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Note 17 - Income Taxes (Details) - Income Tax Expense (Recovery) Incurred by Jurisdictions - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2016
Jan. 31, 2015
Jan. 31, 2014
Current income tax expense      
Current income tax expense $ 1,443 $ 2,784 $ 1,768
Deferred income tax expense (recovery)      
Deferred income tax expense (recovery) 5,765 3,978 2,353
7,208 6,762 4,121
Canada [Member]      
Current income tax expense      
Current income tax expense 94 568 61
Deferred income tax expense (recovery)      
Deferred income tax expense (recovery) 3,493 3,741 3,827
United States [Member]      
Current income tax expense      
Current income tax expense 70 1,060 605
Deferred income tax expense (recovery)      
Deferred income tax expense (recovery) 800 2,144 2,804
Other Countries [Member]      
Current income tax expense      
Current income tax expense 1,279 1,156 1,102
Deferred income tax expense (recovery)      
Deferred income tax expense (recovery) $ 1,472 $ (1,907) $ (4,278)