XML 19 R9.htm IDEA: XBRL DOCUMENT v3.10.0.1
Marketable Securities
 9 Months Ended
Sep. 30, 2018
Marketable Securities  
Marketable Securities

(4) Marketable Securities

 

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gross Unrealized

 

 

Amortized

 

 

 

 

 

 

 

Fair

 

    

Cost

    

Gains

    

Losses

    

Value

 

 

(In thousands)

September 30, 2018

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations (maturing in one year or less)

 

$

22,318

 

$

 —

 

$

(7)

 

$

22,311

Corporate debt securities (maturing in one year or less)

 

 

50,491

 

 

 —

 

 

(7)

 

 

50,484

Total Marketable Securities

 

$

72,809

 

$

 —

 

$

(14)

 

$

72,795

 

 

 

 

 

 

 

 

 

 

 

 

 

December 31, 2017

 

 

 

 

 

 

 

 

 

 

 

 

U.S. government and municipal obligations (maturing in one year or less)

 

$

26,164

 

$

 3

 

$

(9)

 

$

26,158

Corporate debt securities (maturing in one year or less)

 

 

73,007

 

 

 1

 

 

(27)

 

 

72,981

Total Marketable Securities

 

$

99,171

 

$

 4

 

$

(36)

 

$

99,139

 

The Company holds investment-grade marketable securities, and none were in a continuous unrealized loss position for more than twelve months as of September 30, 2018 and December 31, 2017. The unrealized losses are attributable to changes in interest rates and the Company does not believe any unrealized losses represent other-than-temporary impairments.

 

Marketable securities include $0.1 million and $0.3 million in accrued interest at September 30, 2018 and December 31, 2017, respectively.