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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents (Details) - USD ($) $ in Thousands	Feb. 23, 2020	May 26, 2019	Feb. 24, 2019	May 27, 2018
Accounting Policies [Abstract]
Cash and cash equivalents	$ 2,607	$ 1,080	$ 1,722	$ 2,899
Restricted cash	193	385	385	325
Cash, discontinued operations	0	0	0	(8)
Cash, cash equivalents and restricted cash	$ 2,800	$ 1,465	$ 2,107	$ 3,216

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount classified as cash and cash equivalents attributable to disposal group held for sale or disposed of.

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Amount of cash restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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