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Loans Held for Sale - Composition of Loans Held for Sale (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Multifamily loans, at lower of cost or fair value	$ 4,079	$ 0
Total commercial loans held for sale	4,079	0
Home equity conversion mortgages, at lower of cost or fair value	507	507
Residential mortgage loans, at fair value	322	15,747
Personal installment loans, at lower of cost or fair value	133,801	0
Other installment loans, at lower of cost or fair value	189,603	0
Total consumer loans held for sale	324,233	16,254
Loans held for sale	328,312	16,254
Medical loans, held for sale	200,000
Personal loans, held-for-sale	127,900
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for sale	$ 6,200	$ 500

X

- Definition

Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Consumer

+ References

No definition available.

+ Details

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- Definition

Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Consumer, Home Equity Conversion

+ References

No definition available.

+ Details

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- Definition

Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Consumer, Other Installment Loans

+ References

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- Definition

Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Installment Loans

+ References

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- Definition

Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Commercial, Real Estate1

+ References

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- Definition

Loans Receivable Held-for-sale, Net, Not Part of Disposal Group, Mortgage1

+ References

No definition available.

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- Definition

Medical Loans, Held For Sale

+ References

No definition available.

+ Details

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- Definition

MultiFamilyCommercialLoansHeldForSale

+ References

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- Definition

Personal Loans, Held-For-sale, Originated During Period

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124265262&loc=d3e48678-111004

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