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Summary of Significant Accounting Policies - Income Taxes (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Valuation Allowance, Deferred Tax Asset, Change in Amount			$ 2,100,000
Tax provision	7,713,000	3,385,000	11,463,000	3,403,000
Effective income tax rate	34.60%	30.30%	28.70%	12.20%
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities				2,700,000
Income Tax Reconciliation, Tax Credits, Research				1,700,000
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ 700,000		$ 700,000

X

- Definition

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

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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