Common Shares Level 3 (Tables)

9 Months Ended

Dec. 31, 2011

Notes To Financial Statements [Abstract]

Schedule of Weighted Average Number of Shares [Table Text Block]

The following is a summary of common shares and common share equivalents outstanding used in the calculations of basic and diluted earnings per share:

	Three Months Ended December 31,		Nine Months Ended December 31,
	2011	2010	2011	2010
Denominator (shares in thousands):
Weighted average common shares outstanding—basic	57,782	59,233	58,594	59,329
Dilutive effect of common share equivalents	455	943	646	832
Weighted average common shares outstanding and common share equivalents—diluted	58,237	60,176	59,240	60,161

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

Options to purchase the following number of common shares were outstanding but excluded from the computation of diluted earnings per share because the combined exercise prices, unamortized fair values, and assumed tax benefits upon exercise were greater than the average market price for the common shares during the periods, so including these options would be anti-dilutive:

	Three Months Ended December 31,		Nine Months Ended December 31,
	2011	2010	2011	2010
	(shares in thousands)		(shares in thousands)
Number of common share options	1,040	370	644	437