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Unaudited Condensed Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
3 Months Ended
Apr. 30, 2021
Apr. 30, 2020
Statement of Comprehensive Income [Abstract]    
Net loss $ (3,909) $ (4,698)
Other comprehensive income:    
Pension adjustments, net of tax effect 327 345
Net comprehensive loss $ (3,582) $ (4,353)