Renasant Corporation (Parent Company Only) Condensed Financial Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income
Other dividends									$ 396		$ 248		$ 199
Total noninterest income	19,971	22,563	19,471	18,616	18,341	18,935	17,317	17,335	80,620		71,971		68,711
Expenses	5,580	5,886	6,108	6,206	6,408	5,890	5,541	5,564	23,780		23,403		25,975
Income before income tax benefit and equity in undistributed net income of bank subsidiary	22,958	22,643	20,794	19,492	15,880	8,770	10,987	10,109	85,887		45,746		33,465
Income tax benefit	7,361	7,108	5,941	5,895	4,620	2,133	2,968	2,538	26,305		12,259		6,828
Net income	15,597	15,535	14,853	13,597	11,260	6,637	8,019	7,571	59,582		33,487		26,637
Renasant Corporation
Income
Dividends from bank subsidiary									21,518	[1]	19,303	[1]	18,117	[1]
Interest income from bank subsidiary									8	[1]	10	[1]	16	[1]
Other dividends									749		492		114
Other income									71		39		22
Total noninterest income									22,346		19,844		18,269
Expenses									5,513		3,892		3,190
Income before income tax benefit and equity in undistributed net income of bank subsidiary									16,833		15,952		15,079
Income tax benefit									(1,846)		(1,352)		(1,160)
Equity in undistributed net income of bank subsidiary									40,903	[1]	16,183	[1]	10,398	[1]
Net income									$ 59,582		$ 33,487		$ 26,637

[1] Eliminates in consolidation