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v3.23.3

Allowance for Credit Losses - Additional Information (Detail) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022 | Jan. 01, 2023
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |  |
Increase in allowance for credit losses |  | $ 5,193,000 |  | $ 4,300,000 |  |  |
Allowance for credit losses | $ 35,280,000 |  |  | 35,280,000 |  | $ 28,511,000 |
Provision for credit losses | 630,000 |  | $ 300,000 | $ 2,111,000 | $ 1,000,000 |  |
Number of days reaching where loans are considered for nonaccrual status |  |  |  | 90 days |  |  |
Conditions where loans are considered for nonaccrual status |  |  |  | A loan may be returned to accruing status only if one of two conditions are met: the loan is well-secured and none of the principal and interest has been past due for a minimum of 90 days or the principal and interest payments are reasonably assured and a sustained period of performance has occurred, generally six months. |  |  |
Loans modified as troubled debt restructuring | $ 0 |  |  | $ 0 |  |  |
Individually evaluated loans |  |  |  | greater than $350 |  |  |
Allowance for loan losses recorded for acquired loans |  |  |  | $ 0 |  | $ 0 |
ASU 2016-13 [Member] |  |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |  |
Allowance for credit losses |  |  |  |  |  |  | $ 37,861,000
ASU 2016-13 [Member] | CECL Loans [Member] |  |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |  |
Allowance for credit losses |  |  |  |  |  |  | $ 7,682,000
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |  |  |  |  |
Accounts Notes And Loans Receivable [Line Items] |  |  |  |  |  |  |
Increase allowance of credit loss |  |  |  | $ 5,193,000 |  |  |

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- Definition Represents the number of days past due for loans and leases to be considered nonaccrual. + References No definition available. + Details
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- Definition Range of amount of individually evaluated loans tested for impairment. + References No definition available. + Details
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- Definition Amount of increase (decrease) in allowance for credit loss on accounts 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 + Details
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- Definition Amount of expense related to loan loss not accounted for as debt securities, with evidence of deterioration of credit quality. + References No definition available. + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481696/310-30-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -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 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
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