REPURCHASE AGREEMENTS AND OTHER BORROWINGS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Repurchase agreements and other borrowings
Repurchase agreements	$ 19,900	$ 20,873
Repurchase agreements
Repurchase agreements and other borrowings
Repurchase agreements	26,500	29,400
Average daily balance during the year	$ 21,989	$ 23,755	$ 16,596
Average interest rate during the year (as a percent)	0.47%	0.45%	0.59%
Maximum month-end balance during the year	$ 24,070	$ 27,214	$ 19,874
Weighted average interest rate at year end (as a percent)	0.52%	0.50%	0.54%
Repurchase agreements | Minimum
Repurchase agreements and other borrowings
Maturity term	1 day
Repurchase agreements | Maximum
Repurchase agreements and other borrowings
Maturity term	41 months