Stock-Based Compensation (Stock Incentive Plan) (Details) (Stock Option [Member], USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Apr. 01, 2014
Stock Option [Member]
Options, Outstanding [Roll Forward]
Outstanding, beginning of period	3,245,264	3,309,872
Granted	176,016	0
Exercised	122,887	142,249
Forfeited	73,315	9,709
Outstanding, end of period	3,225,078	3,157,914
Weighted average fair market value on option grant date	$ 6.23
Stock based compensation expense	$ 161	$ 140
Capitalized stock based compensation expense	$ 41	$ 18

Share-based Compensation Arrangement by Share-based Payment Award, Options, Cancelled in Period

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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.

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

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

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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

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