SECURITIES - Securities Held to Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Amortized cost and estimated fair value of securities held to maturity [Abstract]
Amortized Cost	$ 3,721	$ 4,705
Unrealized Gains	194	207
Unrealized Losses	3	0
Securities held to maturity	3,912	4,912
Amortized Cost [Abstract]
Within one year	866
After one, but within five years	2,583
After five, but within ten years	272
After ten years	0
Total	3,721
Fair Value [Abstract]
Within one year	873
After one, but within five years	2,729
After five, but within ten years	310
After ten years	0
Total	3,912
Obligations of states and political subdivisions
Amortized cost and estimated fair value of securities held to maturity [Abstract]
Amortized Cost	2,741	3,725
Unrealized Gains	194	206
Unrealized Losses	0	0
Securities held to maturity	2,935	3,931
Time deposits with other financial institutions
Amortized cost and estimated fair value of securities held to maturity [Abstract]
Amortized Cost	980	980
Unrealized Gains	0	1
Unrealized Losses	3	0
Securities held to maturity	$ 977	$ 981