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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 03, 2018	Aug. 31, 2019	Sep. 01, 2018	Dec. 31, 2017	Sep. 02, 2017
Unrecognized tax benefits related to tax positions		$ 1,134
Provision for income taxes, interest and penalties		27	$ 44		$ 245
Accrued interest and penalties on income taxes		$ 521	447
Tax credit carryforward			2,712
Tax credit carryforward, valuation allowance			$ 1,762
U.S. Federal statutory rate		21.00%	25.60%	35.00%	35.00%
Net tax benefit, revaluation of deferred tax liabilities	$ 41,199		$ 40,464
Scenario, Plan [Member]
U.S. Federal statutory rate		21.00%

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Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

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