Note 1 - Basis of Presentation (As Restated) - Impact of Corrections (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 30, 2024	Jul. 31, 2024	Jul. 31, 2023	Jan. 31, 2024
Trade accounts receivable, less allowance for credit losses		$ 39,565		$ 46,646
Total current assets		100,401		98,818
Property, plant and equipment, net of accumulated depreciation	$ 36,788	36,457		37,620
Total assets	155,740	157,764		155,711
Trade accounts payable	23,249	19,988		25,323
Total current liabilities	57,987	55,048		$ 57,742
Loss (gain) from disposal of fixed assets		0	$ (5)
Accounts receivable		6,454	(9,865)
Net cash provided by operating activities	(73)	2,744	3,533
Capital expenditures	(589)	(1,233)	(6,797)
Net cash used in investing activities	(589)	(1,233)	(6,792)
Effect of exchange rate changes on cash, cash equivalents and restricted cash		(106)	61
Accounts payable	(1,691)	(4,487)	$ 8,044
Previously Reported [Member]
Trade accounts receivable, less allowance for credit losses		39,927
Total current assets		100,763
Property, plant and equipment, net of accumulated depreciation	38,211	37,518
Total assets	157,163	159,187
Trade accounts payable	24,672	21,411
Total current liabilities	59,410	56,471
Loss (gain) from disposal of fixed assets		29
Accounts receivable		6,090
Net cash provided by operating activities	1,350	3,832
Capital expenditures	(2,012)	(3,180)
Net cash used in investing activities	(2,012)	(3,180)
Effect of exchange rate changes on cash, cash equivalents and restricted cash		753
Accounts payable	(268)
Revision of Prior Period, Adjustment [Member]
Trade accounts receivable, less allowance for credit losses		(362)
Total current assets		(362)
Property, plant and equipment, net of accumulated depreciation	(1,423)	(1,061)
Total assets	(1,423)	(1,423)
Trade accounts payable	(1,423)	(1,423)
Total current liabilities	(1,423)	(1,423)
Loss (gain) from disposal of fixed assets		(29)
Accounts receivable		364
Net cash provided by operating activities	(1,423)	(1,088)
Capital expenditures	1,423	1,947
Net cash used in investing activities	1,423	1,947
Effect of exchange rate changes on cash, cash equivalents and restricted cash		$ (859)
Accounts payable	$ (1,423)