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Fair Values of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 23, 2012
Carrying Amount [Member]
Carrying amount and fair value of the debt
Total debt	$ 835,169
Carrying Amount [Member] \| Senior Notes, net of unamortized original issue discount [Member] \| Level 2 [Member]
Carrying amount and fair value of the debt
Total debt	563,551
Carrying Amount [Member] \| Recovery Zone Facility Bonds [Member] \| Level 2 [Member]
Carrying amount and fair value of the debt
Total debt	99,740
Carrying Amount [Member] \| Real estate and equipment notes payable [Member] \| Level 2 [Member]
Carrying amount and fair value of the debt
Total debt	131,757
Carrying Amount [Member] \| Line of credit payable [Member] \| Level 2 [Member]
Carrying amount and fair value of the debt
Total debt	40,121
Fair Value [Member]
Carrying amount and fair value of the debt
Total debt	891,066
Fair Value [Member] \| Senior Notes, net of unamortized original issue discount [Member] \| Level 2 [Member]
Carrying amount and fair value of the debt
Total debt	618,844
Fair Value [Member] \| Recovery Zone Facility Bonds [Member] \| Level 2 [Member]
Carrying amount and fair value of the debt
Total debt	99,740
Fair Value [Member] \| Real estate and equipment notes payable [Member] \| Level 2 [Member]
Carrying amount and fair value of the debt
Total debt	132,362
Fair Value [Member] \| Line of credit payable [Member] \| Level 2 [Member]
Carrying amount and fair value of the debt
Total debt	$ 40,121