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Weighted-average Assumptions Used to Determine the Net Periodic Benefit Cost (Details) Sheet http://rubytuesday.com/20170606/role/statement-note-8-employee-postemployment-benefits-weightedaverage-assumptions-used-to-determine-the-net-periodic-benefit-cost-details Note 8 - Employee Post-employment Benefits - Weighted-average Assumptions Used to Determine the Net Periodic Benefit Cost (Details) Uncategorized 67 false false R68.htm 067 - Disclosure - Note 8 - Employee Post-employment Benefits - Weighted-average Assumptions Used to Determine the Benefit Obligation (Details) Sheet http://rubytuesday.com/20170606/role/statement-note-8-employee-postemployment-benefits-weightedaverage-assumptions-used-to-determine-the-benefit-obligation-details Note 8 - Employee Post-employment Benefits - Weighted-average Assumptions Used to Determine the Benefit Obligation (Details) Uncategorized 68 false false R69.htm 068 - Disclosure - Note 8 - Employee Post-employment Benefits - Benefits Expected to be Paid in Each of the Next Five Years and in the Aggregate for the Five Years Thereafter (Details) Sheet http://rubytuesday.com/20170606/role/statement-note-8-employee-postemployment-benefits-benefits-expected-to-be-paid-in-each-of-the-next-five-years-and-in-the-aggregate-for-the-five-years-thereafter-details Note 8 - Employee Post-employment Benefits - Benefits Expected to be Paid in Each of the Next Five Years and in the Aggregate for the Five Years Thereafter (Details) Uncategorized 69 false false R70.htm 069 - Disclosure - Note 8 - Employee Post-employment Benefits - Roll Forward of Employee Separation Obligations (Details) Sheet http://rubytuesday.com/20170606/role/statement-note-8-employee-postemployment-benefits-roll-forward-of-employee-separation-obligations-details Note 8 - Employee Post-employment Benefits - Roll Forward of Employee Separation Obligations (Details) Uncategorized 70 false false R71.htm 070 - Disclosure - Note 9 - Income Taxes (Details Textual) Sheet http://rubytuesday.com/20170606/role/statement-note-9-income-taxes-details-textual Note 9 - Income Taxes (Details Textual) Uncategorized 71 false false R72.htm 071 - Disclosure - Note 9 - Income Taxes - Components of Income Tax Expense (Benefit) (Details) Sheet http://rubytuesday.com/20170606/role/statement-note-9-income-taxes-components-of-income-tax-expense-benefit-details Note 9 - 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