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FAIR VALUE ACCOUNTING | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Fair Value Accounting | INVESTMENTS ACCOUNTED FOR AT FAIR VALUEInvestments accounted for at fair value includes the Company’s 16.5% investment in Virginia Uranium, Inc. and were $0.78 million and $0.65 million at December 31, 2020 and 2019, respectively.FAIR VALUE ACCOUNTING Assets and liabilities measured at fair value on a recurring basis The following tables set forth the fair value of the Company’s assets and liabilities measured at fair value on a recurring basis (at least annually) by level within the fair value hierarchy as of December 31, 2020. As required by accounting guidance, assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Fair value accounting utilizes 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 and 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). Our financial instruments include cash and cash equivalents, restricted cash, accounts receivable, accounts payable and current accrued liabilities. These instruments are carried at cost, which approximates fair value due to the short-term maturities of the instruments. Allowances for doubtful accounts are recorded against the accounts receivable balance to estimate net realizable value. The fair value of the Company’s Convertible Debentures are measured at fair value based on the closing price on the TSX (a Level 1 measurement) and changes are recognized in other income (expense). The Company’s investments in marketable equity securities which are exchange traded and are valued using quoted market prices in active markets and as such are classified within Level 1 of the fair value hierarchy. The Company’s investments are marketable debt securities which are exchange-traded and are valued using quoted prices of a pricing service and such are classified within Level 2 of the fair value hierarchy. The Company’s warrants are classified as liabilities. The warrants are subject to re-measurement at each balance sheet date, with any change in fair value recognized as a component of other income (expense), in the statements of operations. The warrants issued in September 2016 are classified as Level 1 under the fair value hierarchy using quoted market prices in active markets. The warrants issued in March 2016 are classified as Level 3 under the fair value hierarchy as they are valued with Level 3 (Level 3 fair value is determined using the entity’s own assumptions about the inputs that market participants would use in pricing an asset or liability) inputs and the Black-Scholes option model. As of December 31, 2020 and 2019, the fair values of cash and cash equivalents, restricted cash, short-term deposits, receivables, accounts payable and accrued liabilities approximate their carrying values because of the short-term nature of these instruments.
December 31, 2020 | Level 1 |  | Level 2 |  | Level 3 |  | Total
Investments accounted for at fair value | $ | 779 |  |  | $ | — |  |  | $ | — |  |  | $ | 779 |
Marketable equity securities (Note 4) | 2,247 |  |  | — |  |  | — |  |  | 2,247 |
Warrant liabilities (Note 12) | (8,573) |  |  | — |  |  | — |  |  | (8,573) |
| $ | (5,547) |  |  | $ | — |  |  | $ | — |  |  | $ | (5,547) |
December 31, 2019 | Level 1 |  | Level 2 |  | Level 3 |  | Total
Investments accounted for at fair value | $ | 654 |  |  | $ | — |  |  | $ | — |  |  | $ | 654 |
Marketable equity securities (Note 4) | 630 |  |  | — |  |  | — |  |  | 630 |
Marketable debt securities (Note 4) | — |  |  | 4,208 |  |  | — |  |  | 4,208 |
Warrant liabilities (Note 12) | (2,791) |  |  | — |  |  | — |  |  | (2,791) |
Convertible Debentures (Note 11) | (16,382) |  |  | — |  |  | — |  |  | (16,382) |
| $ | (17,889) |  |  | $ | 4,208 |  |  | $ | — |  |  | $ | (13,681) |
There were no transfers into or out of Level 3 during the year ended December 31, 2020.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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