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Marketable Securities
9 Months Ended
Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]  
Marketable Securities Marketable Securities

Immunomedics considers all of its current investments to be available-for-sale. Marketable securities at September 30, 2019, consisted of the following (in thousands):
 
Amortized
Cost
 
Gross
Unrealized
Gain
 
Gross
Unrealized
(Loss)
 
Fair Value
U.S. Government Sponsored Agencies
$
4,941

 
$

 
$
(391
)
 
$
4,550


 
Maturities of debt securities classified as available-for-sale were as follows at September 30, 2019 (in thousands):
 
Fair Value
 
Net Carrying
Amount
Due after one year through five years
$
4,550

 
$
4,562

 

Marketable securities at December 31, 2018 consisted of the following (in thousands):
 
Amortized
Cost
 
Gross
Unrealized
Gain
 
Gross
Unrealized
(Loss)
 
Fair Value
U.S. Government Sponsored Agencies
$
4,941

 
$

 
$

 
$
4,941

 

Maturities of debt securities classified as available-for-sale were as follows at December 31, 2018 (in thousands):
 
Fair Value
 
Net Carrying
Amount
Due after one year through five years
$
4,941

 
$
4,954