Renasant Corporation (Parent Company Only) Condensed Financial Information (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 306,224	$ 211,571	$ 161,583	$ 246,648
Other assets	149,522	156,371
Total assets	8,699,851	7,926,496	5,805,129
Liabilities and shareholders’ equity
Other liabilities	95,696	100,580
Total shareholders’ equity	1,232,883	1,036,818	711,651	665,652
Total liabilities and shareholders’ equity	8,699,851	7,926,496
Cash collateral		1,970
Renasant Corporation
Assets
Cash and cash equivalents	121,233	11,107	$ 9,968	$ 9,723
Investments	4,327	9,711
Investment in bank subsidiary	1,291,686	1,101,580
Accrued interest receivable on bank balances	5	5
Intercompany receivable	2,771	2,450
Other assets	11,508	10,560
Total assets	1,431,530	1,135,413
Liabilities and shareholders’ equity
Junior subordinated debentures	95,643	95,095
Subordinated notes	98,127	0
Other liabilities	4,877	3,500
Total shareholders’ equity	1,232,883	1,036,818
Total liabilities and shareholders’ equity	$ 1,431,530	$ 1,135,413