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Non-Interest Expense (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Changes in Noncontrolling Interest [Line Items] |  |  |
Salaries and employee benefits | $ 256,966 | $ 238,885 | $ 170,755
Occupancy and equipment | 60,303 | 53,417 | 36,631
Data processing expense | 36,329 | 34,942 | 24,280
Merger and acquisition expenses | 0 | 49,594 | 1,886
Other operating expenses: |  |  |
Advertising | 8,850 | 7,974 | 4,855
Amortization of intangibles | 9,685 | 8,853 | 5,683
Electronic banking expense | 14,313 | 13,632 | 9,817
Directors' fees | 1,814 | 1,491 | 1,614
Due from bank service charges | 1,115 | 1,255 | 1,044
FDIC and state assessment | 25,530 | 8,428 | 5,472
Other expense | 32,967 | 27,905 | 18,086
Insurance | 3,567 | 3,705 | 3,118
Legal and accounting | 5,230 | 9,401 | 3,703
Other professional fees | 8,815 | 8,881 | 6,950
Operating supplies | 3,138 | 3,120 | 1,915
Postage | 2,081 | 2,078 | 1,283
Telephone | 2,160 | 1,890 | 1,425
Total other operating expenses | 119,265 | 98,789 | 64,965
Total non-interest expense | 472,863 | 475,627 | 298,517
Hurricane expense |  |  |
Other operating expenses: |  |  |
Other expense | $ 0 | $ 176 | $ 0

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- Definition FDIC and state assessment (income) expenses. + References No definition available. + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 720 -SubTopic 35 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483406/720-35-50-1 + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482686/350-30-45-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-2 + Details
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