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DERIVATIVE INSTRUMENTS (Details 2) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
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Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |
Derivative assets - gross amounts | $ 9,514 | $ 22,270
Derivative assets - gross amounts offset | (2,602) | (5,373)
Derivative assets- net amounts | 6,912 | 16,897
Derivative liabilities - gross amounts | 15,878 | 20,949
Derivative liabilities - gross amounts offset | (2,602) | (5,373)
Derivative liabilities- net amounts | $ 13,276 | $ 15,576

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