OTHER REAL ESTATE OWNED (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	$ 14,759	$ 33,984	$ 33,984
New foreclosed properties	1,359	2,804	7,422
Sales	(2,837)	(6,726)	(20,649)
Writedowns	(596)	(2,173)	(5,998)
Balance at end of period	12,685	27,889	14,759
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	14,759	33,984	33,984
Total foreclosed property expenses	1,181	1,971
Realized net losses on dispositions and holding losses on valuations of foreclosed properties	(843)	(1,394)
Commercial And Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	84
Balance at end of period	74	84	84
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	84	84	84
Consumer Mortgages [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	2,477
Balance at end of period	1,697	1,699	2,477
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	2,477	1,699	2,477
Home Equity [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	101
Balance at end of period	594	101	101
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	101	101	101
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	25
Balance at end of period	25	25	25
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	25	25	25
Commercial And Industrial - Owner Occupied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	1,074
Balance at end of period	1,051	1,990	1,074
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	1,074	1,990	1,074
Construction, Acquisition And Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	10,212
Balance at end of period	8,546	22,805	10,212
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	10,212	22,805	10,212
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	678
Balance at end of period	466	1,000	678
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	678	1,000	678
All Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of period	108
Balance at end of period	232	185	108
Other Real Estate, Foreclosed Assets, and Repossessed Assets [Abstract]
Total	$ 108	$ 185	$ 108