Note 7 - Income Taxes (Details Textual) - USD ($)	Jan. 31, 2017	Jan. 31, 2016
Operating Loss Carryforwards		$ 1,100,000
Domestic Tax Authority [Member]
Tax Credit Carryforward, Amount	$ 1,700,000
Operating Loss Carryforwards	36,000,000
State and Local Jurisdiction [Member]
Tax Credit Carryforward, Amount	2,100,000
Operating Loss Carryforwards	$ 29,700,000