Renasant Corporation (Parent Company Only) Condensed Financial Information - Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income
Other dividends	$ 39,557	$ 30,375	$ 8,853
Total noninterest income	203,660	113,075	149,253
Expenses	375,581	277,992	60,512
Income tax benefit	49,508	32,509	45,240
Net income (loss)	195,457	144,678	166,068
Renasant Corporation
Income
Dividends from bank subsidiary	75,907	72,042	68,114
Interest income from bank subsidiary	39	28	5
Other dividends	270	260	134
Other income	354	919	85
Total noninterest income	76,570	73,249	68,338
Expenses	30,768	30,544	24,264
Income before income taxes	45,802	42,705	44,074
Income tax benefit	(7,842)	(7,577)	(6,231)
Equity in undistributed net income of bank subsidiary	141,813	94,396	115,763
Net income (loss)	$ 195,457	$ 144,678	$ 166,068