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Pay vs Performance Disclosure - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2023
Jul. 31, 2022
Jul. 31, 2023
Jul. 31, 2022
Pay vs Performance Disclosure        
Net loss $ (111,000) $ (210,000) $ (230,000) $ (453,000)