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Note 19 - Other Charges (Details) - Other Charges Included in Consolidated Statements of Operations - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2014
Note 19 - Other Charges (Details) - Other Charges Included in Consolidated Statements of Operations [Line Items]      
Acquisition-related costs $ 1,416 $ 1,666 $ 1,308
1,491 2,876 6,512
Fiscal 2015 Restructuring Plan [Member]      
Note 19 - Other Charges (Details) - Other Charges Included in Consolidated Statements of Operations [Line Items]      
Restructuring plan 50 715  
Fiscal 2014 Restructuring Plan [Member]      
Note 19 - Other Charges (Details) - Other Charges Included in Consolidated Statements of Operations [Line Items]      
Restructuring plan 33 100 1,904
Other Restructuring Plans [Member]      
Note 19 - Other Charges (Details) - Other Charges Included in Consolidated Statements of Operations [Line Items]      
Other restructuring plans $ (7) (1) (13)
Executive Officer [Member]      
Note 19 - Other Charges (Details) - Other Charges Included in Consolidated Statements of Operations [Line Items]      
Executive departure charges   $ 396 $ 3,313