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Employee Benefits - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Defined Contribution Plan Disclosure [Line Items] |  |  |
Accrued expense liability for personal paid time off | $ 3.1 | $ 2.5 |
Bank-Owned Life Insurance |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Cash surrender value | $ 53.9 | 52.8 |
Section 401(k) Plan |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Percent of participant contributions (percent) | 75.00% |  |
Percent of employer contribution (up to, percent) | 8.00% |  |
Contributions | $ 2.4 | $ 2.4 | $ 2.4

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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15(a)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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- Details
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