ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Summary of Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Balance at the beginning of the period	$ (6,428)	$ (17,760)	$ (6,786)	$ (7,889)
Other comprehensive income (loss) before reclassifications	(2,862)	(6,759)	(2,702)	(17,006)
Loss reclassified from accumulated other comprehensive loss to net income (loss)	133	367	331	743
Other comprehensive income (loss)	(2,729)	(6,392)	(2,371)	(16,263)
Balance at the end of the period	$ (9,157)	$ (24,152)	$ (9,157)	$ (24,152)