Note 4 - Income Taxes - Reconciliation of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017
Computed expected tax expense (benefit)	$ 2,503	$ (1,431)	$ 1,301
State income taxes, net of federal income tax expense	96	(157)	(54)
Incremental tax expense from foreign operations	715	923	137
Equity compensation	(2,916)	(1,004)	(29)
Foreign withholding taxes	1,089	794	676
Net change in valuation allowance	3,224	5,448	16,861
Net change in contingency reserve	(71)	(81)	198
Non-deductible expenses	1,149	(407)	660
Benefit of tax credits	(3,483)	(1,766)	(1,243)
Subpart F income	101	302	345
U.S. Tax Reform (the “Tax Act”)	(1,312)	1,951
Other	394	285	424
Total	$ 1,489	$ 4,857	$ 19,276