ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Summary of Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Balance at the beginning of the period	$ (9,157)	$ (24,152)	$ (6,786)	$ (7,889)
Other comprehensive income (loss) before reclassifications	72	(22)	(2,630)	(17,028)
Loss reclassified from accumulated other comprehensive loss to net income (loss)	68	356	399	1,099
Other comprehensive income (loss)	140	334	(2,231)	(15,929)
Balance at the end of the period	$ (9,017)	$ (23,818)	$ (9,017)	$ (23,818)