Debt refinancing costs.

No definition available.

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- Definition

Write off of debt discount.

+ 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.

+ Details

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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.

+ Details

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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.

+ Details

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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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- Definition

Amount of the required periodic payments including both interest and principal payments.

+ 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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

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- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629

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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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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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Period Type:	instant

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

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Balance Type:	na
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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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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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Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for incremental, external costs directly pertaining to an early extinguishment of debt, including legal costs and prepayment penalties, and excluding interest and repayment of debt principal.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.8)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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Credit Agreements - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 11, 2014	Jul. 31, 2014	Sep. 30, 2015	Sep. 24, 2014	Sep. 30, 2015	Sep. 24, 2014
Debt Instrument [Line Items]
Revolving credit facility maturity period					Dec. 11, 2019
Debt instrument basis percentage					1.00%
Interest rate description					(a) the federal funds rate plus 0.50%, (b) the prime rate of Bank of America, or (c) LIBOR plus 1.00%. For LIBOR loans, the margin is in the range of 1.75% to 2.50%, and for base rate loans the margin is in the range of 0.75% to 1.50%. The margin was initially set at 2.00% for LIBOR loans and at 1.00% for base rate loans until the delivery of financial statements and a compliance certificate for the first quarter of 2015. The interest rate range was 1.94% to 1.95% and 1.93% to 2.63% for the thirteen and thirty-nine weeks ended September 30, 2015, respectively.
Early extinguishment of debt				$ 5,082,000		$ 5,082,000
Call premium						$ 1,512,000
Transaction costs	$ 1,500,000
Senior Secured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Principal payments prior to maturity					$ 0
Debt Instrument, Periodic Payment					$ 40,000,000
Minimum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			1.94%		1.93%
Maximum [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate			1.95%		2.63%
Federal Funds Rate [Member]
Debt Instrument [Line Items]
Debt instrument basis percentage					0.50%
Base Rate [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument basis percentage					0.75%
Base Rate [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument basis percentage					1.50%
Initial Margin Rate [Member]
Debt Instrument [Line Items]
Debt instrument basis percentage					2.00%
LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument basis percentage					1.00%
LIBOR [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Debt instrument basis percentage					1.75%
LIBOR [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Debt instrument basis percentage					2.50%
2014 Credit Agreement [Member]
Debt Instrument [Line Items]
Senior secured revolving facility	200,000,000
Letters of credit outstanding			$ 7,000,000		$ 7,000,000
Amount of borrowings available			$ 68,000,000		$ 68,000,000
2013 Second Lien Credit Agreement [Member]
Debt Instrument [Line Items]
Early extinguishment of debt		$ 5,100,000
Call premium		1,500,000
Write off of the remaining unamortized deferred finance costs		2,700,000
Write off of the unamortized discount		$ 900,000
Swing Line Loans [Member] \| 2014 Credit Agreement [Member]
Debt Instrument [Line Items]
Sub limit of revolving facility	15,000,000
Letter of Credit [Member] \| 2014 Credit Agreement [Member]
Debt Instrument [Line Items]
Sub limit of revolving facility	$ 15,000,000