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Marketable Securities
 6 Months Ended
Jun. 30, 2016
Marketable Securities  
Marketable Securities

(6)  Marketable Securities

 

A summary of marketable securities is shown below:

 

 

 

Amortized
Cost

 

Gross
Unrealized
Gains

 

Gross
Unrealized
Losses

 

Fair Value

 

 

 

(In thousands)

 

June 30, 2016

 

 

 

 

 

 

 

 

 

Marketable securities

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
63,618

 

$
63

 

$

—

 

$
63,681

 

Maturing after one year through three years

 
5,382

 
21

 

—

 
5,403

 

 

 

 

 

 

 

 

 

 

 

Total U.S. government and municipal obligations

 

$
69,000

 

$
84

 

$

—

 

$
69,084

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate debt securities

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
115,497

 

$
47

 

$
(10

)

$
115,534

 

Maturing after one year through three years

 
3,022

 
6

 

—

 
3,028

 

 

 

 

 

 

 

 

 

 

 

Total corporate debt securities

 

$
118,519

 

$
53

 

$
(10

)

$
118,562

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total marketable securities

 

$
187,519

 

$
137

 

$
(10

)

$
187,646

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2015

 

 

 

 

 

 

 

 

 

Marketable securities

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
48,871

 

$
4

 

$
(20

)

$
48,855

 

Maturing after one year through three years

 
15,940

 
24

 
(57

)
15,907

 

 

 

 

 

 

 

 

 

 

 

Total U.S. government and municipal obligations

 

$
64,811

 

$
28

 

$
(77

)

$
64,762

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate debt securities

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
129,327

 

$
2

 

$
(141

)

$
129,188

 

Maturing after one year through three years

 
23,932

 
1

 
(102

)
23,831

 

 

 

 

 

 

 

 

 

 

 

Total corporate debt securities

 

$
153,259

 

$
3

 

$
(243

)

$
153,019

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total marketable securities

 

$
218,070

 

$
31

 

$
(320

)

$
217,781

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The marketable securities held by the Company were high investment grade and there were no marketable securities that the Company considered to be other-than-temporarily impaired as of June 30, 2016. Marketable securities include $0.8 million and $1.5 million in accrued interest at June 30, 2016 and December 31, 2015, respectively.