Stock Based Compensation (Details 1) (USD $) In Thousands, except Per Share data	6 Months Ended
Jul. 03, 2011
Changes in stock options outstanding
Options outstanding at December 31, 2010, Number of Shares	71,607
Options outstanding at December 31, 2010, Weighted-Average Exercise Price Per Share	$ 6.97
Options granted, number of shares	8,869
Options granted, Weighted-Average Exercise Price Per Share	$ 6.35
Options exercised, Number of Shares	(5,327)
Options exercised, Weighted-Average Exercise Price Per Share	$ 5.03
Options canceled number of Shares	(5,098)
Options canceled, Weighted-Average Exercise Price Per Share	$ 15.99
Options outstanding at July 3, 2011, Number of Shares	70,051
Options outstanding at July 3, 2011, Weighted-Average Exercise Price Per Share	$ 6.38
Options exercisable at July 3, 2011, Number of Shares	44,473
Options exercisable at July 3, 2011, Weighted-Average Exercise Price Per Share	$ 7.10

Changes in stock options outstanding.

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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.

+ References

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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.

+ References

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- Definition

The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period.

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- Definition

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.

+ References

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The combined weighted average exercise price associated with stock options during the period that have either lapsed or been forfeited.

+ References

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

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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 stock options awarded under the plan during the reporting period.

+ References

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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

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- Definition

The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan.

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

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