Product Warranty

3 Months Ended

Mar. 31, 2012

Product Warranty

Product Warranty

10.   Product Warranty

As the Company recognizes revenue under the percentage-of-completion method, it provides an accrual for estimated future warranty costs based on historical experience and projected claims.  The activity in the warranty account is as follows:

(in thousands)
Balance at December 31, 2011	$    2,300
Warranty provision	317
Warranty claims	(141)
Currency adjustment	20
Balance at March 31, 2012	$    2,496