DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Derivative Assets and Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Derivative Assets
Gross Amount	$ 262	$ 663
Net Amounts Presented in the Statement of Financial Position	262	663
Net Amount	262	663
Derivative Liabilities
Gross Amount	5,593	17,913
Net Amounts Presented in the Statement of Financial Position	5,593	17,913
Net Amount	$ 5,593	$ 17,913