Note 11 - Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Operating cash flows related to operating lease liabilities	$ (5,378)	$ (6,077)
Financing cash flows related to finance lease liabilities	(119)	(47)
Total cash flows related to lease liabilities	(5,497)	(6,124)
Leased assets obtained in exchange for new operating lease liabilities	6,570	10,419
Leased assets obtained in exchange for new finance lease liabilities	290	222
Total non-cash items	$ 6,860	$ 10,641