LOANS (Details 4) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	$ 16,200		$ 36,800
Total Loans	5,321,514	$ 5,264,326
Purchased Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	28,041	25,060
Current Loans	978,894	1,044,131
Total Loans	1,006,935	1,069,191
Loans 90 Days or More Past Due and Still Accruing	0	0
Purchased Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	11,482	6,896
Purchased Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	1,697	1,053
Purchased Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	14,862	17,111
Commercial Financial And Agricultural [Member] | Purchased Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	447	724
Current Loans	89,450	95,813
Total Loans	89,897	96,537
Loans 90 Days or More Past Due and Still Accruing	0	0
Commercial Financial And Agricultural [Member] | Purchased Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	92	113
Commercial Financial And Agricultural [Member] | Purchased Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	6	18
Commercial Financial And Agricultural [Member] | Purchased Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	349	593
Real Estate Construction And Development [Member] | Purchased Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	2,483	2,690
Current Loans	79,895	78,678
Total Loans	82,378	81,368
Loans 90 Days or More Past Due and Still Accruing	0	0
Real Estate Construction And Development [Member] | Purchased Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	517	161
Real Estate Construction And Development [Member] | Purchased Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	154	11
Real Estate Construction And Development [Member] | Purchased Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	1,812	2,518
Real Estate Commercial And Farmland [Member] | Purchased Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	11,367	9,512
Current Loans	526,679	566,843
Total Loans	538,046	576,355
Loans 90 Days or More Past Due and Still Accruing	0	0
Real Estate Commercial And Farmland [Member] | Purchased Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	4,220	2,034
Real Estate Commercial And Farmland [Member] | Purchased Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	209	326
Real Estate Commercial And Farmland [Member] | Purchased Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	6,938	7,152
Residential Real Estate [Member] | Purchased Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	13,695	12,099
Current Loans	279,216	298,178
Total Loans	292,911	310,277
Loans 90 Days or More Past Due and Still Accruing	0	0
Residential Real Estate [Member] | Purchased Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	6,629	4,566
Residential Real Estate [Member] | Purchased Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	1,315	698
Residential Real Estate [Member] | Purchased Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	5,751	6,835
Consumer Installment [Member] | Purchased Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	49	35
Current Loans	3,654	4,619
Total Loans	3,703	4,654
Loans 90 Days or More Past Due and Still Accruing	0	0
Consumer Installment [Member] | Purchased Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	24	22
Consumer Installment [Member] | Purchased Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	13	0
Consumer Installment [Member] | Purchased Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans Past Due	$ 12	$ 13