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Renasant Corporation (Parent Company Only) Condensed Financial Information - Statements of Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income |  |  |  |  |  |  |  |  |  |  |
Other dividends |  |  |  |  |  |  |  |  | $ 5,892 | $ 3,076 | $ 2,314
Total noninterest income | $ 37,456 | $ 37,953 | $ 41,960 | $ 35,885 | $ 36,374 | $ 38,053 | $ 35,581 | $ 33,953 | 153,254 | 143,961 | 132,140
Expenses | 24,263 | 25,651 | 25,062 | 23,947 | 21,648 | 18,356 | 14,185 | 11,140 | 98,923 | 65,329 | 37,853
Income before income tax benefit and equity in undistributed net income of bank subsidiary | 47,839 | 48,578 | 60,570 | 58,700 | 57,518 | 40,496 | 47,134 | 43,499 | 215,687 | 188,647 | 159,869
Income tax benefit | 9,424 | 11,132 | 13,945 | 13,590 | 13,098 | 8,532 | 10,424 | 9,673 | 48,091 | 41,727 | 67,681
Net income | $ 38,415 | $ 37,446 | $ 46,625 | $ 45,110 | $ 44,420 | $ 31,964 | $ 36,710 | $ 33,826 | 167,596 | 146,920 | 92,188
Renasant Corporation |  |  |  |  |  |  |  |  |  |  |
Income |  |  |  |  |  |  |  |  |  |  |
Dividends from bank subsidiary |  |  |  |  |  |  |  |  | 132,563 | 53,381 | 34,416
Interest income from bank subsidiary |  |  |  |  |  |  |  |  | 9 | 8 | 8
Other dividends |  |  |  |  |  |  |  |  | 175 | 137 | 94
Other income |  |  |  |  |  |  |  |  | 138 | 121 | 588
Total noninterest income |  |  |  |  |  |  |  |  | 132,885 | 53,647 | 35,106
Expenses |  |  |  |  |  |  |  |  | 16,050 | 13,869 | 12,649
Income before income tax benefit and equity in undistributed net income of bank subsidiary |  |  |  |  |  |  |  |  | 116,835 | 39,778 | 22,457
Income tax benefit |  |  |  |  |  |  |  |  | (4,077) | (3,523) | (3,761)
Equity in undistributed net income of bank subsidiary |  |  |  |  |  |  |  |  | 46,684 | 103,619 | 65,970
Net income |  |  |  |  |  |  |  |  | $ 167,596 | $ 146,920 | $ 92,188

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