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Impact of the Coronavirus Pandemic - Summary of Expenses Recorded (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 31, 2020
Apr. 30, 2020
Jul. 31, 2020
Extraordinary And Unusual Items [Abstract]      
Inventory obsolescence reserves $ (21,673) $ 43,327 $ 21,654
Allowance for doubtful accounts $ (2,200) 5,800 3,600
Store impairment   $ 14,528 $ 14,528