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CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Interest income: |  |  |
Interest and fees on loans | $ 445,167 | $ 335,075 | $ 308,355
Interest and dividends on taxable investments | 82,368 | 95,371 | 68,607
Interest and dividends on nontaxable investments | 13,853 | 13,283 | 10,458
Total interest income | 541,388 | 443,729 | 387,420
Interest expense: |  |  |
Interest on deposits | 85,337 | 15,044 | 11,631
Interest on borrowings | 18,766 | 8,055 | 1,377
Total interest expense | 104,103 | 23,099 | 13,008
Net interest income | 437,285 | 420,630 | 374,412
Provision for credit losses | 11,203 | 14,773 | (8,839)
Net interest income after provision for credit losses | 426,082 | 405,857 | 383,251
Noninterest revenues: |  |  |
Deposit service fees | 63,062 | 66,850 | 59,212
Mortgage banking | 595 | 390 | 1,772
Other banking services | 6,315 | 4,644 | 3,674
Employee benefit services | 117,961 | 115,408 | 114,328
Insurance services | 47,094 | 39,810 | 33,992
Wealth management services | 31,941 | 31,667 | 33,240
Loss on sales of investment securities | (52,329) | 0 | 0
Gain on debt extinguishment | 242 | 0 | 0
Unrealized (loss) gain on equity securities | (47) | (44) | 17
Total noninterest revenues | 214,834 | 258,725 | 246,235
Noninterest expenses: |  |  |
Salaries and employee benefits | 281,803 | 257,339 | 241,501
Data processing and communications | 57,585 | 54,099 | 51,003
Occupancy and equipment | 42,550 | 42,413 | 41,240
Amortization of intangible assets | 14,511 | 15,214 | 14,051
Legal and professional fees | 15,921 | 14,018 | 11,723
Business development and marketing | 15,731 | 13,095 | 9,319
Litigation accrual | 5,800 | 0 | (100)
Acquisition expenses | 63 | 5,021 | 701
Acquisition-related contingent consideration adjustment | 3,280 | (300) | 200
Restructuring expenses | 1,163 | 0 | 0
Other expenses | 34,278 | 23,369 | 18,500
Total noninterest expenses | 472,685 | 424,268 | 388,138
Income before income taxes | 168,231 | 240,314 | 241,348
Income taxes | 36,307 | 52,233 | 51,654
Net income | $ 131,924 | $ 188,081 | $ 189,694
Basic earnings per share(in dollar per share) | $ 2.45 | $ 3.48 | $ 3.51
Diluted earnings per share(in dollar per share) | $ 2.45 | $ 3.46 | $ 3.48

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