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Marketable Securities
 6 Months Ended
Jun. 30, 2017
Marketable Securities  
Marketable Securities

 

(4)  Marketable Securities

 

The following tables summarize our marketable securities, classified as available-for-sale:

 

 

 

Amortized
Cost

 

Gross
Unrealized
Gains

 

Gross
Unrealized
Losses

 

Fair Value

 

 

 

(In thousands)

 

June 30, 2017

 

 

 

 

 

 

 

 

 

Marketable securities

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
18,253

 

$
7

 

$
(6

)

$
18,254

 

Maturing after one year through three years

 

—

 

—

 

—

 

—

 

 

 

 

 

 

 

 

 

 

 

Total U.S. government and municipal obligations

 

$
18,253

 

$
7

 

$
(6

)

$
18,254

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate debt securities

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
69,588

 

$
2

 

$
(22

)

$
69,568

 

Maturing after one year through three years

 

—

 

—

 

—

 

—

 

 

 

 

 

 

 

 

 

 

 

Total corporate debt securities

 

$
69,588

 

$
2

 

$
(22

)

$
69,568

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total marketable securities

 

$
87,841

 

$
9

 

$
(28

)

$
87,822

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2016

 

 

 

 

 

 

 

 

 

Marketable securities

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
52,754

 

$
5

 

$
(12

)

$
52,747

 

Maturing after one year through three years

 
296

 
8

 

—

 
304

 

 

 

 

 

 

 

 

 

 

 

Total U.S. government and municipal obligations

 

$
53,050

 

$
13

 

$
(12

)

$
53,051

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate debt securities

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
94,320

 

$

—

 

$
(56

)

$
94,264

 

Maturing after one year through three years

 

—

 

—

 

—

 

—

 

 

 

 

 

 

 

 

 

 

 

Total corporate debt securities

 

$
94,320

 

$

—

 

$
(56

)

$
94,264

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total marketable securities

 

$
147,370

 

$
13

 

$
(68

)

$
147,315

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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, 2017. Marketable securities include $0.4 million and $0.6 million in accrued interest at June 30, 2017 and December 31, 2016, respectively.