Annual report [Section 13 and 15(d), not S-K Item 405]

Loans Receivable - Loans Receivable (Parenthetical) (Detail)

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Loans Receivable - Loans Receivable (Parenthetical) (Detail) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans receivable $ 6,251,377 $ 6,182,434
Real Estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans receivable 4,900,924 4,852,400
Real Estate | Home Equity Loans and Lines - Residential    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans receivable 1,300 1,900
Real Estate | Personal Loans - Residential    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans receivable $ 4,100 $ 4,500