DERIVATIVE INSTRUMENTS (Offsetting Assets and Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative assets - gross amounts	$ 2,577	$ 11,967
Derivative assets - gross amounts offset	(1,714)	(3,730)
Derivative assets- net amounts	863	8,237
Derivative liabilities - gross amounts	14,662	18,252
Derivative liabilities - gross amounts offset	(1,714)	(3,730)
Derivative liabilities- net amounts	$ 12,948	$ 14,522