Note 1 - Basis of Presentation - Impact of Corrections (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Apr. 30, 2024	Oct. 31, 2024	Oct. 31, 2023	Jan. 31, 2024
Property, plant and equipment, net of accumulated depreciation	$ 36,788	$ 35,652		$ 37,620
Total assets	155,740	160,749		155,711
Trade accounts payable	23,249	20,788		25,323
Total current liabilities	57,987	53,794		$ 57,742
Accounts payable	(1,691)	(3,954)	$ 9,346
Net cash provided by operating activities	(73)	7,906	7,617
Capital expenditures	(589)	(1,555)	(8,204)
Net cash used in investing activities	(589)	$ (1,555)	$ (8,199)
Previously Reported [Member]
Property, plant and equipment, net of accumulated depreciation	38,211
Total assets	157,163
Trade accounts payable	24,672
Total current liabilities	59,410
Accounts payable	(268)
Net cash provided by operating activities	1,350
Capital expenditures	(2,012)
Net cash used in investing activities	(2,012)
Revision of Prior Period, Adjustment [Member]
Property, plant and equipment, net of accumulated depreciation	(1,423)
Total assets	(1,423)
Trade accounts payable	(1,423)
Total current liabilities	(1,423)
Accounts payable	(1,423)
Net cash provided by operating activities	(1,423)
Capital expenditures	1,423
Net cash used in investing activities	$ 1,423