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Leases | Lease Disclosure Related to Periods Prior to Adoption of New Lease Standard (Details) - USD ($)
$ in Thousands
12 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Jan. 31, 2018
Disclosures Related to Periods Prior to Adoption of New Lease Standard [Abstract]      
Operating Leases, Rent Expense $ 86,000 $ 87,200 $ 83,600
2020   66,469  
2021   58,435  
2022   38,808  
2023   28,587  
2024   21,962  
Thereafter   37,400  
Total payments   $ 251,661