COMMITMENTS AND CONTINGENCIES (Schedule of Activity Related to Product Warranty Liability) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Warranty Accrual [Roll Forward]
Balance at beginning of period	$ 3,945	$ 3,686	$ 4,832
Accrual for warranties during the period, net	3,639	3,884	2,203
Actual costs incurred	(3,760)	(3,625)	(3,349)
Balance at end of period	$ 3,824	$ 3,945	$ 3,686