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CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Interest income: |  |  |  |
Loans, including fees | $ 224,482 | $ 247,147 | $ 687,183 | $ 714,179
Securities: |  |  |  |
Taxable | 8,276 | 10,655 | 28,133 | 36,438
Tax-exempt | 15,001 | 13,313 | 43,421 | 37,541
Federal funds sold and other | 1,429 | 4,634 | 5,258 | 11,325
Total interest income | 249,188 | 275,749 | 763,995 | 799,483
Interest expense: |  |  |  |
Deposits | 28,401 | 62,531 | 112,826 | 175,736
Securities sold under agreements to repurchase | 77 | 152 | 286 | 439
Federal Home Loan Bank advances and other borrowings | 14,116 | 17,260 | 50,080 | 51,338
Total interest expense | 42,594 | 79,943 | 163,192 | 227,513
Net interest income | 206,594 | 195,806 | 600,803 | 571,970
Provision for credit losses | 16,333 | 8,260 | 184,554 | 22,639
Net interest income after provision for credit losses | 190,261 | 187,546 | 416,249 | 549,331
Noninterest income: |  |  |  |
Total noninterest income | 91,065 | 82,619 | 234,396 | 204,364
Noninterest expense: |  |  |  |
Salaries and employee benefits | 90,103 | 85,919 | 244,470 | 231,915
Equipment and occupancy | 21,622 | 20,348 | 64,626 | 63,523
Other real estate expense, net | 1,795 | 655 | 7,098 | 3,424
Marketing and other business development | 2,321 | 2,723 | 7,714 | 8,953
Postage and supplies | 1,761 | 1,766 | 5,821 | 5,737
Amortization of intangibles | 2,417 | 2,430 | 7,416 | 7,012
Other noninterest expense | 24,258 | 19,100 | 76,086 | 54,114
Total noninterest expense | 144,277 | 132,941 | 413,231 | 374,678
Income before income taxes | 137,049 | 137,224 | 237,414 | 379,017
Income tax expense | 26,404 | 26,703 | 35,969 | 74,215
Net income | 110,645 | 110,521 | 201,445 | 304,802
Preferred stock dividends | (3,798) | 0 | (3,798) | 0
Net income available to common shareholders | $ 106,847 | $ 110,521 | $ 197,647 | $ 304,802
Per share information: |  |  |  |
Basic net income per common share (in dollars per share) | $ 1.42 | $ 1.45 | $ 2.62 | $ 3.99
Diluted net income per common share (in dollars per share) | $ 1.42 | $ 1.44 | $ 2.62 | $ 3.97
Weighted average common shares outstanding: |  |  |  |
Basic (in shares) | 75,240,664 | 76,301,010 | 75,417,663 | 76,480,757
Diluted (in shares) | 75,360,033 | 76,556,309 | 75,544,677 | 76,761,167
Service charges on deposit accounts |  |  |  |
Noninterest income: |  |  |  |
Total noninterest income | $ 9,854 | $ 10,193 | $ 25,796 | $ 27,675
Investment services |  |  |  |
Noninterest income: |  |  |  |
Total noninterest income | 6,734 | 6,270 | 21,944 | 17,607
Insurance sales commissions |  |  |  |
Noninterest income: |  |  |  |
Total noninterest income | 2,284 | 2,252 | 7,755 | 7,327
Gain on mortgage loans sold, net |  |  |  |
Noninterest income: |  |  |  |
Total noninterest income | 19,453 | 7,402 | 47,655 | 18,291
Investment gains (losses) on sales, net |  |  |  |
Noninterest income: |  |  |  |
Total noninterest income | 651 | 417 | 986 | (6,009)
Trust fees |  |  |  |
Noninterest income: |  |  |  |
Total noninterest income | 3,986 | 3,593 | 12,114 | 10,349
Income from equity method investment |  |  |  |
Noninterest income: |  |  |  |
Total noninterest income | 26,445 | 32,248 | 59,245 | 77,799
Other noninterest income |  |  |  |
Noninterest income: |  |  |  |
Total noninterest income | $ 21,658 | $ 20,244 | $ 58,901 | $ 51,325

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