XML 126 R106.htm IDEA: XBRL DOCUMENT

Stock Compensation Plans (Details) (Stock Only Stock Appreciation Rights)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock Only Stock Appreciation Rights
Weighted-average fair values and assumptions for options granted
Risk free interest rate	0.00%	0.00%	1.96%
Dividend yield	0.00%	0.00%	1.10%
Volatility factor of the expected market price of the Company's common shares	0.00%	0.00%	56.00%
Expected life for the options (in years)	0 years	0 years	4 years 1 month 6 days

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.

+ References+ Details