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STOCK PLANS AND SHARE-BASED COMPENSATION (Fair Value Assumptions) (Details) (Employee Stock [Member], USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rates	0.11%	0.09%
Expected volatility rates	33.00%	48.00%
Expected dividend yield	0.80%	0.54%
Expected term of stock options/purchase right (in years)	6 months	6 months
Weighted-average estimated fair value of purchase rights	$ 9.14	$ 10.42

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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