LOANS AND ALLOWANCE FOR LOAN LOSSES (Aging of Loans by Loan Classification) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	$ 4,128	$ 5,442
60-89 Days	1,264	1,837
Recorded Investment Greater Than 90 Days Accruing	157	163
Nonaccrual	25,810	57,476
Total Past Due	31,359	64,918
Current	3,313,548	3,084,325
Total loans	3,344,907	3,149,243
Commercial, financial and agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	265	132
60-89 Days	308	430
Recorded Investment Greater Than 90 Days Accruing	0	54
Nonaccrual	5,702	9,486
Total Past Due	6,275	10,102
Current	747,002	685,165
Total loans	753,277	695,267
Real estate construction and development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	683	431
60-89 Days	0	0
Recorded Investment Greater Than 90 Days Accruing	0	0
Nonaccrual	3,152	3,393
Total Past Due	3,835	3,824
Current	131,235	86,027
Total loans	135,070	89,851
Residential mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	1,614	2,690
60-89 Days	447	986
Recorded Investment Greater Than 90 Days Accruing	27	35
Nonaccrual	8,103	13,890
Total Past Due	10,191	17,601
Current	676,971	603,567
Total loans	687,162	621,168
Home equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	1,467	1,857
60-89 Days	441	334
Recorded Investment Greater Than 90 Days Accruing	130	72
Nonaccrual	5,698	6,831
Total Past Due	7,736	9,094
Current	392,880	386,448
Total loans	400,616	395,542
Multi-family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	0	0
60-89 Days	0	0
Recorded Investment Greater Than 90 Days Accruing	0	0
Nonaccrual	319	19,731
Total Past Due	319	19,731
Current	97,721	95,703
Total loans	98,040	115,434
Commercial real estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	12	196
60-89 Days	52	54
Recorded Investment Greater Than 90 Days Accruing	0	0
Nonaccrual	2,828	4,122
Total Past Due	2,892	4,372
Current	1,213,316	1,178,670
Total loans	1,216,208	1,183,042
Consumer and installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	87	136
60-89 Days	16	33
Recorded Investment Greater Than 90 Days Accruing	0	2
Nonaccrual	8	23
Total Past Due	111	194
Current	17,995	17,334
Total loans	18,106	17,528
Loans held for sale [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
30-59 Days	0	0
60-89 Days	0	0
Recorded Investment Greater Than 90 Days Accruing	0	0
Nonaccrual	0	0
Total Past Due	0	0
Current	36,428	31,411
Total loans	$ 36,428	$ 31,411