XML 19 R9.htm IDEA: XBRL DOCUMENT v3.8.0.1
Marketable Securities
 9 Months Ended
Sep. 30, 2017
Marketable Securities  
Marketable Securities

(4)  Marketable Securities

 

The following is a summary of marketable securities, classified as available-for-sale:

 

 

 

Amortized
Cost

 

Gross
Unrealized
Gains

 

Gross
Unrealized
Losses

 

Fair Value

 

 

 

(In thousands)

 

September 30, 2017

 

 

 

 

 

 

 

 

 

Marketable securities

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
13,725

 

$
5

 

$
(3

)

$
13,727

 

Maturing after one year through three years

 

—

 

—

 

—

 

—

 

 

 

 

 

 

 

 

 

 

 

Total U.S. government and municipal obligations

 

$
13,725

 

$
5

 

$
(3

)

$
13,727

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Corporate debt securities

 

 

 

 

 

 

 

 

 

Maturing in one year or less

 

$
72,078

 

$
3

 

$
(13

)

$
72,068

 

Maturing after one year through three years

 

—

 

—

 

—

 

—

 

 

 

 

 

 

 

 

 

 

 

Total corporate debt securities

 

$
72,078

 

$
3

 

$
(13

)

$
72,068

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Total marketable securities

 

$
85,803

 

$
8

 

$
(16

)

$
85,795

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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 Company holds investment grade marketable securities and none were considered to be other-than-temporarily impaired as of September 30, 2017. Marketable securities include $0.3 million and $0.6 million in accrued interest at September 30, 2017 and December 31, 2016, respectively.