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Leases (Supplemental Balance Sheet Information) (Details) - USD ($) $ in Thousands	Nov. 27, 2021	Aug. 28, 2021
Leases [Abstract]
Operating lease assets	$ 52,824	$ 49,011
Finance lease assets	2,053	2,377
Total lease assets	54,877	51,388
Current, Operating lease liabilities	13,703	13,927
Current, Finance lease liabilities	1,239	1,273
Noncurrent, Operating lease liabilities	40,447	36,429
Noncurrent, Finance lease liabilities	892	1,188
Total lease liabilities	$ 56,281	$ 52,817
Weighted-average remaining lease term (years), Operating leases	5 years 6 months	4 years 3 months 18 days
Weighted-average remaining lease term (years), Finance leases	1 year 9 months 18 days	2 years 8 months 12 days
Weighted-average discount rate, Operating leases	3.50%	3.50%
Weighted-average discount rate, Finance leases	2.70%	2.70%
Finance lease assets, accumulated amortization	$ 3,053	$ 2,729

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