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Organization and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Jan. 31, 2019
Accounting Policies [Abstract]  
Schedule of Cash, Cash Equivalents and Restricted Cash The following table presents cash, cash equivalents and restricted cash reported on the consolidated balance sheets, and the sums are presented on the consolidated statements of cash flows:

 

 

As of January 31,

 

 

 

2019

 

 

2018

 

 

2017

 

 

 

(in thousands)

 

Cash and cash equivalents

 

$

194,047

 

 

$

346,672

 

 

$

322,872

 

Restricted cash

 

 

11

 

 

 

9

 

 

 

8

 

Total as presented in the consolidated statements of cash flows

 

$

194,058

 

 

$

346,681

 

 

$

322,880