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Carrying Amount and Fair Value of Debt (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	$ 860,010
Carrying Amount | Line of credit payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	62,000
Carrying Amount | Level 2 | Senior Notes, net of unamortized original issue discount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	564,791
Carrying Amount | Level 2 | Recovery Zone Facility Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	99,740
Carrying Amount | Level 2 | Real estate and equipment notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	133,479
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	897,800
Fair Value | Line of credit payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	62,000
Fair Value | Level 2 | Senior Notes, net of unamortized original issue discount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	602,313
Fair Value | Level 2 | Recovery Zone Facility Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	99,740
Fair Value | Level 2 | Real estate and equipment notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated fair value of debt	$ 133,747

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- Details

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Balance Type:	na
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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

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