Note 11. Warranty

The Company accrues an estimate of its exposure to warranty claims based upon both current and historical product sales data and warranty costs incurred. The Company’s products carry a ten-year warranty. The Company periodically assesses the adequacy of its recorded warranty liabilities and adjusts the amounts as necessary. The warranty liability is included in accrued liabilities in the accompanying consolidated balance sheets.

The following is a summary of the Company’s warranty claim activity for the three and six months ended July 31, 2011 and 2010 (in thousands):


	Three Months Ended						Six Months Ended
	7/31/2011			7/31/2010			7/31/2011			7/31/2010

				(In thousands)
Beginning accrued warranty balance	$	2,150		$	1,675		$	2,300		$	1,675
Provision		276			261			348			453
Costs incurred		(626	)		(261	)		(848	)		(453	)

Ending accrued warranty balance	$	1,800		$	1,675		$	1,800		$	1,675