Renasant Corporation (Parent Company Only) Condensed Financial Information - Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income
Other dividends	$ 8,853	$ 1,689	$ 1,189
Total noninterest income	149,253	226,984	235,532
Expenses	60,512	44,684	71,335
Income tax benefit	45,240	46,935	19,840
Net income (loss)	166,068	175,892	83,651
Renasant Corporation
Income
Dividends from bank subsidiary	68,114	80,965	81,443
Interest income from bank subsidiary	5	7	9
Other dividends	134	80	93
Other income	85	32	74
Total noninterest income	68,338	81,084	81,619
Expenses	24,264	18,661	15,179
Income before income taxes	44,074	62,423	66,440
Income tax benefit	(6,231)	(4,795)	(3,889)
Equity in undistributed net income of bank subsidiary	115,763	108,674	13,322
Net income (loss)	$ 166,068	$ 175,892	$ 83,651