Note 3 - Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	34.00%
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ (3,800,000)	$ (7,800,000)	$ (2,400,000)
Income (Loss) from Continuing Operations before Income Taxes, Foreign	7,600,000	18,400,000	$ 18,000,000
Undistributed Earnings of Foreign Subsidiaries	83,200,000
Deferred Tax Assets, Valuation Allowance	29,868,000	$ 13,480,000
Operating Loss Carryforwards	35,500,000
Tax Credit Carryforward, Amount	16,400,000
Unrecognized Tax Benefits, Period Increase (Decrease)	200,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	69,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	300,000
Domestic Tax Authority and State and Local Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance	$ 16,300,000