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Note 3 - Acquisitions - Preliminary Purchase Price Allocation for Businesses Acquired (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 14, 2017
Jun. 01, 2017
May 18, 2017
Dec. 23, 2016
Nov. 11, 2016
Oct. 12, 2016
Apr. 29, 2016
Nov. 25, 2015
Jul. 22, 2015
Jul. 20, 2015
Jan. 31, 2018
Jan. 31, 2017
Jan. 31, 2016
Cash, net of cash acquired                     $ 111,867 $ 71,348 $ 120,853
GOODWILL (Note 10)                     350,148 263,113 217,486
ShipRush [Member]                          
Cash, net of cash acquired     $ 14,200               14,198    
Common shares issued                        
Contingent consideration                     1,233    
Net working capital adjustments (receivable) / payable                     88    
Purchase price consideration                     15,519    
Current assets, excluding cash acquired                     461    
Current liabilities                     (266)    
Deferred revenue                     (609)    
Net tangible (liabilities) assets assumed                     (414)    
GOODWILL (Note 10)                     8,603    
ShipRush [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                     2,400    
ShipRush [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                     4,710    
ShipRush [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                     120    
ShipRush [Member] | In Process Research and Development [Member]                          
Finite-lived intangible assets acquired                        
ShipRush [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                     100    
PCSTrac, Inc. [Member]                          
Cash, net of cash acquired   $ 11,500                 11,492    
Common shares issued                        
Contingent consideration                        
Net working capital adjustments (receivable) / payable                     40    
Purchase price consideration                     11,532    
Current assets, excluding cash acquired                     467    
Current liabilities                     (10)    
Deferred revenue                        
Net tangible (liabilities) assets assumed                     457    
GOODWILL (Note 10)                     5,815    
PCSTrac, Inc. [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                     1,850    
PCSTrac, Inc. [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                     3,270    
PCSTrac, Inc. [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                     60    
PCSTrac, Inc. [Member] | In Process Research and Development [Member]                          
Finite-lived intangible assets acquired                        
PCSTrac, Inc. [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                     80    
MacroPoint LLC [Member]                          
Cash, net of cash acquired                     86,177    
Common shares issued $ 20,000                   20,000    
Contingent consideration 80,000                        
Net working capital adjustments (receivable) / payable                     163    
Purchase price consideration $ 106,200                   106,340    
Current assets, excluding cash acquired                     2,127    
Current liabilities                     (1,693)    
Deferred revenue                     (5,787)    
Net tangible (liabilities) assets assumed                     (5,353)    
GOODWILL (Note 10)                     65,213    
MacroPoint LLC [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                     26,030    
MacroPoint LLC [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                     17,170    
MacroPoint LLC [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                     570    
MacroPoint LLC [Member] | In Process Research and Development [Member]                          
Finite-lived intangible assets acquired                     290    
MacroPoint LLC [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                     2,420    
The 2018 Acquisitions [Member]                          
Cash, net of cash acquired                     111,867    
Common shares issued                     20,000    
Contingent consideration                     1,233    
Net working capital adjustments (receivable) / payable                     291    
Purchase price consideration                     133,391    
Current assets, excluding cash acquired                     3,055    
Current liabilities                     (1,969)    
Deferred revenue                     (6,396)    
Net tangible (liabilities) assets assumed                     (5,310)    
GOODWILL (Note 10)                     79,631    
The 2018 Acquisitions [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                     30,280    
The 2018 Acquisitions [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                     25,150    
The 2018 Acquisitions [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                     750    
The 2018 Acquisitions [Member] | In Process Research and Development [Member]                          
Finite-lived intangible assets acquired                     290    
The 2018 Acquisitions [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                     $ 2,600    
Pixie Software GmbH [Member]                          
Cash, net of cash acquired             $ 10,600         10,648  
Net working capital adjustments (receivable) / payable                       (26)  
Purchase price consideration                       10,622  
Current assets, excluding cash acquired                       500  
Current liabilities                       (523)  
Deferred revenue                       (78)  
GOODWILL (Note 10)                       6,705  
Property and equipment                       46  
Deferred income tax asset                        
Deferred income tax liability                       (1,870)  
Income tax liability                        
Net tangible liabilities assumed                       (1,925)  
Net tangible assets (liabilities) assumed                       1,925  
Pixie Software GmbH [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                       1,375  
Pixie Software GmbH [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                       4,467  
Pixie Software GmbH [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                        
Pixie Software GmbH [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                        
Appterra LLC [Member]                          
Cash, net of cash acquired           $ 5,700           5,703  
Contingent consideration                       700  
Net working capital adjustments (receivable) / payable                       (118)  
Purchase price consideration                       6,285  
Current assets, excluding cash acquired                       391  
Current liabilities                       (328)  
Deferred revenue                       (633)  
GOODWILL (Note 10)                       3,766  
Property and equipment                       21  
Deferred income tax asset                       18  
Deferred income tax liability                        
Income tax liability                        
Net tangible liabilities assumed                       (531)  
Net tangible assets (liabilities) assumed                       531  
Appterra LLC [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                       1,840  
Appterra LLC [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                       1,160  
Appterra LLC [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                        
Appterra LLC [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                       50  
4Solututions Information Technology [Member]                          
Cash, net of cash acquired         $ 2,500             2,456  
Net working capital adjustments (receivable) / payable                       4  
