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Note 3 - Acquisitions - Preliminary Purchase Price Allocation for Businesses Acquired (Details) - USD ($)
 12 Months Ended
Dec. 23, 2016
Nov. 11, 2016
Oct. 12, 2016
Apr. 29, 2016
Nov. 25, 2015
Jul. 22, 2015
Jul. 20, 2015
Dec. 05, 2014
Nov. 19, 2014
May 30, 2014
Apr. 01, 2014
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2015
Cash, net of cash acquired                       $ 71,348,000 $ 120,853,000 $ 82,152,000
GOODWILL (Note 10)                       263,113,000 217,486,000 147,440,000
MK Data [Member]                            
Cash, net of cash acquired                         80,151,000  
Net working capital adjustments (receivable)                         (84,000)  
Purchase price consideration             $ 80,200,000           80,067  
Current assets, excluding cash acquired                         2,083,000  
Current liabilities                         (204,000)  
Deferred revenue                         (2,610,000)  
Net tangible liabilities assumed                         731,000  
GOODWILL (Note 10)                         51,108,000  
Net tangible assets (liabilities) assumed                         (731,000)  
MK Data [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                         7,500,000  
MK Data [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                         22,000,000  
MK Data [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                         190,000  
Pixie Software GmbH [Member]                            
Cash, net of cash acquired       $ 10,600,000               10,648,000    
Net working capital adjustments (receivable)                       (26,000)    
Purchase price consideration                       10,622,000    
Current assets, excluding cash acquired                       500,000    
Property and equipment                       46,000    
Deferred income tax asset                          
Current liabilities                       (523,000)    
Deferred revenue                       (78,000)    
Deferred income tax liability                       (1,870,000)    
Income tax liability                          
Net tangible liabilities assumed                       (1,925,000)    
GOODWILL (Note 10)                       6,705,000    
Net tangible assets (liabilities) assumed                       1,925,000    
Pixie Software GmbH [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                       1,375,000    
Pixie Software GmbH [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                          
Pixie Software GmbH [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                          
Pixie Software GmbH [Member] | Existing Technology [Member]                            
Finite-lived intangible assets acquired                       4,467,000    
BearWare [Member]                            
Cash, net of cash acquired                         11,243,000  
Net working capital adjustments (receivable)                         (19,000)  
Purchase price consideration           $ 11,200,000             11,224  
Current assets, excluding cash acquired                         759,000  
Current liabilities                         (112,000)  
Deferred revenue                         (451,000)  
Net tangible liabilities assumed                         (196,000)  
GOODWILL (Note 10)                         4,958,000  
Net tangible assets (liabilities) assumed                         196,000  
BearWare [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                         2,600,000  
BearWare [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                         3,400,000  
BearWare [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                         70,000  
Appterra LLC [Member]                            
Cash, net of cash acquired     $ 5,700,000                 5,703,000    
Contingent consideration     $ 700,000                 700,000    
Net working capital adjustments (receivable)                       (155,000)    
Purchase price consideration                       6,248,000    
Current assets, excluding cash acquired                       424,000    
Property and equipment                       21,000    
Deferred income tax asset                       18,000    
Current liabilities                       (398,000)    
Deferred revenue                       (633,000)    
Deferred income tax liability                          
Income tax liability                          
Net tangible liabilities assumed                       (568,000)    
GOODWILL (Note 10)                       3,766,000    
Net tangible assets (liabilities) assumed                       568,000    
Appterra LLC [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                       1,840,000    
Appterra LLC [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                          
Appterra LLC [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                       50,000    
Appterra LLC [Member] | Existing Technology [Member]                            
Finite-lived intangible assets acquired                       1,160,000    
Oz [Member]                            
Cash, net of cash acquired                         29,459,000  
Net working capital adjustments (receivable)                         (24,000)  
Purchase price consideration         $ 29,500,000               29,435  
Current assets, excluding cash acquired                         466,000  
Property and equipment                         29,000  
Current liabilities                         (293,000)  
Deferred revenue                         (1,634,000)  
Net tangible liabilities assumed                         1,432,000  
GOODWILL (Note 10)                         17,637,000  
Net tangible assets (liabilities) assumed                         (1,432,000)  
Oz [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                         5,400,000  
Oz [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                         7,500,000  
Oz [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                         90,000  
