Appraised value of assets pledged to secure a debt instrument.

No definition available.

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- Definition

Represents the minimum appraised value of eligible restaurants, which is a debt instrument covenant requirement.

+ References

No definition available.

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- Definition

Maximum amount of the original debt instrument that can be repurchased.

+ References

No definition available.

+ Details

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- Definition

Maximum leverage ratio to be maintained under the terms of the credit facility.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Represents the number of restaurants serving as collateral for debt, in terms of real property, improvements, and fixtures.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

Mortgage loan obligations acquired as of balance sheet date.

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No definition available.

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

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
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Period Type:	instant

- Definition

Cumulative amount paid into a fund, which is used to retire the debt instrument.

+ References

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Balance Type:	credit
Period Type:	instant

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

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Balance Type:	na
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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Balance Type:	na
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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, after accumulated amortization, of debt discount.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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Balance Type:
Period Type:

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Name:	us-gaap_CreditFacilityAxis=rt_PriorCreditFacilityMember
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Note 6 - Long-term Debt and Capital Leases (Details Textual) $ in Thousands			3 Months Ended
	May 26, 2017 USD ($)	May 14, 2012 USD ($)	Sep. 05, 2017 USD ($)	Jun. 06, 2017 USD ($)	May 25, 2017 USD ($)	Feb. 28, 2017 USD ($)
Debt Instrument, Collateral Amount, Appraised Value						$ 31,000
Secured Debt			$ 4,280	$ 4,650
Senior Credit Facility [Member]
Debt Instrument, Term	364 days
Line of Credit Facility, Maximum Borrowing Capacity	$ 20,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.50%
Number of Restaurants Collateralizing Debt	22
Debt Instrument, Collateral Amount			34,700
Short-term Debt			0
Line of Credit Facility, Remaining Borrowing Capacity			8,000
Debt Instrument, Covenant Requirements, Minimum Appraised Value of Eligible Restaurants			$ 30,000
Line of Credit Facility, Maximum Leverage Ratio			5
Debt Instrument, Maturity Date			May 25, 2018
Senior Credit Facility [Member] \| Federal Funds Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Senior Credit Facility [Member] \| Adjusted London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Senior Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	4.00%
Senior Credit Facility [Member] \| Base Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	3.00%
Senior Credit Facility [Member] \| Sub-limit for Standby Letters of Credit [Member]
Line of Credit Facility, Current Borrowing Capacity	$ 15,000
Prior Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity					$ 30,000
Rent and Other Line Item [Member]
Interest Payable, Current			$ 5,200	1,200
Senior Notes [Member]
Debt Instrument, Face Amount		$ 250,000
Debt Instrument, Interest Rate, Stated Percentage		7.625%
Debt Instrument, Unamortized Discount		$ 3,700	1,262	$ 1,366
Debt Instrument, Term		8 years
Debt Instrument Repurchased Amount Authorized			20,000
Debt Instrument, Repurchase Amount			$ 0
Debt Instrument, Maturity Date			May 15, 2020
Debt Instrument, Cumulative Sinking Fund Payments			$ 0
Mortgages [Member]
Secured Debt			4,300
Mortgages [Member] \| Minimum [Member]
Range of Loan Balances			$ 400
Debt Instrument, Interest Rate, Effective Percentage			7.78%
Mortgages [Member] \| Maximum [Member]
Range of Loan Balances			$ 700
Debt Instrument, Interest Rate, Effective Percentage			10.17%