Note 5 -Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2018	Oct. 31, 2017
Effective Income Tax Rate Reconciliation, Percent, Total	116.00%	32.50%	122.166%	2.80%
Income Tax Expense (Benefit), Total	$ 934	$ 808	$ 1,525	$ (241)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	802	$ (2,484)	1	$ (8,720)
Unrecognized Tax Benefits, Ending Balance	$ 100		100
Global Intangible Low-taxed Income (GILTI)			100
Maximum [Member]
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total			$ 100