Note 7 - Leases - Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jan. 31, 2020	Jan. 31, 2020	Jan. 31, 2019
Financing cash flows from finance leases		$ 287	$ 250
Operating cash flows from finance leases		58
Operating cash flows from operating leases		$ 2,287
Finance leases liabilities
Operating leases liabilities	$ 94