Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Jan. 31, 2021
Income Tax Expense (Benefit), Total	$ (1,376)	$ 995
Effective Income Tax Rate Reconciliation, Percent, Total	302.00%	170.00%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	$ 2,000
Unrecognized Tax Benefits, Ending Balance	1,300		$ 1,300
Unrecognized Tax Benefits, Period Increase (Decrease), Total	1,000	$ 1,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	100	$ 100
Deferred Tax Assets, Valuation Allowance, Total	$ 45,500		$ 48,600
Foreign Tax Authority [Member] | Ministry of Finance, India [Member]
Income Tax Examination, Year under Examination	2010 2013 2018
Foreign Tax Authority [Member] | Ministry of the Economy, Finance and Industry, France [Member]
Income Tax Examination, Year under Examination	2018 2019 2020