BORROWINGS (Securities Sold with Agreements to Repurchase) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Outstanding at year end	$ 75,555	$ 70,652	$ 50,045
Approximate average interest rate at year end	0.74%	0.46%	0.29%
Highest amount outstanding as of any month end during the year	$ 106,239	$ 77,886	$ 60,198
Approximate average outstanding during the year	$ 86,874	$ 63,379	$ 57,945
Approximate average interest rate during the year	0.58%	0.39%	0.25%