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Loans Payable, Senior Notes, and Mortgage Company Loan Facility Loans Payable (Details) - USD ($)
$ in Thousands
Oct. 31, 2021
Jan. 31, 2021
Oct. 31, 2020
Debt Instrument [Line Items]      
Loans payable – other $ 364,042   $ 351,257
Loans payable 1,011,534   1,147,955
Senior unsecured term loan [Member]      
Debt Instrument [Line Items]      
Senior unsecured term loan 650,000 $ 800,000 800,000
Deferred issuance costs $ (2,508)   $ (3,302)