Stock Compensation - Activity (Details) - $ / shares	3 Months Ended
Mar. 28, 2020	Mar. 30, 2019
Options Activity
Options granted (shares)	400,994	424,944
Options canceled (shares)	41,489	108,337
Options exercised (shares)	95,438	203,545
Options Weighted Average Exercise Price
Options granted, weighted average exercise price (usd per share)	$ 24.54	$ 20.94
Options canceled, weighted average exercise price (usd per share)	25.15	23.81
Options exercised, weighted average exercise price (usd per share)	$ 11.89	$ 7.80
RSUs
Weighted Average Grant-Date Fair Value Per Share
Equity instruments granted, shares	701,727	573,815
Equity instruments granted, weighted average exercise price (usd per share)	$ 18.67	$ 20.94
PSU's
Weighted Average Grant-Date Fair Value Per Share
Equity instruments granted, shares	305,100	387,568
Equity instruments granted, weighted average exercise price (usd per share)	$ 25.50	$ 20.94

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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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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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- Definition

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

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No definition available.

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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- Definition

Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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