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						Six Months Ended
(In thousands)	February 24, 2018			February 25, 2017			February 24, 2018			February 25, 2017
Balance at beginning of period	$	32,500		$	24,551		$	30,805		$	12,412
Provision	10,283			7,734			20,236			11,632
Claims paid	(7,795		)	(7,255		)	(16,053		)	(11,918		)
Acquisition of Grand Design	—			—			—			12,904
Balance at end of period	$	34,988		$	25,030		$	34,988		$	25,030