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Marketable Securities (Tables)
9 Months Ended
Sep. 30, 2019
Investments Debt And Equity Securities [Abstract]  
Fair Value of Available for Sale Marketable Securities

At September 30, 2019 and December 31, 2018, the fair value of marketable securities, which were all classified as available for sale, included the following (in thousands):

 

 

 

September 30, 2019

 

 

 

Adjusted

Cost

 

 

Unrealized

Gains

 

 

Unrealized

Losses

 

 

Fair Value

 

Level 2:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate debt securities

 

$

34,905

 

 

$

11

 

 

$

(4

)

 

$

34,912

 

Government-sponsored enterprise debt securities

 

 

3,811

 

 

 

1

 

 

 

 

 

 

3,812

 

Total

 

$

38,716

 

 

$

12

 

 

$

(4

)

 

$

38,724

 

 

 

 

December 31, 2018

 

 

 

Adjusted

Cost

 

 

Unrealized

Gains

 

 

Unrealized

Losses

 

 

Fair Value

 

Level 2:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate debt securities

 

$

31,521

 

 

$

 

 

$

(23

)

 

$

31,498

 

Government-sponsored enterprise debt securities

 

 

2,999

 

 

 

 

 

 

 

 

 

2,999

 

Total

 

$

34,520

 

 

$

 

 

$

(23

)

 

$

34,497