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Marketable Securities
6 Months Ended
Jun. 30, 2018
Investments Debt And Equity Securities [Abstract]  
Marketable Securities

Note 3. Marketable Securities

The Company’s marketable securities consisted of the following:

 

 

June 30, 2018

 

 

Amortized

Cost Basis

 

 

Unrealized

Gains

 

 

Unrealized

Losses

 

 

Aggregate

Fair Value

 

 

(in thousands)

 

Marketable securities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Short-term

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   Money market accounts

$

206

 

 

$

 

 

$

 

 

$

206

 

   Commercial paper

 

895

 

 

 

 

 

 

 

 

 

895

 

   United States Treasury

 

899

 

 

 

 

 

 

 

 

 

899

 

   Corporate debt securities

 

25,237

 

 

 

1

 

 

 

(83

)

 

 

25,155

 

   Less: cash equivalents

 

(206

)

 

 

 

 

 

 

 

 

(206

)

      Total short-term marketable securities

 

27,031

 

 

 

1

 

 

 

(83

)

 

 

26,949

 

   Corporate debt securities

 

7,562

 

 

 

 

 

 

(102

)

 

 

7,460

 

      Total long-term marketable securities

 

7,562

 

 

 

 

 

 

(102

)

 

 

7,460

 

      Total marketable securities

$

34,593

 

 

$

1

 

 

$

(185

)

 

$

34,409

 

 

 

December 31, 2017

 

 

Amortized

Cost Basis

 

 

Unrealized

Gains

 

 

Unrealized

Losses

 

 

Aggregate

Fair Value

 

 

(in thousands)

 

Marketable securities:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Short-term

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   Money market accounts

$

723

 

 

$

 

 

$

 

 

$

723

 

   Corporate debt securities

 

20,040

 

 

 

2

 

 

 

(48

)

 

 

19,994

 

   Less: cash equivalents

 

(723

)

 

 

 

 

 

 

 

 

(723

)

      Total short-term marketable securities

 

20,040

 

 

 

2

 

 

 

(48

)

 

 

19,994

 

   Corporate debt securities

 

14,999

 

 

 

 

 

 

(116

)

 

 

14,883

 

      Total long-term marketable securities

 

14,999

 

 

 

 

 

 

(116

)

 

 

14,883

 

      Total marketable securities

$

35,039

 

 

$

2

 

 

$

(164

)

 

$

34,877

 

 

Management determined that the gross unrealized losses of $185,000 on the Company’s marketable securities as of June 30, 2018 were temporary in nature. Gross unrealized losses on the Company’s marketable securities were $164,000 as of December 31, 2017. The Company currently does not intend to sell these securities prior to maturity and does not consider these investments to be other-than-temporarily impaired as of June 30, 2018.