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Fair Value of Financial Instruments (Tables)
 6 Months Ended
Oct. 31, 2018
Fair Value Disclosures [Abstract]  
Assets and Liabilities Measured at Fair Value on Recurring Basis

The following tables present our assets and liabilities that we measured at fair value on a recurring basis as of October 31, 2018 and April 30, 2018, respectively, and indicates the fair value hierarchy of the valuation techniques we used to determine such fair value (in thousands):

 

     October 31, 2018  
     Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)		      Significant
Other
Observable
Inputs
(Level 2)		      Significant
Unobservable
Inputs
(Level 3)		      Balance  

Cash equivalents

    $ 43,193      $ —      $ —      $ 43,193  

Marketable securities

      9,676        22,065        —          31,741  
  

 

 

     

 

 

     

 

 

     

 

 

  

Total

    $ 52,869      $ 22,065      $ —      $ 74,934  
  

 

 

     

 

 

     

 

 

     

 

 

  
     April 30, 2018  
     Quoted Prices
in Active
Markets for
Identical Assets
(Level 1)		      Significant
Other
Observable
Inputs
(Level 2)		      Significant
Unobservable
Inputs
(Level 3)		      Balance  

Cash equivalents

    $ 46,972      $ —      $ —      $ 46,972  

Marketable securities

      11,125        23,889        —          35,014  
  

 

 

     

 

 

     

 

 

     

 

 

  

Total

    $ 58,097      $ 23,889      $ —      $ 81,986