Debt - Summary of Debt (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 29, 2015	Dec. 28, 2014	Mar. 30, 2014
Debt Instrument [Line Items]
Total debt	$ 526,809us-gaap_LongTermDebt	$ 444,759us-gaap_LongTermDebt	$ 433,613us-gaap_LongTermDebt
Total debt	526,809us-gaap_LongTermDebt	444,759us-gaap_LongTermDebt	433,613us-gaap_LongTermDebt
Less: Current portion of debt	0us-gaap_LongTermDebtCurrent	0us-gaap_LongTermDebtCurrent	20,000us-gaap_LongTermDebtCurrent
Long-term debt	526,809us-gaap_LongTermDebtNoncurrent	444,759us-gaap_LongTermDebtNoncurrent	413,613us-gaap_LongTermDebtNoncurrent
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Maturity	2019
Interest Rate, Term	Variable
Interest Paid	Varies
Line of credit	153,000	71,000	40,000
Line of Credit [Member]
Debt Instrument [Line Items]
Maturity	2014
Interest Rate, Term	Variable
Interest Paid	Varies
Line of credit	0	0	20,000
5.30% Senior Notes 2015 [Member]
Debt Instrument [Line Items]
Maturity	2015
Interest Rate	5.30%
Interest Paid	Semi-annually
Senior Notes	100,000	100,000	100,000
5.00% Senior Notes 2016 [Member]
Debt Instrument [Line Items]
Maturity	2016
Interest Rate	5.00%
Interest Paid	Semi-annually
Senior Notes	164,757	164,757	164,757
7.00% Senior Notes 2019 [Member]
Debt Instrument [Line Items]
Maturity	2019
Interest Rate	7.00%
Interest Paid	Semi-annually
Senior Notes	110,000	110,000	110,000
Unamortized discount on Senior Notes	$ (948)	$ (998)	$ (1,144)

Year the debt instrument is scheduled to be fully repaid.

No definition available.

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- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

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- Definition

The average effective interest rate during the reporting period.

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- Definition

Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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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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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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- Definition

Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

+ References

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