SHORT-TERM BORROWINGS - Contractual Maturity of Repurchase Agreements (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
SHORT-TERM BORROWINGS
Short-term borrowings	$ 46,638	$ 40,818
Repurchase Agreements
SHORT-TERM BORROWINGS
Short-term borrowings	18,334	13,987	$ 12,391
Overnight and Continuous
SHORT-TERM BORROWINGS
Securities borrowed, gross including not subject to master netting arrangement	24,084	20,235
Overnight and Continuous | US Treasury and Government
SHORT-TERM BORROWINGS
Securities borrowed, gross including not subject to master netting arrangement	3,586	3,953
Overnight and Continuous | Collateralized Mortgage Backed Securities [Member]
SHORT-TERM BORROWINGS
Securities borrowed, gross including not subject to master netting arrangement	8,368	4,526
Overnight and Continuous | Asset-backed securities
SHORT-TERM BORROWINGS
Securities borrowed, gross including not subject to master netting arrangement	1,960	2,468
Overnight and Continuous | State and political securities
SHORT-TERM BORROWINGS
Securities borrowed, gross including not subject to master netting arrangement	8,015	7,070
Overnight and Continuous | Other debt securities
SHORT-TERM BORROWINGS
Securities borrowed, gross including not subject to master netting arrangement	$ 2,155	$ 2,218