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INVESTMENTS
12 Months Ended
Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]  
INVESTMENTS INVESTMENTS
As of December 31, 2020, investments were comprised of the following:
Amortized Cost

Unrealized GainsUnrealized LossesFair Value
Commercial paper$35,543 $21 $(5)$35,559 
Corporate bonds191,977 608 (12)192,573 
U.S. Government agencies52,328 22 (20)52,330 
Total$279,848 $651 $(37)$280,462 
As of December 31, 2020, all marketable securities held by the Company had remaining contractual maturities of three years or less.
As of December 31, 2020, the marketable securities in a loss position have a maturity of one to three years.
There have been no impairments of the Company’s assets measured and carried at fair value during the year ended December 31, 2020.
As of December 31, 2019, the Company did not hold any investments.