LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Unpaid Principal Balance [Abstract]
Unpaid Principal Balance, Total	$ 13,658		$ 13,658		$ 15,014
Recorded Investment [Abstract]
Recorded Investment, Total	13,630		13,630		14,980
Allowance for Loan Losses Allocated	1,650		1,650		1,566
Average Recorded Investment [Abstract]
Average Recorded Investment, Total	13,932	$ 15,888	14,282	$ 13
Interest Income, Accrual Method [Abstract]
Interest Income, Accrual Method, Total	77	115	161	251
Commercial Mortgages [Member] | Construction [Member]
Unpaid Principal Balance [Abstract]
With no related allowance, Unpaid Principal Balance	333		333		349
Recorded Investment [Abstract]
With no related allowance, Recorded Investment	334		334		350
Average Recorded Investment [Abstract]
With no related allowance, Average Recorded Investment	340	1,172	343	1,418
Interest Income, Accrual Method [Abstract]
With no related allowance, Interest Income, Accrual Method	3	4	7	29
Commercial Mortgages [Member] | Commercial Mortgages other [Member]
Unpaid Principal Balance [Abstract]
With no related allowance, Unpaid Principal Balance	6,220		6,220		7,551
With related allowance, Unpaid Principal Balance	5,108		5,108		4,913
Recorded Investment [Abstract]
With no related allowance, Recorded Investment	6,251		6,251		7,577
With related allowance, Recorded Investment	5,041		5,041		4,846
Allowance for Loan Losses Allocated	1,528		1,528		1,481
Average Recorded Investment [Abstract]
With no related allowance, Average Recorded Investment	6,733	7,636	7,014	7,660
With related allowance, Average Recorded Investment	4,942	4,611	4,910	4,438
Interest Income, Accrual Method [Abstract]
With no related allowance, Interest Income, Accrual Method	59	63	121	126
With related allowance, Interest Income, Accrual Method	1	24	3	47
Residential Mortgages [Member]
Unpaid Principal Balance [Abstract]
With no related allowance, Unpaid Principal Balance	485		485		234
Recorded Investment [Abstract]
With no related allowance, Recorded Investment	486		486		235
Average Recorded Investment [Abstract]
With no related allowance, Average Recorded Investment	399	246	344	249
Interest Income, Accrual Method [Abstract]
With no related allowance, Interest Income, Accrual Method	1	1	1	2
Consumer Loans [Member] | Home Equity Lines and Loans [Member]
Unpaid Principal Balance [Abstract]
With no related allowance, Unpaid Principal Balance	101		101		107
With related allowance, Unpaid Principal Balance	361		361		364
Recorded Investment [Abstract]
With no related allowance, Recorded Investment	103		103		108
With related allowance, Recorded Investment	361		361		366
Allowance for Loan Losses Allocated	122		122		77
Average Recorded Investment [Abstract]
With no related allowance, Average Recorded Investment	104	482	105	465
With related allowance, Average Recorded Investment	362	0	363	18
Interest Income, Accrual Method [Abstract]
With no related allowance, Interest Income, Accrual Method	1	6	3	12
With related allowance, Interest Income, Accrual Method	0	0	0	0
Commercial and Industrial Sector [Member] | Commercial and Agricultural [Member]
Unpaid Principal Balance [Abstract]
With no related allowance, Unpaid Principal Balance	1,050		1,050		1,487
With related allowance, Unpaid Principal Balance	0		0		9
Recorded Investment [Abstract]
With no related allowance, Recorded Investment	1,054		1,054		1,489
With related allowance, Recorded Investment	0		0		9
Allowance for Loan Losses Allocated	0		0		$ 8
Average Recorded Investment [Abstract]
With no related allowance, Average Recorded Investment	1,048	1,467	1,195	1,433
With related allowance, Average Recorded Investment	4	274	6	212
Interest Income, Accrual Method [Abstract]
With no related allowance, Interest Income, Accrual Method	12	17	25	32
With related allowance, Interest Income, Accrual Method	$ 0	$ 0	$ 0	$ 3