Renasant Corporation (Parent Company Only) Condensed Financial Information - Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 575,992	$ 1,877,965
Accrued interest receivable on bank balances	49,850	41,692
Other assets	298,385	183,841
Total assets	16,988,176	16,810,311	$ 14,929,612
Liabilities and shareholders’ equity
Other liabilities	224,829	209,578
Shareholders’ equity	2,136,016	2,209,853	$ 2,132,733	$ 2,125,689
Total liabilities and shareholders’ equity	16,988,176	16,810,311
Renasant Corporation
Assets
Cash and cash equivalents	167,727	184,426
Investments	0	2,009
Investment in bank subsidiary	2,391,721	2,477,917
Accrued interest receivable on bank balances	3	4
Other assets	28,468	28,751
Total assets	2,587,919	2,693,107
Liabilities and shareholders’ equity
Junior subordinated debentures	112,042	111,373
Subordinated notes	316,091	359,419
Other liabilities	23,770	12,462
Shareholders’ equity	2,136,016	2,209,853
Total liabilities and shareholders’ equity	2,587,919	2,693,107
Cash collateral	$ 1,889	$ 1,857