ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Summary of Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Balance at the beginning of the period	$ (6,786)	$ (7,889)
Other comprehensive income (loss) before reclassifications	160	(10,222)
Loss reclassified from accumulated other comprehensive loss to net income (loss)	198	351
Other comprehensive income (loss)	358	(9,871)
Balance at the end of the period	$ (6,428)	$ (17,760)