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Segment Reporting (Details) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Jan. 31, 2023
Operating Profit (Loss) $ 1,938 $ 1,449  
Total assets 145,094   $ 142,327
Total Segment [Member]      
Net sales 28,700 27,280  
External sales 28,700 27,280  
Intersegment sales 10,080 9,220  
Operating Profit (Loss) 1,940 1,450  
Total assets 145,090   142,640
Other Foreign [Member]      
Net sales 3,080 2,200  
External sales 2,270 1,810  
Intersegment sales 820 390  
Operating Profit (Loss) 660 210  
Total assets 9,550   9,200
Europe UK      
Net sales 4,020 1,980  
External sales 4,020 1,980  
Operating Profit (Loss) 210 (260)  
Total assets 11,490   8,010
Asia      
Net sales 11,120 14,660  
External sales 3,670 7,240  
Intersegment sales 7,440 7,420  
Operating Profit (Loss) 850 2,560  
Total assets 35,920   54,840
Latin America      
Net sales 3,180 1,900  
External sales 3,140 1,900  
Intersegment sales 40 0  
Operating Profit (Loss) 880 300  
Total assets 9,310   7,450
Intersegment [Member]      
Net sales (10,080) (9,220)  
Operating Profit (Loss) 1,100 610  
USA      
Net sales 13,610 12,240  
External sales 12,270 11,230  
Intersegment sales 1,340 1,010  
Operating Profit (Loss) (1,820) (2,060)  
Total assets 66,880   52,340
Mexico      
Net sales 1,240 1,240  
External sales 800 840  
Intersegment sales 440 400  
Operating Profit (Loss) (390) (540)  
Total assets 5,830   4,650
Canada      
Net sales 2,530 2,280  
External sales 2,530 2,280  
Operating Profit (Loss) 450 $ 630  
Total assets $ 6,110   $ 6,150