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Marketable Securities (Tables)
12 Months Ended
Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]  
Available-For-Sale Securities
Available-for-sale marketable securities as of December 31, 2019 and 2018 were as follows (in thousands):
December 31, 2019
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Government-sponsored enterprises$13,216  $ $—  $13,222  
Corporate debt securities76,052  20  (10) 76,062  
Total$89,268  $26  $(10) $89,284  

December 31, 2018
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Corporate debt securities$12,738  $—  $(3) $12,735  
All of the Company's available-for-sale securities held at December 31, 2019 and 2018 had maturity dates of less than one year.