Leases - Cash flow and other information (Details) - USD ($)
$ in Thousands
9 Months Ended
Oct. 31, 2020
Nov. 02, 2019
Supplemental cash flow and other information related to operating leases    
Cash paid for operating leases $ 32,870 $ 37,379
Right of use assets obtained in exchange for new operating lease liabilities $ 50,926 $ 55,285
Weighted average remaining lease term - operating leases 5 years 2 months 26 days 4 years 8 months 1 day
Weighted average discount rate - operating leases (as a percent) 3.16% 3.59%