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Fair Value Measurements (Tables)
 9 Months Ended
Oct. 31, 2017
Fair Value Disclosures [Abstract]  
Summary of Fair Value Hierarchy for Financial Assets Measured at Fair Value on Recurring Basis

The following table summarizes the Company’s fair value hierarchy for its financial assets measured at fair value on a recurring basis (in thousands):

 

 

 

Level 1

 

 

Level 2

 

 

Level 3

 

 

Total

 

October 31, 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds (1)

 

$

206,152

 

 

$

-

 

 

$

-

 

 

$

206,152

 

January 31, 2017

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Money market funds (1)

 

$

178,245

 

 

$

-

 

 

$

-

 

 

$

178,245

 

 

(1)  Included in cash and cash equivalents.