Real Estate and Other Activities - Summary of Activity in Credit Loss Reserves (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Receivables [Abstract]
Balance at beginning of the year	$ 48,527	$ 8,726
Provision for credit loss	5,412
Expected credit losses related to financial instruments sold or repaid	(6)	(4)
Balance at end of year	$ 53,933	$ 8,722

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant