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Fair Value Measurements
3 Months Ended
Mar. 31, 2015
Fair Value Disclosures [Abstract]  
Fair Value Measurements

(3) Fair Value Measurements

 

            Fair Value Measurement at
Reporting Date Using
 

Description

   March 31, 2015      Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)
     Significant
Other
Observable
Inputs
(Level 2)
     Significant
Unobservable
Inputs

(Level 3)
 
    

(In thousands)

 

Marketable securities:

           

U.S. corporate bonds

   $ 1,003      $ 1,003      $ —         $ —     

Foreign corporate bonds

     1,498        1,498        —           —     
  

 

 

    

 

 

    

 

 

    

 

 

 

Total

$ 2,501   $ 2,501   $ —      $ —     
  

 

 

    

 

 

    

 

 

    

 

 

 

As of March 31, 2015, amortized cost available-for-sale securities approximated fair value.