Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 26, 2015	Sep. 27, 2014	Sep. 26, 2015	Sep. 27, 2014	Dec. 27, 2014
Income Taxes [Abstract]
Provision for income taxes	$ 6,727	$ 3,087	$ 7,943	$ 9,405
Effective tax rate	50.00%	36.00%	74.00%	131.00%
Federal statutory rate	35.00%	35.00%	35.00%	35.00%
Unrecognized tax benefits	$ 41,100		$ 41,100		$ 41,300

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

-Topic 740

-SubTopic 10

-Section 50

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

+ References

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

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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

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-Name Accounting Standards Codification

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

+ References

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