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Income Taxes (Tables)
9 Months Ended
Oct. 31, 2020
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):
   Nine Months Ended
October 31,
 
   2020   2019 
         
Unrecognized tax benefits, beginning of period  $7,370   $9,232 
Changes for prior years’ tax positions   (57)    (77) 
Changes for current year tax positions   -    - 
Unrecognized tax benefits, end of period  $7,313   $9,155