LOANS AND ALLOWANCE FOR LOAN LOSSES (Details 6) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	$ 69,400	$ 96,500
Total Loans	3,626,821	2,406,877
Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	4,806	13,821
Current Loans	53,354	123,708
Total Loans	58,160	137,529
Loans 90 Days or More Past Due and Still Accruing	0	0
Covered Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	2,484	2,421
Covered Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	60	1,206
Covered Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	2,262	10,194
Commercial, financial & agricultural [Member] | Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	127	2,802
Current Loans	667	2,744
Total Loans	794	5,546
Loans 90 Days or More Past Due and Still Accruing	0	0
Commercial, financial & agricultural [Member] | Covered Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	0	0
Commercial, financial & agricultural [Member] | Covered Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	0	0
Commercial, financial & agricultural [Member] | Covered Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	127	2,802
Real Estate - construction & development [Member] | Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	114	1,729
Current Loans	2,878	5,883
Total Loans	2,992	7,612
Loans 90 Days or More Past Due and Still Accruing	0	0
Real Estate - construction & development [Member] | Covered Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	94	96
Real Estate - construction & development [Member] | Covered Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	1	0
Real Estate - construction & development [Member] | Covered Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	19	1,633
Commercial And Farmland [Member] | Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	869	3,439
Current Loans	12,048	67,787
Total Loans	12,917	71,226
Loans 90 Days or More Past Due and Still Accruing	0	0
Commercial And Farmland [Member] | Covered Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	603	170
Commercial And Farmland [Member] | Covered Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	31	205
Commercial And Farmland [Member] | Covered Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	235	3,064
Residential Real Estate [Member] | Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	3,696	5,814
Current Loans	37,693	47,224
Total Loans	41,389	53,038
Loans 90 Days or More Past Due and Still Accruing	0	0
Residential Real Estate [Member] | Covered Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	1,787	2,155
Residential Real Estate [Member] | Covered Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	28	1,001
Residential Real Estate [Member] | Covered Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	1,881	2,658
Consumer installment [Member] | Covered Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	0	37
Current Loans	68	70
Total Loans	68	107
Loans 90 Days or More Past Due and Still Accruing	0	0
Consumer installment [Member] | Covered Loans [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	0	0
Consumer installment [Member] | Covered Loans [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	0	0
Consumer installment [Member] | Covered Loans [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Loans Past Due	$ 0	$ 37