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Note 4 - Stock Benefit Plans (Detail) - Valuation Assumptions (USD $)	6 Months Ended
	Jun. 30, 2012	Jul. 01, 2011
Expected life (in years)	1 year	4 years
Risk-free interest rates	0.20%	1.50%
Expected volatility	58.00%	44.00%
Weighted average fair value of restricted stock (in Dollars per share)	$ 27.00	$ 11.09

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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