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Loans Receivable - Additional Information (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Mar. 31, 2025
Dec. 31, 2024
Mar. 31, 2024
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Allowance for credit loss $ 281,869,000 $ 295,856,000 $ 281,869,000 $ 295,856,000 $ 279,944,000 $ 275,880,000 $ 290,294,000 $ 288,234,000
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 55,200,000   55,200,000     76,300,000    
Mortgage Loans                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Mortgage loans held for sale 154,900,000   154,900,000     $ 98,700,000    
SBA Loans                
Accounts, Notes, Loans and Financing Receivable [Line Items]                
Loans sold during period $ 0 576,469 4,000,000 3,300,000        
Gain on sale of guaranteed portion of loans   $ 56,000 $ 288,000 $ 254,000