Note 4 - Income Taxes - Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
U.S. federal	$ (829)	$ 2,862	$ 437
State	(13)	38	30
Foreign	3,784	2,433	3,894
Subtotal	2,942	5,333	4,361
U.S. federal	79	(519)	11,564
State	(30)	19	3,610
Foreign	(1,502)	24	(348)
Subtotal	(1,453)	(476)	14,826
Equity adjustment			89
Total	$ 1,489	$ 4,857	$ 19,276