exercise significant control and where Solitario has no representation on the board of directors of those companies and exercises no control over the management of those companies. The cost of marketable equity securities sold is determined by the specific identification method. Changes in fair value are recorded in accumulated other comprehensive income (loss) within shareholders' equity, unless a decline in fair value is considered other than temporary, in which case the decline is recognized as a loss in the consolidated statements of operations.

Foreign exchange

The United States dollar is the functional currency for all of Solitario's foreign subsidiaries. Although Solitario's South American exploration activities during 2017 and 2016 were conducted primarily in Peru, a portion of the payments for the land, leasehold and exploration agreements as well as certain exploration activities are denominated in United States dollars. Foreign currency gains and losses are included in the results of operations in the period in which they occur.

Income taxes

Solitario accounts for income taxes in accordance with ASC 740, “Accounting for Income Taxes” (“ASC 740”). Under ASC 740, income taxes are provided for the tax effects of transactions reported in the financial statements and consist of taxes currently due plus deferred taxes related to certain income and expenses recognized in different periods for financial and income tax reporting purposes. Deferred tax assets and liabilities represent the future tax return consequences of those differences, which will either be taxable or deductible when the assets and liabilities are recovered or settled. Deferred taxes are also recognized for operating losses and tax credits that are available to offset future taxable income and income taxes, respectively. A valuation allowance is provided if it is more likely than not that some portion or all of the deferred tax assets will not be realized.

Accounting for uncertainty in income taxes

ASC 740 clarifies the accounting for uncertainty in income taxes recognized in a company's financial statements. ASC 740 prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. ASC 740 also provides guidance on derecognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. ASC 740 provides that a company's tax position will be considered settled if the taxing authority has completed its examination, the company does not plan to appeal, and it is remote that the taxing authority would reexamine the tax position in the future. These provisions of ASC 740 had no effect on Solitario's financial position or results of operations. See Note 5, “Income Taxes,” below.

Earnings per share

The calculation of basic and diluted earnings (loss) per share is based on the weighted average number of shares of common stock outstanding during the years ended December 31, 2017 and 2016. Potentially dilutive shares, consisting of outstanding common stock options for 1,982,428 Solitario common shares, were excluded from the calculation of diluted earnings (loss) per share for the year ended December 31, 2017 because the effects were anti-dilutive. There were no similar potentially dilutive option securities outstanding at December 31, 2016, and accordingly there were no effects of potentially dilutive shares for the year ended December 31, 2016.

Employee stock compensation and incentive plans

Solitario classifies all of its stock options as equity options in accordance with the provisions of ASC 718, “Compensation – Stock Compensation.” See Note 9, “Employee Stock Compensation Plans,” below.

Recent accounting pronouncements

In May 2014, the FASB issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers (Topic 606), (“ASU No. 2014-09”), which amended the existing accounting standards for revenue recognition. ASU No. 2014-09 establishes principles for recognizing revenue upon the transfer of promised goods or services to customers, in an amount that reflects the expected consideration received in exchange for those goods or services. In July 2015, the FASB deferred the effective date for annual reporting periods beginning after December 15, 2017. The amendments may be applied retrospectively to each prior period (full retrospective) or retrospectively with the cumulative effect recognized as of the date of initial application (modified retrospective). Solitario will adopt ASU 2014-09 in the first quarter of 2018 and apply the full retrospective approach and does not expect the impact on its consolidated financial statements to be material.

In February 2016, the FASB issued ASU 2016-02, “Leases” (“ASU No. 2016-02”), which will require lessees to recognize a right-of-use asset and a lease liability for all leases that are not short-term in nature. For a lessor, the accounting applied is also largely unchanged from previous guidance. The new rules will be effective for Solitario in the first quarter of 2019. Solitario does not anticipate early adoption. Solitario does not expect the adoption of ASU No. 2016-02 to materially change its current accounting methods and therefore it does not expect the adoption to have a material impact on its consolidated financial position or results of operations.

In January 2016 the FASB issued ASU No 2016-01, Financial Instruments – Recognition and Measurement of Financial Assets and Financial Liabilities (Topic 825) (“ASU No. 2016-01”). ASU No. 2016-01 revises the classification and measurement of investment in certain equity investments and the presentation of certain fair value changes for certain financial liabilities measured at fair value. ASU No. 2016-01 requires the change in fair value of many equity investments to be recognized in net income. ASU No. 2016-01 is effective for interim and annual periods beginning after December 15, 2017, with early adoption permitted. Solitario will adopt ASU No. 2016-01 in the first quarter of 2018 which may result in a cumulative effect adjustment to the consolidated statement of equity retained earnings as of the beginning of the year in 2018. Solitario is evaluating the new guidance and has not determined the impact of ASU No. 2016-01 on its consolidated financial statements.

In March 2016, the FASB issued Accounting Standards Update (“ASU”) 2016-09, “Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”), which simplifies several aspects of the accounting for share-based payment award transactions including accounting for income taxes and classification of excess tax benefits on the statement of cash flows, forfeitures and minimum statutory tax withholding requirements. ASU 2016-09 is effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. The adoption of ASU 2016-09 in 2017 did not materially change the Solitario’s previous accounting methods and therefore did not have a material impact on Solitario’s consolidated financial position or results of operation.

On January 5, 2017, the Financial Accounting Standards Board issued ASU 2017-01. ASU 2017-01 clarified the definition of the acquisition of a business or an asset under Accounting Codification Standard 805 (“ASC 804”). ASU 2017-10 utilizes a series of tests or screens to determine if a business combination is the acquisition of a single identifiable asset or of a business. Under the definition of ASU 2017-01, the Acquisition would fall under the classification of the acquisition of an asset. ASU 2017-01 is effective for fiscal years beginning after December 15, 2017, with early adoption permitted. Solitario adopted the provisions of ASU 2017-01 during 2017, and has accounted for the Acquisition in accordance with the provisions of ASU 2017-01. The adoption of ASU 2017-01 had no other effect on Solitario’s consolidated financial position.

In February 2018, the FASB issued ASU No. 2018-02, “Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income.” ASU 2018-02 allows for a reclassification from accumulated other comprehensive income or loss to retained earnings or accumulated deficit for stranded tax effects resulting from the Tax Cuts and Jobs Act of 2017 (“TCJA”). ASU 2018-02 also requires certain related disclosures. ASU 2018-02 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018 and should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the TCJA is recognized. Early adoption is permitted. The Solitario is currently evaluating the impact of ASU 2018-02 but does not believe it will have a material effect on the Solitario’s financial position or results of operations.