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Basis of Presentation and Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Jan. 31, 2016
Accounting Policies [Abstract]  
Schedule of Changes in Allowance for Doubtful Accounts

The following table presents the changes in the allowance for doubtful accounts:

 

 

 

Fiscal Year Ended January 31,

 

 

 

2014

 

 

2015

 

 

2016

 

 

 

 

 

 

 

(in thousands)

 

Allowance for doubtful accounts, beginning

   balance

 

$

0

 

 

$

160

 

 

$

210

 

Provision

 

 

160

 

 

 

50

 

 

 

918

 

Writeoffs

 

 

—

 

 

 

—

 

 

 

(184

)

Allowance for doubtful accounts, ending

   balance

 

$

160

 

 

$

210

 

 

$

944