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FAIR VALUE ACCOUNTING (Tables)
9 Months Ended
Sep. 30, 2020
Fair Value Disclosures [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring
As of September 30, 2020, 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.
Level 1Level 2Level 3Total
Investments at fair value$566 $— $— $566 
Marketable equity securities1,036 — — 1,036 
Marketable debt securities— 502 — 502 
Warrant liabilities(2,499)— — (2,499)
Convertible Debentures(7,898)— — (7,898)
$(8,795)$502 $— $(8,293)