Income Taxes Change in Tax Positions (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Reconciliation of unrecognized tax benefits
Beginning balance	$ 34,627	$ 18,475	$ 30,996
Additions to tax positions for current year	2,362	1,700	2,009
Additions to tax positions for prior years	3,028	18,502	1,709
Reductions to tax positions for current year	0	0	0
Reductions to tax positions for prior years	(3,991)	(3,722)	(732)
Settlements	(1,946)	(308)	(15,246)
Expiration of statute of limitations	(10,742)	(20)	(261)
Ending balance	$ 23,338	$ 34,627	$ 18,475

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 15A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Unrecognized Tax Benefit
-URI http://asc.fasb.org/extlink&oid=6527854

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Amount of decrease in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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