Warranty

We provide certain service and warranty on our products. From time to time, we also voluntarily incur costs for certain warranty-type expenses occurring after the normal warranty period to help protect the reputation of our products and the goodwill of our customers. Warranty expense is affected by dealership labor rates, the cost of parts and the frequency of claims. Estimated costs related to product warranty are accrued at the time of sale and are based upon historical warranty and service claims experience. Adjustments are made to accruals as claim data and cost experience becomes available.

Changes in our product warranty liability are as follows:



	Three Months Ended						Nine Months Ended
(In thousands)	May 26, 2018			May 27, 2017			May 26, 2018			May 27, 2017
Balance at beginning of period	$	34,988		$	25,030		$	30,805		$	12,412
Provision	11,645			10,202			31,881			21,832
Claims paid	(9,189		)	(7,176		)	(25,242		)	(19,092		)
Acquisition of Grand Design	—			—			—			12,904
Balance at end of period	$	37,444		$	28,056		$	37,444		$	28,056