Note 1 - Summary of Business and Significant Accounting Policies - Property and Equipment, Net (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
Property and Equipment, Gross	$ 67,969	$ 64,642	$ 64,925
Less accumulated depreciation and amortization	(37,561)	(33,770)	$ (32,845)
Property and Equipment, Net	30,408	30,872
Building and Building Improvements [Member]
Property and Equipment, Gross	32,444	31,979
Computer Equipment and Software [Member]
Property and Equipment, Gross	17,312	16,027
Furniture and Office Equipment [Member]
Property and Equipment, Gross	7,632	6,748
Leasehold Improvements [Member]
Property and Equipment, Gross	6,677	5,984
Land [Member]
Property and Equipment, Gross	3,850	3,850
Automobiles [Member]
Property and Equipment, Gross	$ 54	$ 54

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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