Income Taxes (Details) (USD $)	3 Months Ended
Mar. 28, 2015	Mar. 29, 2014	Dec. 27, 2014
Income Taxes [Abstract]
Provision for income taxes	$ 2,731,000us-gaap_IncomeTaxExpenseBenefit	$ 1,847,000us-gaap_IncomeTaxExpenseBenefit
Effective tax rate	37.00%	(77.00%)
Federal statutory rate	35.00%	35.00%
Unrecognized tax benefits	$ 40,600,000us-gaap_UnrecognizedTaxBenefits		$ 41,300,000us-gaap_UnrecognizedTaxBenefits

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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-Glossary Income Tax Expense (or Benefit)

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- Definition

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

+ References

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-Publisher FASB

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-Glossary Unrecognized Tax Benefit

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