Note 5 - Property and Equipment - Components of Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Property, plant and equipment, gross	$ 1,644	$ 1,644
Less: Accumulated depreciation and amortization	(1,644)	(1,642)
		2
Office Equipment [Member]
Property, plant and equipment, gross	605	605
Equipment [Member]
Property, plant and equipment, gross	973	973
Software and Software Development Costs [Member]
Property, plant and equipment, gross	$ 66	$ 66