FAIR VALUE - Unobservable Inputs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Corporate Bonds and Notes
Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance of recurring Level 3 assets at January 1	$ 252	$ 0	$ 248	$ 0
Derivative instruments entered into	0	0	0	0
Included in earnings - other non-interest income	0	0	0	0
Included in other comprehensive income	4	0	8	0
Transfers into Level 3	0	0	0	0
Balance of recurring Level 3 assets at June 30	256	0	256	0
Derivative Liabilities
Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]
Balance of recurring Level 3 assets at January 1	(84)	(33)	(48)	(18)
Derivative instruments entered into	(23)	0	(25)	0
Included in earnings - other non-interest income	(13)	20	(47)	5
Included in other comprehensive income	0	0	0	0
Transfers into Level 3	0	0	0	0
Balance of recurring Level 3 assets at June 30	$ (120)	$ (13)	$ (120)	$ (13)