XML 42 R23.htm IDEA: XBRL DOCUMENT v3.3.0.814
Other intangible assets with definite lives (Tables)
9 Months Ended
Oct. 31, 2015
Other intangible assets with definite lives [Abstract]  
Patent amortization expense [Table Text Block]
 
Three Months Ended October 31,
Nine Months Ended October 31,
 
2015

2014

2015

2014

Patent amortization expense

$14


$13


$40


$38