Marketable Securities (Tables)
12 Months Ended
Dec. 31, 2014
Investments in Marketable Securities  
Schedule of available-for-sale marketable securities and cash and cash equivalents

        Available-for-sale marketable securities and cash and cash equivalents consist of the following (in thousands):

                                                                                                                                                                                    

 

 

December 31, 2014

 

 

 

Amortized
Cost Value

 

Gross
Unrealized
Gains

 

Gross
Unrealized
Losses

 

Fair Value

 

Cash and cash equivalents:

 

 

 

 

 

 

 

 

 

 

 

 

 

Cash

 

$

1,519

 

$

 

$

 

$

1,519

 

Money market funds

 

 

23,994

 

 

 

 

 

 

23,994

 

Domestic corporate debt securities

 

 

3,005

 

 

 

 

 

 

3,005

 

​  

​  

​  

​  

​  

​  

​  

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Total

 

$

28,518

 

$

 

$

 

$

28,518

 

​  

​  

​  

​  

​  

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Marketable securities:

 

 

 

 

 

 

 

 

 

 

 

 

 

Domestic corporate debt securities

 

 

69,542

 

 

 

 

(33

)

 

69,509

 

Domestic corporate commercial paper

 

 

7,237

 

 

12

 

 

 

 

7,249

 

​  

​  

​  

​  

​  

​  

​  

​  

Total

 

$

76,779

 

$

12

 

$

(33

)

$

76,758

 

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