ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Summary of Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Balance at the beginning of the period	$ (7,889)	$ (7,712)
Other comprehensive income (loss) before reclassifications	(261)	(1,922)
Loss reclassified from accumulated other comprehensive loss to net income (loss)	1,364	1,745
Other comprehensive income (loss)	1,103	(177)	$ 510
Balance at the end of the period	$ (6,786)	$ (7,889)	$ (7,712)