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Deferred Costs (Details) - USD ($)
3 Months Ended
Apr. 30, 2024
Apr. 30, 2023
Jan. 31, 2024
Deferred Costs [Abstract]      
Deferred costs $ 23,967,000   $ 23,916,000
Amortization of deferred costs 4,000,000 $ 5,000,000  
Impairment losses recorded in relation to the costs capitalized $ 0 $ 0