Equity Activity - Share Based Compensation (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 26, 2015 USD ($) shares	Sep. 26, 2015 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense \| $	$ 12.6	$ 12.6
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted in period		67,937
Shares forfeited in period		(64,042)
Shares vested in period		61,829
Previously recognized share based compensation reversed in period \| $	$ 1.7
Nonvested shares outstanding	183,570	183,570
Restricted Stock \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares paid for tax withholding		17,437
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercised in period		49,204
Employee Stock Option \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares paid for tax withholding		26,056

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Publisher SEC

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Unrecognized cost of unvested share-based compensation awards.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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Number of share options (or share units) exercised during the current period.

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