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Marketable Securities (Tables)
 3 Months Ended
Mar. 31, 2021
Marketable Securities [Abstract]  
Schedule of Marketable Securities

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

March 31, 2021

(In thousands)

 

Cost

 

Unrealized
Gains

 

Unrealized
Losses

 

Fair Value

Short-Term

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and agency obligations

 

$

4,750

 

 

$

30

 

 

$

—

 

$

4,780

 

Corporate debt securities and certificates of deposit

 

3,746

 

 

24

 

 

—

 

3,770

 

Asset backed securities

 

130

 

 

—

 

 

—

 

130

 

Marketable securities – short-term

 

$

8,626

 

 

$

54

 

 

$

—

 

$

8,680

 

Long-Term

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and agency obligations

 

$

7,704

 

 

$

42

 

 

$

(5

 )

 

$

7,741

 

Corporate debt securities and certificates of deposit

 

3,470

 

 

34

 

 

(2

 )

 

3,502

 

Asset backed securities

 

2,263

 

 

34

 

 

—

 

2,297

 

Equity security

 

42

 

 

5

 

 

—

 

47

 

Marketable securities – long-term

 

$

13,479

 

 

$

115

 

 

$

(7

 )

 

$

13,587

 






 

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 March 31, 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
March 31, 2021












   U.S. government and agency obligations

$
3,637


$
(5
 )

$
—


$
—

   Corporate debt securities and certificates of deposit

1,455


(2
 )

—


—

   Asset backed securities

120


—

—


—

      Marketable securities

$
5,212


$
(7
 )

$
—


$
—

December 31, 2020
 
 

 
 

 
 

 
 

U.S. government and agency obligations
 
$
330

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

 
(1
 )
 
—
 
—
Marketable securities
 
$
741

 
$
(1
 )
 
$
—
 
$
—