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Loans Receivable - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2024
Jun. 30, 2023
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Allowance for credit loss $ 295,856,000 $ 295,856,000 $ 285,683,000 $ 290,294,000 $ 288,234,000 $ 287,169,000 $ 289,669,000
Deteriorated Credit Quality | Accounting Standards Update 2016-13 | Cumulative Effect Period of Adoption Adjustment              
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Allowance for credit loss 85,200,000 85,200,000     130,700,000    
Mortgage Loans              
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Mortgage loans held for sale 89,300,000 89,300,000     $ 123,400,000    
SBA Loans              
Accounts, Notes, Loans and Financing Receivable [Line Items]              
Loans sold during period 576,469 3,300,000 2,200,000        
Gain on sale of guaranteed portion of loans $ 56,000 $ 254,000 $ 139,000