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Accumulated Other Comprehensive Income (Loss) Changes in AOCI by component (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 25, 2019	May 26, 2018	May 25, 2019	May 26, 2018
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	$ 252	$ 907	$ 892	$ (1,023)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Other comprehensive income before reclassifications	(362)	129	(1,018)	2,046
Amounts reclassified from AOCI	8	7	24	20
Net current-period OCI	(354)	136	(994)	2,066
Balance at end of period	(102)	1,043	(102)	1,043
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	(575)	(496)	(591)	(509)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Amounts reclassified from AOCI	8	7	24	20
Net current-period OCI	8	7	24	20
Balance at end of period	(567)	(489)	(567)	(489)
Accumulated Net Gain (Loss) from Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance at beginning of period	827	1,403	1,483	(514)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]
Other comprehensive income before reclassifications	(362)	129	(1,018)	2,046
Net current-period OCI	(362)	129	(1,018)	2,046
Balance at end of period	$ 465	$ 1,532	$ 465	$ 1,532

X

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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