Note 13 - Income Taxes (Details Textual)	12 Months Ended
Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Statement Line Items [Line Items]
Applicable tax rate	26.08%	26.00%	26.00%
Tax rate effect from change in tax rate	12.00%	11.00%	11.00%
Total average effective tax rate	26.08%	26.00%	26.00%

The applicable income tax rate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2017-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_c_ii&doctype=Standard
-URIDate 2017-03-09

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- Definition

The tax expense (income) divided by the accounting profit. [Refer: Accounting profit]

+ References

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- Definition

The tax rate effect on the reconciliation between the average effective tax rate and the applicable tax rate resulting from a change in tax rate. [Refer: Average effective tax rate; Applicable tax rate]

+ References

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- References

No definition available.

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