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Stock-Based Compensation (Details)	9 Months Ended
Stock-Based Compensation (Details)	Dec. 31, 2012	Dec. 31, 2011
Schedule of the fair value of each stock option granted
Expected dividend yield at time of grant	2.92%	3.21%
Expected stock price volatility	54.00%	54.00%
Risk-free interest rate	0.61%	2.14%
Expected life of option (in years)	5 years	5 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.

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