DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Derivative Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivative Assets
Gross Amount	$ 289	$ 663
Net Amounts Presented in the Statement of Financial Position	289	663
Net Amount	289	663
Derivative Liabilities
Gross Amount	24,636	17,913
Net Amounts Presented in the Statement of Financial Position	24,636	17,913
Net Amount	$ 24,636	$ 17,913