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Note 17 - Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
Income Tax Disclosure [Abstract]
Income Before Taxes, Percent	26.00%	31.00%	30.00%
Effective Income Tax Rate Reconciliation, Percent	5.00%	13.00%	13.00%
Undistributed Earnings of Foreign Subsidiaries (in Dollars)	$ 118.1
Liability for Uncertain Tax Positions, Noncurrent (in Dollars)	5.8
Unrecognized Tax Benefits that Would Impact Effective Tax Rate (in Dollars)	4.7
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit (in Dollars)	$ (1.0)

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Income tax expense expressed as a percentage of income before taxes.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The noncurrent portion of the amount recognized for uncertain tax positions as of the balance sheet date.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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