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41002 - Disclosure - Stockholders' Equity (Components of Accumulated Other Comprehensive Income (Loss)) (Details)
(http://www.hancockbank.com/role/DisclosureStockholdersEquityComponentsOfAccumulatedOtherComprehensiveIncomeLossDetails)
TableAccumulated Other Comprehensive Income (Loss) [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0000750577 (http://www.sec.gov/CIK)
Accumulated Other Comprehensive Income (Loss) [Line Items]Period [Axis]
2016-01-01 - 2016-12-31
2015-01-01 - 2015-12-31
2014-01-01 - 2014-12-31
Equity Components [Axis]Equity Components [Axis]Equity Components [Axis]
Available for Sale Securities [Member]HTM Securities Transferred from AFS [Member]Employee Benefit Plans [Member]Cash Flow Hedges [Member]Equity Component [Domain]Available for Sale Securities [Member]HTM Securities Transferred from AFS [Member]Employee Benefit Plans [Member]Cash Flow Hedges [Member]Equity Component [Domain]Available for Sale Securities [Member]HTM Securities Transferred from AFS [Member]Employee Benefit Plans [Member]Cash Flow Hedges [Member]Equity Component [Domain]
Beginning Balance
4,268,000  
(16,795,000) 
(67,890,000) 
(178,000) 
(80,595,000) 
18,001,000  
(19,074,000) 
(48,626,000) 
(375,000) 
(50,074,000) 
8,263,000  
(21,189,000) 
(22,453,000) 
xsi:nil  
(35,379,000) 
Net change in unrealized gain (loss)
(49,839,000) 
xsi:nil  
xsi:nil  
(7,507,000) 
(57,346,000) 
(21,581,000) 
xsi:nil  
xsi:nil  
311,000  
(21,270,000) 
15,413,000  
xsi:nil  
xsi:nil  
(592,000) 
14,821,000  
Reclassification of net (gain) loss realized and included in earnings
(1,912,000) 
xsi:nil  
5,928,000  
xsi:nil  
4,016,000  
(165,000) 
xsi:nil  
3,175,000  
xsi:nil  
3,010,000  
xsi:nil  
xsi:nil  
390,000  
xsi:nil  
390,000  
Valuation adjustment for employee benefit plans
xsi:nil  
xsi:nil  
(12,748,000) 
xsi:nil  
(12,748,000) 
xsi:nil  
xsi:nil  
(33,971,000) 
xsi:nil  
(33,971,000) 
xsi:nil  
xsi:nil  
(41,244,000) 
xsi:nil  
(41,244,000) 
Amortization of unrealized net loss on securities transferred to held to maturity
xsi:nil  
3,830,000  
xsi:nil  
xsi:nil  
3,830,000  
xsi:nil  
3,530,000  
xsi:nil  
xsi:nil  
3,530,000  
xsi:nil  
3,297,000  
xsi:nil  
xsi:nil  
3,297,000  
Income tax (benefit) expense
(18,804,000) 
1,427,000  
(2,209,000) 
(2,725,000) 
(22,311,000) 
(8,013,000) 
1,251,000  
(11,532,000) 
114,000  
(18,180,000) 
5,675,000  
1,182,000  
(14,681,000) 
(217,000) 
(8,041,000) 
Ending Balance
(28,679,000) 
 
(14,392,000) 
 
(72,501,000) 
 
(4,960,000) 
 
(120,532,000) 
 
4,268,000  
 
(16,795,000) 
 
(67,890,000) 
 
(178,000) 
 
(80,595,000) 
 
18,001,000  
 
(19,074,000) 
 
(48,626,000) 
 
(375,000) 
 
(50,074,000)