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FAIR VALUE ACCOUNTING (Tables)
3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring
As of March 31, 2021, 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$2,254 $— $— $2,254 
Marketable equity securities1,407 — — 1,407 
Warrant liabilities(11,571)— — (11,571)
$(7,910)$— $— $(7,910)