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Trade Accounts Receivable - Provision for credit losses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Trade Accounts Receivable    
Balance $ 1,860 $ 2,330
Current period provision for expected losses 1,068 1,007
Write-offs charged against the provision (1,341) (1,456)
Effect of movements in foreign exchange (42) (21)
Balance $ 1,545 $ 1,860