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Cash Value of Life Insurance - Summary of Activity in Balance of Cash Value of Life Insurance (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 USD ($) company employee policy | Dec. 31, 2021 USD ($) company policy employee | Dec. 31, 2020 USD ($)
Insurance [Line Items] |  |  |
Beginning balance | $ 117,857 | $ 118,870 |
Increase in cash value of life insurance | 2,858 | 2,775 | $ 2,949
Gain on death benefit | 309 | 702 | 498
Insurance proceeds receivable reclassified to other assets | (891) | (4,490) |
Ending balance | 133,742 | 117,857 | $ 118,870
End of period death benefit | $ 223,427 | $ 193,318 |
Number of policies owned (in policies) | policy | 216 | 176 |
Insurance companies used (in companies) | company | 14 | 14 |
Current and former employees and directors covered (in employees) | employee | 79 | 59 |
FNBB |  |  |
Insurance [Line Items] |  |  |
Acquired policies from business combination | $ 13,609 | $ 0 |

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- Definition Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Cash Value Of Life Insurance + References No definition available. + Details
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- Definition Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount of excess (deficiency) of insurance recovery over the loss incurred from an insured event. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6397426&loc=d3e17499-108355 + Details
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