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Note 10 - Goodwill - Goodwill (Details) - USD ($)
 12 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Balance at beginning of period $ 217,486,000 $ 147,440,000
Adjustments on account of foreign exchange (1,310,000) (4,467,000)
Balance at end of period 263,113,000 217,486,000
Airclic [Member]    
Balance at beginning of period   12,480,000
Goodwill Acquired During Period 810,000
MK Data [Member]    
Balance at beginning of period 51,108,000  
Goodwill Acquired During Period 51,108,000
Balance at end of period   51,108,000
BearWare [Member]    
Balance at beginning of period 4,958,000  
Goodwill Acquired During Period 4,958,000
Balance at end of period   4,958,000
Oz [Member]    
Balance at beginning of period 17,637,000  
Goodwill Acquired During Period 17,637,000
Balance at end of period   17,637,000
Pixie Software GmbH [Member]    
Goodwill Acquired During Period 6,705,000
Balance at end of period 6,705,000  
Appterra LLC [Member]    
Goodwill Acquired During Period 3,766,000
Balance at end of period 3,766,000  
4Solututions Information Technology [Member]    
Goodwill Acquired During Period 1,351,000
Balance at end of period 1,351,000  
Datamyne Inc [Member]    
Goodwill Acquired During Period 35,115,000
Balance at end of period $ 35,115,000