LOANS - Schedule of Non-Accrual Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	$ 62,580	$ 50,051
Commercial, financial and agricultural
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	31,461	27,705
Real estate – construction
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	9	37
Real estate – commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	28,688	19,907
Real estate – residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	1,881	1,998
Installment loans to individuals
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	541	404
Lease financing receivable
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	0	0
Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans on Nonaccrual Status	$ 0	$ 0