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CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Interest income |  |  |
Interest and fees on loans | $ 1,507,726 | $ 1,133,528 | $ 1,157,249
Mortgage loans held-for-sale | 21,195 | 32,169 | 20,077
Interest-bearing deposits with banks | 43,447 | 6,606 | 8,553
Federal funds sold and securities purchased under resale agreements | 4,903 | 173 | 102
Investment securities | 160,600 | 95,286 | 99,634
Trading account securities | 22 | 10 | 37
Federal Home Loan Bank and Federal Reserve Bank stock | 8,622 | 7,067 | 6,891
Brokerage customer receivables | 928 | 645 | 477
Total interest income | 1,747,443 | 1,275,484 | 1,293,020
Interest expense |  |  |
Interest on deposits | 175,202 | 88,119 | 189,178
Interest on Federal Home Loan Bank advances | 30,329 | 19,581 | 18,193
Interest on other borrowings | 14,294 | 9,928 | 12,773
Interest on subordinated notes | 22,004 | 21,983 | 21,961
Interest on junior subordinated debentures | 10,252 | 10,916 | 11,008
Total interest expense | 252,081 | 150,527 | 253,113
Net interest income | 1,495,362 | 1,124,957 | 1,039,907
Provision for credit losses | 78,589 | (59,263) | 214,220
Net interest income after provision for credit losses | 1,416,773 | 1,184,220 | 825,687
Non-interest income |  |  |
Revenue from contracts with customers | 217,719 | 207,172 | 170,130
Mortgage banking | 155,173 | 273,010 | 346,013
Losses on investment securities, net | (20,427) | (1,059) | (1,926)
Fees from covered call options | 14,133 | 3,673 | 2,292
Trading gains (losses), net | 3,752 | 245 | (1,004)
Operating lease income, net | 55,510 | 53,691 | 47,604
Other | 67,724 | 78,373 | 65,851
Total non-interest income | 461,053 | 586,120 | 604,189
Non-interest expense |  |  |
Salaries and employee benefits | 696,107 | 691,669 | 626,076
Software and equipment | 95,885 | 87,515 | 68,496
Operating lease equipment | 38,008 | 40,880 | 37,915
Occupancy, net | 70,965 | 74,184 | 69,957
Data processing | 31,209 | 27,279 | 30,196
Advertising and marketing | 59,418 | 47,275 | 36,296
Professional fees | 33,088 | 29,494 | 27,426
Amortization of other acquisition-related intangible assets | 6,116 | 7,734 | 11,018
FDIC insurance | 28,639 | 27,030 | 25,004
OREO expense, net | (140) | (1,654) | (921)
Other | 117,976 | 101,138 | 108,632
Total non-interest expense | 1,177,271 | 1,132,544 | 1,040,095
Income before taxes | 700,555 | 637,796 | 389,781
Income tax expense | 190,873 | 171,645 | 96,791
Net income | 509,682 | 466,151 | 292,990
Preferred stock dividends | 27,964 | 27,964 | 21,377
Net income applicable to common shares | $ 481,718 | $ 438,187 | $ 271,613
Net income per common share-Basic (usd per share) | $ 8.14 | $ 7.69 | $ 4.72
Net income per common share-Diluted (usd per share) | 8.02 | 7.58 | 4.68
Cash dividends declared per common share (usd per share) | $ 1.36 | $ 1.24 | $ 1.12
Weighted average common shares outstanding (in shares) | 59,205 | 56,994 | 57,523
Dilutive potential common shares (in shares) | 886 | 792 | 496
Average common shares and dilutive common shares (in shares) | 60,091 | 57,786 | 58,019
Wealth management |  |  |
Non-interest income |  |  |
Revenue from contracts with customers | $ 126,614 | $ 124,019 | $ 100,336
Service charges on deposit accounts |  |  |
Non-interest income |  |  |
Revenue from contracts with customers | $ 58,574 | $ 54,168 | $ 45,023

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