Oz [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                         240,000  
Computer Management [Member]                            
Cash, net of cash acquired                           6,689,000
Net working capital adjustments (receivable)                           3,000
Purchase price consideration                     $ 6,700,000     6,692
Current assets, excluding cash acquired                           211,000
Property and equipment                           65,000
Current liabilities                           (10,000)
Deferred revenue                           (8,000)
Net tangible liabilities assumed                           (258,000)
GOODWILL (Note 10)                           1,338,000
Net tangible assets (liabilities) assumed                           258,000
Computer Management [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                           3,256,000
Computer Management [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                           1,840,000
4Solututions Information Technology [Member]                            
Cash, net of cash acquired   $ 2,500,000                   2,456,000    
Net working capital adjustments (receivable)                       4,000    
Purchase price consideration                       2,460,000    
Current assets, excluding cash acquired                       257,000    
Property and equipment                       33,000    
Deferred income tax asset                          
Current liabilities                       (182,000)    
Deferred revenue                       (164,000)    
Deferred income tax liability                       (443,000)    
Income tax liability                          
Net tangible liabilities assumed                       (499,000)    
GOODWILL (Note 10)                       1,351,000    
Net tangible assets (liabilities) assumed                       499,000    
4Solututions Information Technology [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                       910,000    
4Solututions Information Technology [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                       91,000    
4Solututions Information Technology [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                          
4Solututions Information Technology [Member] | Existing Technology [Member]                            
Finite-lived intangible assets acquired                       607,000    
The2016 Acquisitions [Member]                            
Cash, net of cash acquired                         120,853,000  
Net working capital adjustments (receivable)                         (127,000)  
Purchase price consideration                         120,726  
Current assets, excluding cash acquired                         3,308,000  
Property and equipment                         29,000  
Current liabilities                         (609,000)  
Deferred revenue                         (4,695,000)  
Net tangible liabilities assumed                         1,967,000  
GOODWILL (Note 10)                         73,703,000  
Net tangible assets (liabilities) assumed                         (1,967,000)  
The2016 Acquisitions [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                         15,500,000  
The2016 Acquisitions [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                         32,900,000  
The2016 Acquisitions [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                         350,000  
The2016 Acquisitions [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                         $ 240,000  
Customs Info [Member]                            
Cash, net of cash acquired                           34,121,000
Net working capital adjustments (receivable)                           (813,000)
Purchase price consideration                   $ 39,500,000       38,690
Current assets, excluding cash acquired                           1,754,000
Property and equipment                          
Current liabilities                           (556,000)
Deferred revenue                           (3,147,000)
Net tangible liabilities assumed                           2,876,000
GOODWILL (Note 10)                           26,135,000
Net tangible assets (liabilities) assumed                           (2,876,000)
Common shares issued                           5,382,000
Debt                           (927,000)
Customs Info [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                           8,650,000
Customs Info [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                           5,708,000
Customs Info [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                           682,000
Customs Info [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                           391,000
Datamyne Inc [Member]                            
Cash, net of cash acquired $ 52,500,000                     52,541,000    
Net working capital adjustments (receivable)                       (368,000)    
Purchase price consideration                       52,173,000    
Current assets, excluding cash acquired                       1,843,000    
Property and equipment                       87,000    
Deferred income tax asset                       3,281,000    
Current liabilities                       (1,671,000)    
Deferred revenue                       (2,813,000)    
Deferred income tax liability                       (10,955,000)    
Income tax liability                       (694,000)    
Net tangible liabilities assumed                       (10,922,000)    
GOODWILL (Note 10)                       35,115,000    
Net tangible assets (liabilities) assumed                       10,922,000    
Datamyne Inc [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                       13,300,000    
Datamyne Inc [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                       1,790,000    
Datamyne Inc [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                       390,000    
Datamyne Inc [Member] | Existing Technology [Member]                            
Finite-lived intangible assets acquired                       12,500,000    
