Note 9 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019	Jan. 31, 2020
Income Tax Expense (Benefit), Total	$ 440	$ 9,872	$ 1,435	$ 10,587
Effective Income Tax Rate Reconciliation, Percent, Total	88.00%	(292.00%)	132.00%	(180.00%)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest, Total	$ 500	$ (3,378)	$ 1,085	$ (5,897)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount		$ 10,000		$ 10,000
Unrecognized Tax Benefits, Ending Balance	1,300		1,300
Unrecognized Tax Benefits, Period Increase (Decrease), Total			1,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	100		100
Deferred Tax Assets, Valuation Allowance, Total	53,800		$ 53,800		$ 51,000
Foreign Tax Authority [Member] | Ministry of Finance, India [Member]
Income Tax Examination, Year under Examination			2010 2013 2018
Foreign Tax Authority [Member] | Mexican Tax Authority [Member]
Income Tax Examination, Year under Examination			2015 2016 2017 2018
Foreign Tax Authority [Member] | Federal Ministry of Finance, Germany [Member]
Deferred Tax Assets, Valuation Allowance, Total	$ 2,800		$ 2,800		$ 2,600
Income Tax Examination, Year under Examination			2015 2016 2017
Foreign Tax Authority [Member] | Income Tax Autority, Thailand [Member]
Income Tax Examination, Year under Examination			2018