OTHER BORROWINGS - Securities Sold Under Agreements to Repurchase (Details) - Securities sold under repurchase agreements - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Securities sold under agreement to repurchase and Federal funds purchased
Average daily balance during the year	$ 27,816	$ 26,723	$ 25,006
Average interest rate during the year (as a percent)	0.14%	0.15%	0.18%
Maximum month-end balance during the year	$ 40,778	$ 34,439	$ 32,203
Weighted average interest rate at year-end (as a percent)	0.18%	0.15%	0.14%