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Note 17 - Income Taxes (Tables) | 12 Months Ended
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Jan. 31, 2016
Income Tax Disclosure [Abstract] |
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block] |
Year Ended |  | January 31, 2016 |  |  | January 31, 2015 |  |  | January 31, 2014 |
Canada |  |  | 13,933 |  |  |  | 14,489 |  |  |  | 6,922 |
United States |  |  | 4,773 |  |  |  | 6,300 |  |  |  | 7,841 |
Other countries |  |  | 9,064 |  |  |  | 1,032 |  |  |  | (1,030 | )
|  |  | 27,770 |  |  |  | 21,821 |  |  |  | 13,733 |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
Year Ended |  | January 31, 2016 |  |  | January 31, 2015 |  |  | January 31, 2014 |
Current income tax expense |  |  |  |  |  |  |  |  |  |  |  |
Canada |  |  | 94 |  |  |  | 568 |  |  |  | 61 |
United States |  |  | 70 |  |  |  | 1,060 |  |  |  | 605 |
Other countries |  |  | 1,279 |  |  |  | 1,156 |  |  |  | 1,102 |
|  |  | 1,443 |  |  |  | 2,784 |  |  |  | 1,768 |
Deferred income tax expense (recovery) |  |  |  |  |  |  |  |  |  |  |  |
Canada |  |  | 3,493 |  |  |  | 3,741 |  |  |  | 3,827 |
United States |  |  | 800 |  |  |  | 2,144 |  |  |  | 2,804 |
Other countries |  |  | 1,472 |  |  |  | (1,907 | ) |  |  | (4,278 | )
|  |  | 5,765 |  |  |  | 3,978 |  |  |  | 2,353 |
|  |  | 7,208 |  |  |  | 6,762 |  |  |  | 4,121 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | January 31, 2016 |  |  | January 31, 2015 |
Assets |  |  |  |  |  |  |  |
Accruals not currently deductible |  |  | 8,653 |  |  |  | 4,238 |
Accumulated net operating losses |  |  | 19,859 |  |  |  | 22,617 |
Corporate minimum taxes |  |  | 1,589 |  |  |  | 1,710 |
Difference between tax and accounting basis of property and equipment |  |  | 700 |  |  |  | 7,031 |
Research and development and other tax credits and expenses |  |  | 2,885 |  |  |  | 2,792 |
Other timing differences |  |  | 924 |  |  |  | 1,508 |
Total deferred income tax assets |  |  | 34,610 |  |  |  | 39,896 |
Liabilities |  |  |  |  |  |  |  |
Difference between tax and accounting basis of intangible assets |  |  | (9,584 | ) |  |  | (9,232 | )
Uncertain tax positions incurred in loss years |  |  | (356 | ) |  |  | (530 | )
Total deferred income tax liabilities |  |  | (9,940 | ) |  |  | (9,762 | )
Net deferred income taxes |  |  | 24,670 |  |  |  | 30,134 |
Valuation allowance |  |  | (13,963 | ) |  |  | (14,681 | )
Net deferred income taxes, net of valuation allowance |  |  | 10,707 |  |  |  | 15,453 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | January 31, 2016 |  |  | January 31, 2015 |  |  | January 31, 2014 |
Net income before taxes |  |  | 27,770 |  |  |  | 21,821 |  |  |  | 13,733 |
Combined basic Canadian statutory rates |  |  | 26.5 | % |  |  | 26.5 | % |  |  | 26.5 | %
Income tax expense based on the above rates |  |  | 7,359 |  |  |  | 5,783 |  |  |  | 3,639 |
Increase (decrease) in income taxes resulting from: |  |  |  |  |  |  |  |  |  |  |  |
Permanent differences including amortization of intangibles |  |  | (2,593 | ) |  |  | 800 |  |  |  | 1,078 |
Effect of differences between Canadian and foreign tax rates |  |  | 169 |  |  |  | 1,007 |  |  |  | 663 |
Effect of rate changes on current year timing differences |  |  | 1,150 |  |  |  | - |  |  |  | 321 |
Adjustments relating to previous periods |  |  | 36 |  |  |  | 9 |  |  |  | 355 |
(Decrease) increase in tax reserves |  |  | (172 | ) |  |  | (41 | ) |  |  | 239 |
Valuation allowance |  |  | (41 | ) |  |  | (1,195 | ) |  |  | (2,707 | )
Stock compensation |  |  | 345 |  |  |  | 86 |  |  |  | 481 |
Deferred tax charges |  |  | 270 |  |  |  | - |  |  |  | - |
Other, including foreign exchange |  |  | 685 |  |  |  | 313 |  |  |  | 52 |
Income tax expense |  |  | 7,208 |  |  |  | 6,762 |  |  |  | 4,121 |
Summary of Operating Loss Carryforwards [Table Text Block] |
Expiry year |  | Canada |  |  | United States |  |  | EMEA |  |  | Asia Pacific |  |  | Total |
2017 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 122 |  |  |  | 122 |
2018 |  |  | - |  |  |  | - |  |  |  | 316 |  |  |  | - |  |  |  | 316 |
2019 |  |  | - |  |  |  | 2,649 |  |  |  | 388 |  |  |  | 57 |  |  |  | 3,094 |
2020 |  |  | - |  |  |  | - |  |  |  | 194 |  |  |  | 48 |  |  |  | 242 |
2021 |  |  | - |  |  |  | 805 |  |  |  | - |  |  |  | 20 |  |  |  | 825 |
Thereafter |  |  | 115 |  |  |  | 9,653 |  |  |  | 64,744 |  |  |  | 6,808 |  |  |  | 81,320 |
|  |  | 115 |  |  |  | 13,107 |  |  |  | 65,642 |  |  |  | 7,055 |  |  |  | 85,919 |
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | January 31, 2016 |  |  | January 31, 2015 |  |  | January 31, 2014 |
Liability, beginning of year |  |  | 5,721 |  |  |  | 6,211 |  |  |  | 5,639 |
Gross increases – current period |  |  | 1,967 |  |  |  | 825 |  |  |  | 981 |
Lapsing due to statutes of limitations |  |  | (1,920 | ) |  |  | (1,315 | ) |  |  | (409 | )
Liability, end of year |  |  | 5,768 |  |  |  | 5,721 |  |  |  | 6,211 |

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