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INVESTMENTS ACCOUNTED FOR AT FAIR VALUE
12 Months Ended
Dec. 31, 2020
Fair Value Disclosures [Abstract]  
INVESTMENTS ACCOUNTED FOR AT FAIR VALUE 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, 2020Level 1Level 2Level 3Total
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, 2019Level 1Level 2Level 3Total
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.