Name:	rt_ClosuresAndImpairmentsExpenses
Namespace Prefix:	rt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

This element represents the number of restaurants closed during the period.

No definition available.

Name:	rt_NumberOfRestaurantsClosed
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The number of restaurants sold by the entity.

No definition available.

Name:	rt_NumberOfRestuarantsSold
Namespace Prefix:	rt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Sum of the carrying values as of the balance sheet date of the lease obligations for closed restaurants.

No definition available.

Name:	rt_OperatingLeaseObligation
Namespace Prefix:	rt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill.

No definition available.

Name:	us-gaap_GoodwillAndIntangibleAssetImpairment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Carrying amount (original costs adjusted for previously recognized amortization and impairment) as of the balance sheet date for the rights acquired through registration of a trademark to gain or protect exclusive use of a business name, symbol or other device or style for a projected indefinite period of benefit.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

Name:	us-gaap_IndefiniteLivedTrademarks
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133