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Marketable Securities (Tables)
6 Months Ended
Jun. 30, 2020
Marketable Securities [Abstract]  
Marketable Securities
Marketable securities as of June 30, 2020 and December 31, 2019 consisted of the following:
June 30, 2020Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Money market mutual funds$22,498  $—  $—  $22,498  
Total marketable securities designated as available-for-sale$22,498  $—  $—  $22,498  
 
December 31, 2019Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Money market mutual funds$29,907  $—  $—  $29,907  
Total marketable securities designated as available-for-sale$29,907  $—  $—  $29,907