JUNIOR SUBORDINATED DEBT SECURITIES 2013 (Details) (USD $)	12 Months Ended			12 Months Ended				12 Months Ended	0 Months Ended
	Dec. 31, 2002	Dec. 31, 2013	Mar. 01, 2007	Dec. 31, 2013 Unsecured Revolving Loan [Member]	Dec. 31, 2013 Multi-Draw Term Loan [Member]	Dec. 31, 2013 Junior Subordinated Debt Securities of BancorpSouth Capital Trust I [Member]	Dec. 31, 2002 Junior Subordinated Debt Securities of BancorpSouth Capital Trust I [Member]	Dec. 31, 2004 Junior Subordinated Debt Securities of Business Holding Company Trust I [Member]	Dec. 01, 2005 Junior Subordinated Debt Securities of American State Capital Trust I [Member]	Mar. 01, 2007 Junior Subordinated Debt Securities of Signature Bancshares Preferred Trust I [Member]	Mar. 01, 2007 Junior Subordinated Debt Securities of City Bancorp Preferred Trust I [Member]
Debt Instrument [Line Items]
Junior Subordinated Debt Securities							$ 128,900,000	$ 6,200,000	$ 6,700,000	$ 8,200,000	$ 10,300,000
Interest rate						8.15%	8.15%
Number of shares of trust preferred securities							5,000,000	6,000	6,500	8,000	10,000
Trust preferred securities, value per share							$ 25
Maturity date				Aug. 08, 2015	Aug. 08, 2018			Apr. 07, 2034	Apr. 07, 2034	Oct. 08, 2033	Mar. 15, 2035
Redemption date	Aug. 12, 2013
Write-off of unamortized issuance costs						2,900,000
Credit Agreement borrowing capacity		689,000		25,000,000	60,000,000
Credit Agreement amount outstanding					$ 50,000,000
Interest rate spread over LIBOR			3.00%					2.85%	2.80%		2.20%