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Shareholders' Equity and Share-Based Compensation (Details) (Stock Option [Member])	3 Months Ended
	Mar. 30, 2013
Stock Option [Member]
Weighted average assumptions of stock options granted under its stock incentive plans
Expected life	5 years 10 months 24 days
Risk-free interest rate	1.13%
Volatility	54.00%
Dividend yield

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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