DERIVATIVE INSTRUMENTS (Details Textual) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Reassessed Estimated Fair Value of Award	$ 32.3	$ 27.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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