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
Mar. 31, 2022
Dec. 31, 2021
Mortgage Loans Held For Sale That Were Greater Than 90 Days Past Due And OnNonAccrualStatus [Line Items]    
Mortgage loans held for sale, Aggregate Unpaid Principal Balance $ 6,669 $ 7,076
Mortgage loans held for sale, Total Difference (625) (718)
Residential Mortgage Loans [Member]    
Mortgage Loans Held For Sale That Were Greater Than 90 Days Past Due And OnNonAccrualStatus [Line Items]    
Mortgage loans held for sale, Aggregate Unpaid Principal Balance 3,495 3,195
Commercial Mortgage Loans [Member]    
Mortgage Loans Held For Sale That Were Greater Than 90 Days Past Due And OnNonAccrualStatus [Line Items]    
Mortgage loans held for sale, Aggregate Unpaid Principal Balance 2,676 3,323
Loans 90 Days Or More Past Due And On Non Accrual Status [Member]    
Mortgage Loans Held For Sale That Were Greater Than 90 Days Past Due And OnNonAccrualStatus [Line Items]    
Mortgage loans held for sale, Fair Value 6,044 6,358
Loans 90 Days Or More Past Due And On Non Accrual Status [Member] | Residential Mortgage Loans [Member]    
Mortgage Loans Held For Sale That Were Greater Than 90 Days Past Due And OnNonAccrualStatus [Line Items]    
Mortgage loans held for sale, Fair Value 3,993 3,753
Loans 90 Days Or More Past Due And On Non Accrual Status [Member] | Commercial Mortgage Loans [Member]    
Mortgage Loans Held For Sale That Were Greater Than 90 Days Past Due And OnNonAccrualStatus [Line Items]    
Mortgage loans held for sale, Fair Value $ 2,549 $ 3,163