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Loans Receivable - Summary of Allowance for Loan Losses On Loans Receivables (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Receivables [Abstract] |  |  |  |
Provision for credit losses | $ (182) | $ 200 | $ 2,546 | $ 200
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease) | 0 | $ 200 | 1,340 | $ 200
Increase decrease in reserve for unfunded liabilities | $ 182 |  | 501 |
Financing receivable allowance for credit loss not purchased with credit deterioration |  |  | $ 1,700 |

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- Definition Financing receivable not purchased with credit deterioration allowance for credit loss at acquisition date. + References No definition available. + Details
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Period Type: | duration

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- Definition Increase decrease in reserve for unfunded liabilities. + References No definition available. + Details
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Period Type: | duration

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- Definition Amount of increase (decrease) in allowance for credit loss on financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (a) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(2) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1 + Details
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Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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