XML 41 R25.htm IDEA: XBRL DOCUMENT v3.7.0.1
Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Jan. 31, 2017
Activity of Allowance for Doubtful Accounts

The activity of the allowance for doubtful accounts for the years ended January 31, 2017, 2016 and 2015 was as follows:

 

     Balance at
beginning of
year		      Additions      Deductions     Balance at
end of
year		  

Year ended January 31, 2017

    $ 664        4,892        (4,968 )    $ 588  

Year ended January 31, 2016

    $ 850        6,578        (6,764 )    $ 664  

Year ended January 31, 2015

    $ 1,711        4,666        (5,527 )    $ 850  
Activity of Sales Return Reserve

The activity of the sales returns reserve for the years ended January 31, 2017, 2016 and 2015 was as follows:

 

     Balance at
beginning of
year		      Additions      Deductions     Balance at
end of
year		  

Year ended January 31, 2017

    $ 24,385        105,909        (105,412 )    $ 24,882  

Year ended January 31, 2016

    $ 19,804        96,707        (92,126 )    $ 24,385  

Year ended January 31, 2015

    $ 17,089        80,390        (77,675 )    $ 19,804