PENSION, OTHER POST RETIREMENT BENEFIT AND PROFIT SHARING PLANS (Information about Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified								12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Fidelity Advisor New Insight [Member]	Dec. 31, 2013 Fidelity Low Price Stock Fund [Member]	Dec. 31, 2013 Franklin Mutual Discovery Z Fund [Member]	Dec. 31, 2013 T. Rowe Price Equity Income Fund [Member]	Dec. 31, 2013 Pioneer Multi-Asset Floating Rate Fund [Member]	Dec. 31, 2013 Equity Securities [Member]	Dec. 31, 2012 Equity Securities [Member]	Dec. 31, 2013 Debt Securities [Member]	Dec. 31, 2012 Debt Securities [Member]	Dec. 31, 2013 Cash and Cash Equivalents [Member]	Dec. 31, 2012 Cash and Cash Equivalents [Member]	Dec. 31, 2013 Pension Benefits [Member]	Dec. 31, 2012 Pension Benefits [Member]	Dec. 31, 2011 Pension Benefits [Member]	Dec. 31, 2010 Pension Benefits [Member]	Dec. 31, 2013 Pension Benefits [Member] Level 1 [Member]	Dec. 31, 2012 Pension Benefits [Member] Level 1 [Member]	Dec. 31, 2013 Pension Benefits [Member] Level 2 [Member]	Dec. 31, 2012 Pension Benefits [Member] Level 2 [Member]	Dec. 31, 2013 Pension Benefits [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Cash [Member]	Dec. 31, 2012 Pension Benefits [Member] Cash [Member]	Dec. 31, 2013 Pension Benefits [Member] U.S. Agency Debt Obligations [Member]	Dec. 31, 2012 Pension Benefits [Member] U.S. Agency Debt Obligations [Member]	Dec. 31, 2013 Pension Benefits [Member] U.S. Agency Debt Obligations [Member] Level 2 [Member]	Dec. 31, 2012 Pension Benefits [Member] U.S. Agency Debt Obligations [Member] Level 2 [Member]	Dec. 31, 2013 Pension Benefits [Member] U.S. Agency Debt Obligations [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] U.S. Agency Debt Obligations [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Mutual Funds [Member]	Dec. 31, 2012 Pension Benefits [Member] Mutual Funds [Member]	Dec. 31, 2013 Pension Benefits [Member] Mutual Funds [Member] Level 1 [Member]	Dec. 31, 2012 Pension Benefits [Member] Mutual Funds [Member] Level 1 [Member]	Dec. 31, 2013 Pension Benefits [Member] Mutual Funds [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Mutual Funds [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Common Stock [Member]	Dec. 31, 2012 Pension Benefits [Member] Common Stock [Member]	Dec. 31, 2013 Pension Benefits [Member] Common Stock [Member] Level 1 [Member]	Dec. 31, 2012 Pension Benefits [Member] Common Stock [Member] Level 1 [Member]	Dec. 31, 2013 Pension Benefits [Member] Common Stock [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Common Stock [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Money Market Funds [Member]	Dec. 31, 2012 Pension Benefits [Member] Money Market Funds [Member]	Dec. 31, 2013 Pension Benefits [Member] Money Market Funds [Member] Level 2 [Member]	Dec. 31, 2012 Pension Benefits [Member] Money Market Funds [Member] Level 2 [Member]	Dec. 31, 2013 Pension Benefits [Member] Money Market Funds [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Money Market Funds [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Brokered Certificates of Deposit [Member]	Dec. 31, 2012 Pension Benefits [Member] Brokered Certificates of Deposit [Member]	Dec. 31, 2013 Pension Benefits [Member] Brokered Certificates of Deposit [Member] Level 2 [Member]	Dec. 31, 2012 Pension Benefits [Member] Brokered Certificates of Deposit [Member] Level 2 [Member]	Dec. 31, 2013 Pension Benefits [Member] Brokered Certificates of Deposit [Member] Level 3 [Member]	Dec. 31, 2012 Pension Benefits [Member] Brokered Certificates of Deposit [Member] Level 3 [Member]	Dec. 31, 2013 Pension Benefits [Member] Total Investments [Member]	Dec. 31, 2012 Pension Benefits [Member] Total Investments [Member]	Dec. 31, 2013 Pension Benefits [Member] Accrued Interest and Dividends [Member]	Dec. 31, 2012 Pension Benefits [Member] Accrued Interest and Dividends [Member]	Dec. 31, 2013 Basic Plan [Member] BancorpSouth, Inc. (Parent Company Only) [Member]	Dec. 31, 2012 Basic Plan [Member] BancorpSouth, Inc. (Parent Company Only) [Member]
Actual weighted-average asset allocation [Abstract]
Actual weighted average asset allocations	100.00%	100.00%						34.50%	32.92%	62.10%	61.19%	3.40%	5.89%																																															1.06%	0.58%
Target asset allocations [Abstract]
Target Plan Asset Allocations 2014								33.00%		67.00%		0.00%
Expected future benefit payments:
2014	$ 12,157
2015	13,852
2016	12,688
2017	13,138
2018	13,611
2019-2023	72,519
Fair value of plan assets [Abstract]
Fair value of plan assets														196,447	203,704	195,004	197,536							57	88	64,298	49,886					121,178	138,904					2,091	1,196					5,303	9,356					2,973	3,784					195,900	203,214	547	490	2,100	1,200
Fair value of plan assets														195,843	203,126			123,269	140,100	72,574	63,026					64,298	49,886	64,298	49,886			121,178	138,904	121,178	138,904			2,091	1,196	2,091	1,196			5,303	9,356	5,303	9,356			2,973	3,784	2,973	3,784
Threshold of plan asset value at which individual investments are disclosed (in hundredths)	5.00%
Fair value of investments that represent 5% or more of total plan asset value			$ 11,285	$ 14,266	$ 11,486	$ 11,337	$ 25,093