Note 3 - Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2016
U.S. federal	$ 2,862	$ 437	$ (1,656)
State	38	30	26
Foreign	2,433	3,894	2,591
Subtotal	5,333	4,361	961
U.S. federal	(519)	11,564	(956)
State	19	3,610	303
Foreign	24	(348)	63
Subtotal	(476)	14,826	(590)
Equity adjustment		89	1,253
Total	$ 4,857	$ 19,276	$ 1,624