Airclic [Member]                            
Cash, net of cash acquired                           29,597,000
Net working capital adjustments (receivable)                           (318,000)
Purchase price consideration                 $ 29,600,000         29,279
Current assets, excluding cash acquired                           4,990,000
Property and equipment                           440,000
Current liabilities                           (3,466,000)
Deferred revenue                           (6,930,000)
Net tangible liabilities assumed                           4,966,000
GOODWILL (Note 10)                           12,480,000
Net tangible assets (liabilities) assumed                           (4,966,000)
Airclic [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                           7,802,000
Airclic [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                           13,786,000
Airclic [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                           177,000
2017 Acuisitions [Member]                            
Cash, net of cash acquired                       71,348,000    
Contingent consideration                       700,000    
Net working capital adjustments (receivable)                       (545,000)    
Purchase price consideration                       71,503,000    
Current assets, excluding cash acquired                       3,024,000    
Property and equipment                       187,000    
Deferred income tax asset                       3,299,000    
Current liabilities                       (2,774,000)    
Deferred revenue                       (3,688,000)    
Deferred income tax liability                       (13,268,000)    
Income tax liability                       (694,000)    
Net tangible liabilities assumed                       (13,914,000)    
GOODWILL (Note 10)                       46,937,000    
Net tangible assets (liabilities) assumed                       13,914,000    
2017 Acuisitions [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                       17,425,000    
2017 Acuisitions [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                       1,881,000    
2017 Acuisitions [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                       440,000    
2017 Acuisitions [Member] | Existing Technology [Member]                            
Finite-lived intangible assets acquired                       $ 18,734,000    
e-customs [Member]                            
Cash, net of cash acquired                           9,611,000
Contingent consideration               $ 1,200,000            
Net working capital adjustments (receivable)                           (41,000)
Purchase price consideration               9,600,000           9,570
Current assets, excluding cash acquired                           1,190,000
Property and equipment                           7,000
Current liabilities                           (399,000)
Deferred revenue                           (19,000)
Deferred income tax liability                           (1,053,000)
Net tangible liabilities assumed                           274,000
GOODWILL (Note 10)                           4,581,000
Net tangible assets (liabilities) assumed                           (274,000)
e-customs [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                           2,318,000
e-customs [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                           2,807,000
e-customs [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                           138,000
Pentant Limited (Pentant) [Member]                            
Cash, net of cash acquired                           2,134,000
Contingent consideration               400,000            
Net working capital adjustments (receivable)                           (13,000)
Purchase price consideration               $ 2,100,000           2,121
Current assets, excluding cash acquired                           142,000
Property and equipment                          
Current liabilities                           (658,000)
Deferred revenue                           (38,000)
Deferred income tax liability                           (315,000)
Net tangible liabilities assumed                           869,000
GOODWILL (Note 10)                           1,059,000
Net tangible assets (liabilities) assumed                           (869,000)
Pentant Limited (Pentant) [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                           1,336,000
Pentant Limited (Pentant) [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                           595,000
The 2015 Acquisitions [Member]                            
Cash, net of cash acquired                           82,152,000
Net working capital adjustments (receivable)                           (1,182,000)
Purchase price consideration                           86,352
Current assets, excluding cash acquired                           8,287,000
Property and equipment                           512,000
Current liabilities                           (5,089,000)
Deferred revenue                           (10,142,000)
Deferred income tax liability                           (1,368,000)
Net tangible liabilities assumed                           8,727,000
GOODWILL (Note 10)                           45,593,000
Net tangible assets (liabilities) assumed                           (8,727,000)
Common shares issued                           5,382,000
Debt                           (927,000)
The 2015 Acquisitions [Member] | Customer Relationships [Member]                            
Finite-lived intangible assets acquired                           23,362,000
The 2015 Acquisitions [Member] | Developed Technology Rights [Member]                            
Finite-lived intangible assets acquired                           24,736,000
The 2015 Acquisitions [Member] | Trade Names [Member]                            
Finite-lived intangible assets acquired                           682,000
The 2015 Acquisitions [Member] | Noncompete Agreements [Member]                            
Finite-lived intangible assets acquired                           $ 706,000