SEGMENT INFORMATION (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 segment	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2012 First Commercial Bank ("FCB")	Sep. 30, 2012 First Commercial Bank ("FCB")	Sep. 30, 2013 First Commercial Bank ("FCB")	Sep. 30, 2013 Traditional Banking	Sep. 30, 2012 Traditional Banking	Sep. 30, 2013 Traditional Banking	Sep. 30, 2012 Traditional Banking	Sep. 30, 2013 Traditional Banking First Commercial Bank ("FCB")	Sep. 30, 2013 Mortgage Banking	Sep. 30, 2012 Mortgage Banking	Sep. 30, 2013 Mortgage Banking	Sep. 30, 2012 Mortgage Banking	Sep. 30, 2013 Republic Processing Group	Sep. 30, 2012 Republic Processing Group	Sep. 30, 2013 Republic Processing Group	Sep. 30, 2012 Republic Processing Group
SEGMENT INFORMATION
Number of operating segments			3
SEGMENT INFORMATION
Net interest income	$ 28,539,000	$ 28,572,000	$ 86,436,000	$ 130,104,000					$ 28,390,000	$ 28,444,000	$ 85,957,000	$ 84,406,000		$ 130,000	$ 110,000	$ 388,000	$ 283,000	$ 19,000	$ 18,000	$ 91,000	$ 45,415,000
Provision for loan losses	2,200,000	2,083,000	2,480,000	13,719,000					2,257,000	2,543,000	3,276,000	6,505,000						(57,000)	(460,000)	(796,000)	7,214,000
Net refund transfer fees	152,000	231,000	13,849,000	78,127,000														152,000	231,000	13,849,000	78,127,000
Mortgage banking income	1,026,000	2,274,000	6,480,000	5,591,000										1,026,000	2,274,000	6,480,000	5,591,000
Net gain on sales, calls and impairment of securities				56,000								56,000
Total bargain purchase gains		26,923,000	1,324,000	54,726,000		712,000	27,100,000	1,000		26,923,000	1,324,000	54,726,000	1,000
Other non interest income	6,361,000	5,417,000	19,194,000	17,240,000					6,243,000	5,387,000	18,300,000	17,005,000		19,000	11,000	102,000	27,000	99,000	19,000	792,000	208,000
Total non-interest income	7,539,000	34,845,000	40,847,000	155,740,000					6,243,000	32,310,000	19,624,000	71,787,000		1,045,000	2,285,000	6,582,000	5,618,000	251,000	250,000	14,641,000	78,335,000
Total non interest expenses	26,325,000	29,762,000	87,326,000	98,366,000					22,237,000	26,118,000	72,862,000	76,752,000		768,000	851,000	2,537,000	2,928,000	3,320,000	2,793,000	11,927,000	18,686,000
INCOME BEFORE INCOME TAX EXPENSE	7,553,000	31,572,000	37,477,000	173,759,000					10,139,000	32,093,000	29,443,000	72,936,000		407,000	1,544,000	4,433,000	2,973,000	(2,993,000)	(2,065,000)	3,601,000	97,850,000
Income tax expense	2,950,000	10,904,000	13,399,000	61,041,000					3,856,000	11,145,000	10,588,000	25,150,000		142,000	541,000	1,551,000	1,041,000	(1,048,000)	(782,000)	1,260,000	34,850,000
NET INCOME	4,603,000	20,668,000	24,078,000	112,718,000					6,283,000	20,948,000	18,855,000	47,786,000		265,000	1,003,000	2,882,000	1,932,000	(1,945,000)	(1,283,000)	2,341,000	63,000,000
Segment end of period assets	$ 3,331,881,000	$ 3,435,776,000	$ 3,331,881,000	$ 3,435,776,000	$ 3,394,399,000				$ 3,305,689,000	$ 3,413,293,000	$ 3,305,689,000	$ 3,413,293,000		$ 15,697,000	$ 8,765,000	$ 15,697,000	$ 8,765,000	$ 10,495,000	$ 13,718,000	$ 10,495,000	$ 13,718,000
Net interest margin (as percent)	3.54%	3.54%	3.55%	5.11%					3.54%	3.54%	3.57%	3.51%