Leverage Ratio Required

No definition available.

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- Definition

Line of Credit Facility Outstanding Stock Percentage that Should be Acquired to Trigger Event of Default

+ References

No definition available.

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- Definition

Line of credit facility percentage of security interest non voting capital stock outstanding.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility percentage of security interest voting capital stock outstanding.

+ References

No definition available.

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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

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 cash paid for interest. Includes, but is not limited to, payment to settle zero-coupon bond attributable to accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions 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.

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Balance Type:	credit
Period Type:	instant

- Definition

Identification of whether the entity has been in compliance with any credit facility debt covenants during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- 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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Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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- Definition

Date the credit facility first became available, in CCYY-MM-DD format.

+ References

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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

+ Details

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Balance Type:	credit
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- 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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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Debt - Additional Information (Detail) - USD ($)	12 Months Ended
Debt - Additional Information (Detail) - USD ($)	Dec. 30, 2017	Dec. 31, 2016	Dec. 26, 2015
Debt Instrument [Line Items]
Debt Outstanding Excluding Capital Lease Obligations	$ 0	$ 0
Interest paid	$ 3,891,000	3,794,000	$ 3,012,000
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, initiation date	Jun. 02, 2016
Credit facility, expiration date	Jun. 02, 2021
Credit facility, borrowing capacity	$ 250,000,000
Credit facility, maximum borrowing capacity	$ 400,000,000
Security interest on voting capital stock	65.00%
Security interest on non voting capital stock	100.00%
Borrowings outstanding	$ 0	$ 0
Credit facility, debt covenants compliance	The Company is currently in compliance with all of the debt covenants under the Credit Agreement.
Revolving Credit Facility \| Federal Reserve Bank of New York
Debt Instrument [Line Items]
Borrowings, basis spread on variable rate	0.50%
Revolving Credit Facility \| London Interbank Offered Rate
Debt Instrument [Line Items]
Borrowings, basis spread on variable rate	1.25%
Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Credit facility, unused credit commitment fee	0.15%
Credit facility event of default, minimum percentage that a person or group should acquire outstanding capital stock	35.00%
Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Credit facility, unused credit commitment fee	0.25%
Maximum Leverage ratio beyond which amount of cash dividends and other distributions to stockholders is limited	250.00%
Letter of Credit
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 50,000,000