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Marketable Securities (Tables)
 9 Months Ended
Sep. 30, 2021
Marketable Securities [Abstract]  
Schedule of Marketable Securities

Our investments in marketable securities are classified as available-for-sale and consist of the following:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

September 30, 2021

(In thousands)

 

Cost

 

Unrealized
Gains

 

Unrealized
Losses

 

Fair Value

Short-Term

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and agency obligations

 

$

3,278

 

 

$

18

 

 

$

—

 

$

3,296

 

Corporate debt securities and certificates of deposit

 

3,475

 

 

11

 

 

—

 

3,486

 

Asset backed securities
127

2

—

129

Marketable securities – short-term

 

$

6,880

 

 

$

31

 

 

$

—

 

$

6,911

 

Long-Term

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and agency obligations

 

$

9,077

 

 

$

17

 

 

$

(9

 )

 

$

9,085

 

Corporate debt securities and certificates of deposit 

 

3,755

 

 

20

 

 

(2

 )

 

3,773

 

Asset backed securities

 

2,675

 

 

17

 

 

(1

 )

 

2,691

 

Equity security

 

42

 

 

2

 

 

—

 

44

 

Marketable securities – long-term

 

$

15,549

 

 

$

56

 

 

$

(12

 )

 

$

15,593

 






 

December 31, 2020

(In thousands)

 

Cost

 

Unrealized
Gains

 

Unrealized
Losses

 

Fair Value

Short-Term

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and agency obligations

 

$

4,817

 

 

$

36

 

 

$

—

 

$

4,853

 

Corporate debt securities and certificates of deposit

 

3,113

 

 

21

 

 

—

 

3,134

 

Asset backed securities

 

133

 

 

1

 

 

—

 

 

134

 

  Marketable securities – short-term

 

$

8,063

 

 

$

58

 

 

$

—

 

$

8,121

 

Long-Term

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and agency obligations

 

$

7,529

 

 

$

66

 

 

$

—

 

$

7,595

 

Corporate debt securities and certificates of deposit

 

3,975

 

 

61

 

 

(1

 )

 

4,035

 

Asset backed securities

 

2,347

 

 

45

 

 

—

 

2,392

 

Equity security

 

42

 

 

—

 

 

(12

)

 

30

 

Marketable securities – long-term

 

$

13,893

 

 

$

172

 

 

$

(13

 )

 

$

14,052

 

Schedule of Unrealized Loss Position

At September 30, 2021 and December 31, 2020, investments in marketable debt securities in an unrealized loss position were as follows:  

 
 
 
 

 
In Unrealized Loss Position For
Less Than 12 Months 
 
 In Unrealized Loss Position For
Greater Than 12 Months
(In thousands) 
 
Fair Value
 
Gross Unrealized
Losses
 
Fair Value
 
Gross Unrealized
Losses
September 30, 2021












   U.S. government and agency obligations

$
5,275


$
(9
 )

$
—


$
—

   Corporate debt securities and certificates of deposit

1,247


(1
 )

226


(1
 )
   Asset backed securities

934


(1
 )

—


—

      Marketable securities

$
7,456


$
(11
 )

$
226


$
(1
 )
December 31, 2020
 
 

 
 

 
 

 
 

U.S. government and agency obligations
 
$
330

 
$
—
 
$
—
 
$
—
Corporate debt securities and certificates of deposit
 
411

 
(1
 )
 
—
 
—
Marketable securities
 
$
741

 
$
(1
 )
 
$
—
 
$
—