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Marketable Securities (Tables)
 3 Months Ended
Mar. 31, 2020
Marketable Securities  
Summary of marketable debt securities, classified as available-for-sale

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gross Unrealized

 

 

Amortized

 

 

 

 

 

 

 

Fair

 

    

Cost

    

Gains

    

Losses

    

Value

 

 

(In thousands)

March 31, 2020

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations (maturing in one year or less)

 

$

10,538

 

$

16

 

$

 —

 

$

10,554

Corporate debt securities (maturing in one year or less)

 

 

20,459

 

 

 —

 

 

(15)

 

 

20,444

Total Marketable Securities

 

$

30,997

 

$

16

 

$

(15)

 

$

30,998

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31,2019

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations (maturing in one year or less)

 

$

18,509

 

$

13

 

$

 —

 

$

18,522

Corporate debt securities (maturing in one year or less)

 

 

34,619

 

 

13

 

 

(3)

 

 

34,629

Total Marketable Securities

 

$

53,128

 

$

26

 

$

(3)

 

$

53,151