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Subsequent Events - Additional Information (Detail) (Subsequent Event [Member], USD $)
0 Months Ended
Feb. 14, 2014
Subsequent Event [Member]
 
Subsequent Event [Line Items]  
Merger agreement date Nov. 04, 2013
Banking offices description Home Bank expanded its market area with three banking offices located in Natchez, Mississippi and two banking offices located in Vicksburg, Mississippi
Business acquisition assets acquired $ 1,200,000,000
Business acquisition loan receivable acquired 870,000,000
Business acquisition deposit liability acquired $ 960,000,000