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Note E - Accounts Receivable (Details) - Accounts Receivable, Current (USD $)
In Thousands, unless otherwise specified
Mar. 03, 2015
Jun. 03, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, net $ 4,850us-gaap_AccountsReceivableNetCurrent $ 4,861us-gaap_AccountsReceivableNetCurrent
Amounts due from franchisees 1,640us-gaap_DueFromAffiliateCurrent 1,281us-gaap_DueFromAffiliateCurrent
Third-party gift card sales 1,020rt_ThirdPartyGiftCardSalesReceivables 1,636rt_ThirdPartyGiftCardSalesReceivables
Other receivables 1,352us-gaap_OtherReceivablesNetCurrent 1,014us-gaap_OtherReceivablesNetCurrent
Rebates [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, net $ 838us-gaap_AccountsReceivableNetCurrent
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= rt_RebatesMember
$ 930us-gaap_AccountsReceivableNetCurrent
/ us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis
= rt_RebatesMember