WARRANTIES (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Changes in Entity's Product Warranty Liability [Abstract]
Balance at beginning of the period	$ 1,500	$ 1,493
Additions charged to cost of product sales	611	879
Repairs and replacements	(1,309)	(872)
Balance at the end of the period	$ 802	$ 1,500