Renasant Corporation (Parent Company Only) Condensed Financial Information (Details 1) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
		Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income
Other dividends										$ 215	$ 396	$ 248
Total noninterest income		$ 31,442	$ 32,079	$ 22,879	$ 21,870	$ 19,941	$ 22,531	$ 19,443	$ 18,594	108,270	80,509	71,891
Expenses		5,437	5,688	5,155	5,385	5,629	5,931	6,139	6,228	21,665	23,927	23,471
Income before income tax benefit and equity in undistributed net income of bank subsidiary		31,309	23,962	22,236	22,257	22,958	22,643	20,794	19,492	99,764	85,887	45,746
Income tax benefit		10,149	7,742	6,842	7,017	7,361	7,108	5,941	5,895	31,750	26,305	12,259
Net income		$ 21,160	$ 16,220	$ 15,394	$ 15,240	$ 15,597	$ 15,535	$ 14,853	$ 13,597	68,014	59,582	33,487
Renasant Corporation
Income
Dividends from bank subsidiary	[1]									24,557	21,518	19,303
Interest income from bank subsidiary	[1]									7	8	10
Other dividends										266	749	492
Other income										58	71	39
Total noninterest income										24,888	22,346	19,844
Expenses										6,823	5,513	3,892
Income before income tax benefit and equity in undistributed net income of bank subsidiary										18,065	16,833	15,952
Income tax benefit										(2,521)	(1,846)	(1,352)
Equity in undistributed net income of bank subsidiary	[1]									47,428	40,903	16,183
Net income										$ 68,014	$ 59,582	$ 33,487

[1] Eliminates in consolidation