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Loans - Loans (Detail) (Parenthetical) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans receivable | $ 6,020,785 | $ 5,967,133
Real Estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans receivable | 4,699,341 | 4,567,853
Real Estate | Home Equity Loans and Lines - Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans receivable | 2,000 | 2,400
Real Estate | Personal Loans - Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total gross loans receivable | $ 4,200 | $ 4,600

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