BORROWINGS (Securities Sold with Agreements to Repurchase) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Outstanding at year end	$ 50,045	$ 69,622	$ 54,907
Approximate average interest rate at year end	0.29%	0.21%	0.18%
Highest amount outstanding as of any month end during the year	$ 60,198	$ 82,817	$ 96,236
Approximate average outstanding during the year	$ 57,945	$ 63,880	$ 78,120
Approximate average interest rate during the year	0.25%	0.19%	0.24%