Stock-based Compensation Plan (Stock Option Activity) (Details) (USD $)	6 Months Ended
Jul. 01, 2014	Dec. 31, 2013
Number of Options
Beginning balance, outstanding (shares)	249,019
Granted (shares)	22,765
Exercised (shares)	0
Forfeited or expired (shares)	(9,936)
Ending balance, outstanding (shares)	261,848
Total options exercisable	95,012
Weighted Average Exercise Price
Beginning balance, outstanding (per share)	$ 103	$ 146
Granted (per share)	$ 143
Exercised (per share)	$ 0
Forfeited or expired (per share)	$ 145
Ending balance, outstanding (per share)	$ 103	$ 146
Exercisable (per share)	$ 119
Weighted Average Remaining Contractual Term (in years)
Outstanding	7 years 8 months 12 days
Exercisable	7 years 6 months

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For presentations that combine terminations, 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 or that expired.

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Weighted average price of options that were either forfeited or expired.

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

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No definition available.

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

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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

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

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