Long-Term Debt (Details) $ in Millions	3 Months Ended	9 Months Ended
Oct. 03, 2017 USD ($)	Oct. 03, 2017 USD ($)
Long-Term Debt
Maximum commitments	$ 200.0	$ 200.0
Maximum commitments, letter of credit sub-facility	50.0	50.0
Additional available credit	100.0	100.0
Borrowed on credit facility	30.0
Available borrowings	149.3	149.3
Outstanding debt	30.0	30.0
Outstanding letters of credit	$ 20.7	$ 20.7
Net Adjusted Leverage Ratio	2.7	2.7
EBITDAR Ratio	2.9	2.9
Minimum
Long-Term Debt
Financial covenant, EBITDAR Ratio		1.9
Maximum
Long-Term Debt
Financial covenant, EBITDAR Ratio		4.0
Adjusted LIBO Rate
Long-Term Debt
Credit facility, floating interest rate basis		Adjusted LIBO Rate
Adjusted LIBO Rate \| Minimum
Long-Term Debt
Credit facility, basis spread on variable rate, (as a percent)		1.00%
Adjusted LIBO Rate \| Maximum
Long-Term Debt
Credit facility, basis spread on variable rate, (as a percent)		1.75%
Federal Funds Effective Rate
Long-Term Debt
Credit facility, floating interest rate basis		Federal Funds Effective Rate
Credit facility, basis spread on variable rate, (as a percent)		0.50%
One-month Adjusted LIBO Rate
Long-Term Debt
Credit facility, floating interest rate basis		one-month Adjusted LIBO Rate
Fixed percentage added to variable rate		1.00%
One-month Adjusted LIBO Rate \| Minimum
Long-Term Debt
Credit facility, basis spread on variable rate, (as a percent)		0.00%
One-month Adjusted LIBO Rate \| Maximum
Long-Term Debt
Credit facility, basis spread on variable rate, (as a percent)		0.75%

Represents the ratio of adjusted debt to EBITDAR, as of the balance sheet date.

No definition available.

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- Definition

Represents the ratio of EBITDAR to interest and rental expense, as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Represents the ratio of trailing 12-month EBITDAR to interest and rental expense ("EBITDAR Ratio") under financial covenants which the entity is obligated to maintain.

+ References

No definition available.

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- Definition

Represents the fixed percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Represents the additional borrowing capacity available upon request of the entity and satisfaction of certain conditions.

+ References

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

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- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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- 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

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- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=28361426&loc=d3e1314-112600

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 10
-Section 45
-Paragraph 14
-URI http://asc.fasb.org/extlink&oid=28361426&loc=d3e1336-112600

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Line-of-Credit Arrangement
-URI http://asc.fasb.org/extlink&oid=6517033

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- Definition

The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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