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Leases - Additional Information (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 USD ($) property relatedParty | Sep. 30, 2024 USD ($) property relatedParty | Dec. 31, 2023 USD ($)
Leases [Abstract] |  |  |
Right of use asset | $ 43,000 | $ 43,000 | $ 42,200
Lease liability | $ 45,848 | $ 45,848 | $ 45,028
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Bank premises and equipment, net | Bank premises and equipment, net | Bank premises and equipment, net
Operating Lease, Liability, Statement of Financial Position [Extensible List] | Accrued interest payable and other liabilities | Accrued interest payable and other liabilities | Accrued interest payable and other liabilities
Number of lease properties | property | 2 | 2 |
Number of related parties | relatedParty | 2 | 2 |
Lease rent expense | $ 35 | $ 97 |
Lease expense rate | 1.37% | 1.25% |

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- Definition Operating leases of lessee rent expenses rate. + References No definition available. + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-4 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Indicates line item in statement of financial position that includes operating lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-2 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-1 + Details
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- Definition Indicates line item in statement of financial position that includes operating lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-2 + Details
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