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Weighted-Average Assumptions Used to Value Option Awards (Detail) (Fiscal 2014 Board of Directors Grant [Member])	9 Months Ended
	Sep. 30, 2013
Fiscal 2014 Board of Directors Grant [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend Yield	2.00%
Expected Volatility	44.60%
Risk Free Interest Rate	2.00%
Expected Life	7 years

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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