Purchase price consideration                       2,460  
Current assets, excluding cash acquired                       257  
Current liabilities                       (182)  
Deferred revenue                       (164)  
GOODWILL (Note 10)                       1,351  
Property and equipment                       33  
Deferred income tax asset                        
Deferred income tax liability                       (443)  
Income tax liability                        
Net tangible liabilities assumed                       (499)  
Net tangible assets (liabilities) assumed                       499  
4Solututions Information Technology [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                       910  
4Solututions Information Technology [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                       607  
4Solututions Information Technology [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                       91  
4Solututions Information Technology [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                        
Datamyne Inc [Member]                          
Cash, net of cash acquired       $ 52,500               52,541  
Net working capital adjustments (receivable) / payable                       (567)  
Purchase price consideration                       51,974  
Current assets, excluding cash acquired                       1,837  
Current liabilities                       (1,263)  
Deferred revenue                       (2,979)  
GOODWILL (Note 10)                       34,680  
Property and equipment                       87  
Deferred income tax asset                       3,281  
Deferred income tax liability                       (10,955)  
Income tax liability                       (694)  
Net tangible liabilities assumed                       (10,686)  
Net tangible assets (liabilities) assumed                       10,686  
Datamyne Inc [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                       13,300  
Datamyne Inc [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                       12,500  
Datamyne Inc [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                       1,790  
Datamyne Inc [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                       390  
2017 Acuisitions [Member]                          
Cash, net of cash acquired                       71,348  
Contingent consideration                       700  
Net working capital adjustments (receivable) / payable                       (707)  
Purchase price consideration                       71,341  
Current assets, excluding cash acquired                       2,985  
Current liabilities                       (2,296)  
Deferred revenue                       (3,854)  
GOODWILL (Note 10)                       46,502  
Property and equipment                       187  
Deferred income tax asset                       3,299  
Deferred income tax liability                       (13,268)  
Income tax liability                       (694)  
Net tangible liabilities assumed                       (13,641)  
Net tangible assets (liabilities) assumed                       13,641  
2017 Acuisitions [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                       17,425  
2017 Acuisitions [Member] | Existing Technology [Member]                          
Finite-lived intangible assets acquired                       18,734  
2017 Acuisitions [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                       1,881  
2017 Acuisitions [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                       $ 440  
MK Data [Member]                          
Cash, net of cash acquired                         80,151
Net working capital adjustments (receivable) / payable                         (84)
Purchase price consideration                   $ 80,200     80,067
Current assets, excluding cash acquired                         2,083
Current liabilities                         (204)
Deferred revenue                         (2,610)
GOODWILL (Note 10)                         51,108
Property and equipment                        
Net tangible liabilities assumed                         731
Net tangible assets (liabilities) assumed                         (731)
MK Data [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                         7,500
MK Data [Member] | Developed Technology Rights [Member]                          
Finite-lived intangible assets acquired                         22,000
MK Data [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                         190
BearWare [Member]                          
Cash, net of cash acquired                         11,243
Net working capital adjustments (receivable) / payable                         (19)
Purchase price consideration                 $ 11,200       11,224
Current assets, excluding cash acquired                         759
Current liabilities                         (112)
Deferred revenue                         (451)
GOODWILL (Note 10)                         4,958
Property and equipment                        
Net tangible liabilities assumed                         (196)
Net tangible assets (liabilities) assumed                         196
BearWare [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                         2,600
BearWare [Member] | Developed Technology Rights [Member]                          
Finite-lived intangible assets acquired                         3,400
BearWare [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                         70
BearWare [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                        
Oz [Member]                          
Cash, net of cash acquired                         29,459
Net working capital adjustments (receivable) / payable                         (24)
Purchase price consideration               $ 29,500         29,435
Current assets, excluding cash acquired                         466
Current liabilities                         (293)
Deferred revenue                         (1,634)
GOODWILL (Note 10)                         17,637
Property and equipment                         29
Net tangible liabilities assumed                         1,432
Net tangible assets (liabilities) assumed                         (1,432)
Oz [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                         5,400
Oz [Member] | Developed Technology Rights [Member]                          
Finite-lived intangible assets acquired                         7,500
Oz [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                         90
Oz [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                         240
The2016 Acquisitions [Member]                          
Cash, net of cash acquired                         120,853
Net working capital adjustments (receivable) / payable                         (127)
Purchase price consideration                         120,726
Current assets, excluding cash acquired                         3,308
Current liabilities                         (609)
Deferred revenue                         (4,695)
GOODWILL (Note 10)                         73,703
Property and equipment                         29
Net tangible liabilities assumed                         1,967
Net tangible assets (liabilities) assumed                         (1,967)
The2016 Acquisitions [Member] | Customer Relationships [Member]                          
Finite-lived intangible assets acquired                         15,500
The2016 Acquisitions [Member] | Developed Technology Rights [Member]                          
Finite-lived intangible assets acquired                         32,900
The2016 Acquisitions [Member] | Trade Names [Member]                          
Finite-lived intangible assets acquired                         350
The2016 Acquisitions [Member] | Noncompete Agreements [Member]                          
Finite-lived intangible assets acquired                         $ 240