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Fair Value Measurements (Tables)
3 Months Ended
Jul. 31, 2020
Fair Value Disclosures [Abstract]  
Fair Value of Assets on Recurring Basis The following table summarizes the fair value of assets and liabilities that are recorded in the Company’s consolidated financial statements as of July 31, 2020 and April 30, 2020 at fair value on a recurring basis (in thousands):
 Fair Value Measurements
 As of July 31, 2020
 Level 1Level 2Level 3
ASSETS:   
Mutual funds$884 $ $ 
Foreign exchange forward contracts 153  
Total assets at fair value$884 $153 $ 
 As of April 30, 2020
 Level 1Level 2Level 3
ASSETS:   
Mutual funds$773 $ $ 
LIABILITIES:
Foreign exchange forward contracts$ $(1,102)$