INVENTORIES, NET (Schedule of Inventories) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
INVENTORIES, NET [Abstract]
Work in Process	$ 2,155	$ 2,234
Parts and supplies	4,178	4,879
Finished goods	7,144	5,583
Inventories	13,477	12,696
Less - inventory reserve	(2,325)	(1,578)	(619)
Inventories, net	$ 11,152	$ 11,118