Organization and Summary of Significant Accounting Policies (Tables)
 3 Months Ended
Apr. 30, 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 condensed consolidated balance sheets and the sums are presented on the condensed consolidated statements of cash flows:

 

 

 

As of

 

 

 

April 30, 2019

 

 

January 31, 2019

 

 

April 30, 2018

 

 

January 31, 2018

 

 

 

(in thousands)

 

Cash and cash equivalents

 

$

204,444

 

 

$

194,047

 

 

$

336,692

 

 

$

346,672

 

Restricted cash

 

 

11

 

 

 

11

 

 

 

9

 

 

 

9

 

Total as presented in the consolidated statements of cash flows

 

$

204,455

 

 

$

194,058

 

 

$

336,701

 

 

$

346,681