Note 1 - Summary of Business and Significant Accounting Policies - Changes in Property and Equipment, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Property and Equipment, Gross, Beginning Balance	$ 64,642	$ 64,925
Property and Equipment, Gross, Additions	3,720	3,267
Property and Equipment, Gross, Disposals	(1,874)	(3,258)
Property and Equipment, Gross, Impact of Foreign Currency Translation	1,481	(292)
Property and Equipment, Gross, Ending Balance	67,969	64,642
Accumulated Depreciation, Beginning Balance	(33,770)	(32,845)
Depreciation	(4,562)	(4,326)
Accumulated Depreciation, Disposals	1,719	3,211
Accumulated Depreciation, Impact of Foreign Currency Translation	(948)	190
Accumulated Depreciation, Ending Balance	(37,561)	(33,770)
Property and Equipment, Net	$ 30,408	$ 30,872