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Fair Value Measurements and Disclosure - Summary of Quantitative Information with Regards to Level 3 Fair Value Measurements (Detail) - Fair Value, Inputs, Level 3 [Member] $ in Thousands | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Loans Receivable, Fair Value Disclosure | $ 1,470,144 | $ 1,347,137
Measurement Input Discount Rate Adjustment [Member] | Impaired Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Loans Receivable Measurement Input |  | 6
Measurement Input Discount Rate Adjustment [Member] | Collateral dependent loan [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Loans Receivable Measurement Input | 0 |
Measurement Input Discount Rate Adjustment [Member] | Valuation Technique Collateral [Member] | Weighted Average [Member] | Impaired Loans [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Loans Receivable, Fair Value Disclosure |  | $ 30
Loans Receivable Measurement Input |  | (6)
Measurement Input Discount Rate Adjustment [Member] | Valuation Technique Collateral [Member] | Weighted Average [Member] | Collateral dependent loan [Member] |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Loans Receivable, Fair Value Disclosure | $ 4,485 |
Loans Receivable Measurement Input | 0 |

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- Definition Loans receivable measurement input. + References No definition available. + Details
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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. + References No definition available. + Details
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- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Publisher FASB -URI https://asc.fasb.org//310-10/tableOfContent + Details
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