Earnings per Unit (Details) (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 26, 2011	Jun. 27, 2010	Jun. 26, 2011	Jun. 27, 2010	Jun. 26, 2011	Jun. 27, 2010
Basic weighted average units outstanding	55,346	55,324	55,341	55,266	55,338	55,254
Effect of dilutive units:
Unit options	0	0	0	0	0	38
Phantom units	479	0	0	0	0	549
Diluted weighted average units outstanding	55,825	55,324	55,341	55,266	55,338	55,841
Net income (loss) per unit - basic	$ 0.08	$ (0.08)	$ (1.45)	$ (0.8)	$ (1.22)	$ 0.67
Net income (loss) per unit - diluted	$ 0.08	$ (0.08)	$ (1.45)	$ (0.8)	$ (1.22)	$ 0.67
Unit Options [Member]
Effect of dilutive units:
Antidilutive securities excluded from the computation of earnings per unit	55,000	263,000	71,000	325,000	212,000	437,000

Antidilutive Securities Excluded From Computation Of Earnings Per Unit Amount

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- Definition

Incremental Units Attributable To Phantom Unit Options

+ Details

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- Definition

Incremental Units Attributable To Share Based Payment Arrangements

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- Definition

Net income (loss) allocated to each outstanding limited partnership unit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section F

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187171-122770

+ Details

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- Definition

Net Income or Loss allocated to each limited partner unit outstanding during the reporting period and each unit that would have been outstanding assuming the issuance of limited partner units for all dilutive potential units outstanding during the reporting period. Limited partners have limited liability and do not manage the partnership.

+ References

+ Details

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- Definition

Weighted average number of general partnership units outstanding determined by relating the portion of time within a reporting period that general partnership units have been outstanding to the total time in that period.

+ References

+ Details

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- Definition

Weighted average number of limited partnership units outstanding determined by relating the portion of time within a reporting period that limited partnership units have been outstanding to the total time in that period. Used in the calculation of diluted net income or loss per limited partnership unit.

+ References

+ Details

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