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Retirement Plans - Aggregate Amounts of Contributions to the 401(k) and ESOP Plans (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Contribution Plan Disclosure [Line Items] |  |  |
Total contributions | $ 9,157 | $ 7,818 | $ 7,173
401(k) contributions [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Aggregate amounts of contributions | 3,410 | 3,011 | 2,856
ESOP contributions [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Aggregate amounts of contributions | $ 5,747 | $ 4,807 | $ 4,317

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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 70 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480794/715-70-50-1 + Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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- Details
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