DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Changes in the carrying amount of the total product warranty liability
Balance, beginning of period	$ 983	$ 1,071	$ 918
Warranty expense	52	210	1,110
Warranty claims	(195)	(298)	(957)
Other adjustments	(133)
Balance, end of period	$ 707	$ 983	$ 1,071
Minimum
Warranty Liability
Term of warranty	1 year
Maximum
Warranty Liability
Term of warranty	7 years