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Business Segments - Financial Information by Business Segment (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Segment Reporting Information [Line Items] |  |
Interest and dividend income | $ 253,232 | $ 195,333
Less: Interest expense | 94,713 | 81,367
NET INTEREST INCOME | 158,519 | 113,966
Less: Provision for credit losses | 68,883 | 4,014
Net interest income after provision for credit losses | 89,636 | 109,952
Non-interest income: |  |
Trust fees | 8,697 | 8,082
Service charges on deposits | 8,587 | 6,784
Digital banking income | 5,404 | 4,704
Net swap fee and valuation income | 961 | 1,563
Net securities brokerage revenue | 2,701 | 2,548
Bank-owned life insurance | 3,428 | 2,067
Net securities (losses) gains | (318) | 537
Net (loss) gain on other real estate owned and other assets | (40) | 154
Mortgage banking income | 1,140 | 693
Other income | 4,105 | 3,497
Less : |  |
Salaries and wages | 48,577 | 42,997
Employee benefits | 12,970 | 12,184
Net occupancy | 7,778 | 6,623
Equipment and software | 13,050 | 10,008
Marketing | 2,382 | 1,885
FDIC insurance | 4,187 | 3,448
Merger-related and restructuring | 20,010 | 0
Amortization of intangibles | 4,223 | 2,092
Segment (loss) profit before provision for income taxes | (9,665) | 43,390
Provision for income taxes | (673) | 7,697
Segment (loss) profit | (8,992) | 35,693
Reconciliation of segment (loss) profit |  |
Preferred stock dividends | (2,531) | (2,531)
Net (loss) income available to common shareholders | (11,523) | 33,162
Operating Segments [Member] |  |
Non-interest income: |  |
Total revenues | 124,301 | 140,581
Less : |  |
Segment (loss) profit | (8,992) | 35,693
Reconciliation of segment (loss) profit |  |
Preferred stock dividends | (2,531) | (2,531)
Net (loss) income available to common shareholders | (11,523) | 33,162
Community Banking [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Interest and dividend income | 253,232 | 195,333
Less: Interest expense | 89,649 | 76,264
NET INTEREST INCOME | 163,583 | 119,069
Less: Provision for credit losses | 68,883 | 4,014
Net interest income after provision for credit losses | 94,700 | 115,055
Non-interest income: |  |
Service charges on deposits | 8,587 | 6,784
Digital banking income | 5,404 | 4,704
Net swap fee and valuation income | 961 | 1,563
Net securities brokerage revenue | 2,701 | 2,548
Net insurance services revenue | 955 | 944
Bank-owned life insurance | 3,428 | 2,067
Payment processing fees | 891 | 829
Net securities (losses) gains | (318) | 537
Net (loss) gain on other real estate owned and other assets | (40) | 154
Mortgage banking income | 1,140 | 693
Other income | 2,250 | 1,724
Total revenues | 120,659 | 137,602
Less : |  |
Salaries and wages | 46,615 | 41,145
Employee benefits | 12,490 | 11,700
Net occupancy | 7,721 | 6,571
Equipment and software | 12,993 | 10,001
Miscellaneous taxes | 4,233 | 3,159
Professional services | 3,655 | 3,004
Marketing | 2,362 | 1,870
FDIC insurance | 4,187 | 3,448
Supplies | 1,685 | 1,296
Telecommunications | 1,210 | 1,263
General administration | 1,370 | 1,360
Merger-related and restructuring | 13,691 |
Amortization of intangibles | 4,183 | 2,044
Other segment items | 4,886 | 4,224
Segment (loss) profit before provision for income taxes | (622) | 46,517
Provision for income taxes | 109 | 8,425
Segment (loss) profit | (731) | 38,092
Trust and Investment Services [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Less: Interest expense | 935 | 1,028
NET INTEREST INCOME | (935) | (1,028)
Net interest income after provision for credit losses | (935) | (1,028)
Non-interest income: |  |
Trust fees | 6,673 | 6,099
WesMark fees | 2,024 | 1,983
Total revenues | 7,762 | 7,054
Less : |  |
Salaries and wages | 1,962 | 1,852
Employee benefits | 480 | 484
Net occupancy | 57 | 52
Equipment and software | 57 | 7
Miscellaneous taxes | 1 | 3
Professional services | 138 | 76
Marketing | 20 | 15
Supplies | 53 | 42
General administration | 28 | 33
Amortization of intangibles | 40 | 48
Corporate overhead expenses | 1,580 | 1,523
Other segment items | 31 | 60
Segment (loss) profit before provision for income taxes | 3,315 | 2,859
Provision for income taxes | 696 | 600
Segment (loss) profit | 2,619 | 2,259
Corporate Other [Member] | Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Less: Interest expense | 4,129 | 4,075
NET INTEREST INCOME | (4,129) | (4,075)
Net interest income after provision for credit losses | (4,129) | (4,075)
Non-interest income: |  |
Other income | 9 |
Total revenues | (4,120) | (4,075)
Less : |  |
Professional services | 1,825 | 1,922
General administration | 130 | 25
Merger-related and restructuring | 6,319 |
Other segment items | (36) | (36)
Segment (loss) profit before provision for income taxes | (12,358) | (5,986)
Provision for income taxes | (1,478) | (1,328)
Segment (loss) profit | $ (10,880) | $ (4,658)

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