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Leases - Lease Cost Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2020
Nov. 02, 2019
Oct. 31, 2020
Nov. 02, 2019
General and Administrative Expense [Member]        
Operating Lease Costs $ 120 $ 119 $ 362 $ 329