XML 37 R16.htm IDEA: XBRL DOCUMENT v2.4.1.9
Summary of Significant Accounting Policies (Tables)
3 Months Ended
Apr. 30, 2015
Accounting Policies [Abstract]  
Warranty Accrual

      2015       2014  
Beginning balance   $ 65,000     $ 60,000  
Warranty service provided     (84,420 )     (80,805 )
New product warranties     72,153       84,000  
Changes to pre-existing warranty accruals     12,267       (3,195 )
Ending balance   $ 65,000     $ 60,000