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Schedule of Revenues and Long-Lived Assets, by Domestic and Foreign Operations Segment (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2020
Oct. 31, 2019
Jan. 31, 2020
Segment Reporting Information [Line Items]          
Total property and equipment, net $ 930,564 $ 890,538 $ 930,564 $ 890,538 $ 890,032
Total net sales 969,607 987,469 2,361,356 2,814,211  
Domestic Operations          
Segment Reporting Information [Line Items]          
Total property and equipment, net 747,273 779,018 747,273 779,018 763,411
Total net sales 847,898 865,586 2,081,151 2,468,991  
Foreign Operations          
Segment Reporting Information [Line Items]          
Total property and equipment, net 183,291 111,520 183,291 111,520 $ 126,621
Total net sales $ 121,709 $ 121,883 $ 280,205 $ 345,220