LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Recorded Investment of Loans, Including Nonaccrual and Restructured Loans, by Class (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Past due loans
Total	$ 1,395,393	$ 1,414,280
Past due loans	774	702
31-60 Days Past Due
Past due loans
Past due loans	774	434
61-90 Days Past Due
Past due loans
Past due loans		268
Current
Past due loans
Total	1,389,930	1,409,383
Nonperforming
Past due loans
Total	4,689	4,195
First mortgage
Past due loans
Total		426,276
Past due loans		50
First mortgage | 31-60 Days Past Due
Past due loans
Past due loans		50
First mortgage | Current
Past due loans
Total		425,520
First mortgage | Nonperforming
Past due loans
Total		706
Second mortgage
Past due loans
Total		42,167
Past due loans		8
Second mortgage | 61-90 Days Past Due
Past due loans
Past due loans		8
Second mortgage | Current
Past due loans
Total		42,159
Owner occupied
Past due loans
Total		221,008
Past due loans		323
Owner occupied | 31-60 Days Past Due
Past due loans
Past due loans		323
Owner occupied | Current
Past due loans
Total		219,080
Owner occupied | Nonperforming
Past due loans
Total		1,605
Non-owner occupied
Past due loans
Total		336,996
Non-owner occupied | Current
Past due loans
Total		336,514
Non-owner occupied | Nonperforming
Past due loans
Total		482
Residential
Past due loans
Total		2,422
Residential | Current
Past due loans
Total		2,422
Commercial
Past due loans
Total		32,380
Commercial | Current
Past due loans
Total		32,380
Installment
Past due loans
Total	7,629	10,115
Past due loans		70
Installment | 31-60 Days Past Due
Past due loans
Past due loans		61
Installment | 61-90 Days Past Due
Past due loans
Past due loans		9
Installment | Current
Past due loans
Total		10,023
Installment | Nonperforming
Past due loans
Total		22
All other loans
Past due loans
Total	31	44
All other loans | Current
Past due loans
Total		44
Commercial, financial and agricultural
Past due loans
Total	260,167	237,451
Past due loans		251
Commercial, financial and agricultural | 61-90 Days Past Due
Past due loans
Past due loans		251
Commercial, financial and agricultural | Current
Past due loans
Total	258,942	235,820
Commercial, financial and agricultural | Nonperforming
Past due loans
Total	1,225	1,380
Municipal
Past due loans
Total	60,590	105,421
Municipal | Current
Past due loans
Total	60,590	105,421
Real estate loans - residential
Past due loans
Total	456,132	468,443
Real estate loans - residential | First mortgage
Past due loans
Total	415,456	426,276
Past due loans	702
Real estate loans - residential | First mortgage | 31-60 Days Past Due
Past due loans
Past due loans	702
Real estate loans - residential | First mortgage | Current
Past due loans
Total	414,053
Real estate loans - residential | First mortgage | Nonperforming
Past due loans
Total	701
Real estate loans - residential | Second mortgage
Past due loans
Total	40,676	42,167
Real estate loans - residential | Second mortgage | Current
Past due loans
Total	40,676
Real estate loans - commercial
Past due loans
Total	560,056	558,004
Real estate loans - commercial | Owner occupied
Past due loans
Total	216,235	221,008
Real estate loans - commercial | Owner occupied | Current
Past due loans
Total	214,080
Real estate loans - commercial | Owner occupied | Nonperforming
Past due loans
Total	2,155
Real estate loans - commercial | Non-owner occupied
Past due loans
Total	343,821	336,996
Real estate loans - commercial | Non-owner occupied | Current
Past due loans
Total	343,240
Real estate loans - commercial | Non-owner occupied | Nonperforming
Past due loans
Total	581
Real estate loans - construction
Past due loans
Total	50,788	34,802
Real estate loans - construction | Residential
Past due loans
Total	2,446	2,422
Real estate loans - construction | Residential | Current
Past due loans
Total	2,446
Real estate loans - construction | Commercial
Past due loans
Total	48,342	32,380
Real estate loans - construction | Commercial | Current
Past due loans
Total	48,342
Real estate loans - construction | Installment
Past due loans
Total	7,629
Past due loans	72
Real estate loans - construction | Installment | 31-60 Days Past Due
Past due loans
Past due loans	72
Real estate loans - construction | Installment | Current
Past due loans
Total	7,530
Real estate loans - construction | Installment | Nonperforming
Past due loans
Total	27
Real estate loans - construction | All other loans
Past due loans
Total	31
Real estate loans - construction | All other loans | Current
Past due loans
Total	31
Accruing loans
Past due loans
Past due loans	0
Accruing loans | 91 Days or More Past Due
Past due loans
Past due loans		0
Non-accrual loans
Past due loans
Past due loans	2,310	2,650
Restructured loans
Past due loans
Past due loans	$ 386	$ 471