XML 43 R34.htm IDEA: XBRL DOCUMENT v3.10.0.1
Income Taxes (Tables)
6 Months Ended
Jul. 31, 2018
Income Tax Disclosure [Abstract]  
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] A reconciliation of the beginning and ending amount of unrecognized tax benefits, including interest and penalties, is as follows (amounts in thousands):

   Six Months Ended
July 31,
 
   2018   2017 
         
Unrecognized tax benefits, beginning of period  $2,325   $2,096 
Changes for prior years’ tax positions   832    164 
Changes for current year tax positions        
Unrecognized tax benefits, end of period  $3,157   $2,260