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Marketable Securities (Tables)
 12 Months Ended
Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]  
Schedule of Available-for-sale Securities
The following table summarizes the marketable securities held as of December 31, 2019 and 2018 (in thousands):
 December 31, 2019
Amortized Cost
 
Gross Unrealized Gain
 
Gross Unrealized (Loss)
 
Fair Value
U.S. Government Sponsored Agencies
$
4,941

 
$
—

 
$
(391
)
 
$
4,550



 December 31, 2018
Amortized Cost
 
Gross Unrealized Gain
 
Gross Unrealized (Loss)
 
Fair Value
U.S. Government Sponsored Agencies
$
4,941

 
$
—

 
$
—

 
$
4,941