Quarterly report pursuant to Section 13 or 15(d)

Loans Held for Sale, at Fair Value - Schedule of Mortgage Loans Held For Sale that were Greater Than 90 Days Past Due And On Non-Accrual Status (Detail)

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Loans Held for Sale, at Fair Value - Schedule of Mortgage Loans Held For Sale that were Greater Than 90 Days Past Due And On Non-Accrual Status (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Mortgage loans held for sale, aggregate unpaid principal balance $ 7,368 $ 5,541
Difference (558) 12
Loans 90 days or more past due and on non-accrual status    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Mortgage loans held for sale, at fair value 6,810 5,553
Residential mortgage loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Mortgage loans held for sale, aggregate unpaid principal balance 5,647 2,736
Residential mortgage loans | Loans 90 days or more past due and on non-accrual status    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Mortgage loans held for sale, at fair value 6,143 2,136
Commercial mortgage loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Mortgage loans held for sale, aggregate unpaid principal balance 1,225 3,405
Commercial mortgage loans | Loans 90 days or more past due and on non-accrual status    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Mortgage loans held for sale, at fair value $ 1,163 $ 2,817