WARRANTIES (Tables)

12 Months Ended

Dec. 31, 2012

WARRANTIES [Abstract]

Changes in entity's product warranty liability

The Company provides for anticipated warranty costs at the time the associated revenue is recognized. Product warranty costs are estimated based upon the Company's historical experience and the warranty period. The Company periodically reviews the adequacy of its warranty reserve and adjusts, if necessary, the warranty percentage and accrual based on actual experience and estimated costs to be incurred. Information regarding the changes in the Company's product warranty liability for the years ended December 31, 2012 and 2011 is as follows (in thousands):

	Amount
Balance at December 31, 2010	$	1,493
Additions charged to cost of product sales		879
Repairs and replacements		(872	)
Balance at December 31, 2011	$	1,500
Additions charged to cost of product sales		611
Repairs and replacements		(1,309	)
Balance at December 31, 2012	$	802