Common Shares and Stock Based Compensation (Tables)

12 Months Ended

Feb. 29, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Stock option transactions and prices

	Number of Class A Options		Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic  Value (in thousands)
Outstanding at February 28, 2011		4,526,821	$	20.12		6.0	$	14,278
Granted		-		-
Exercised		(682,297)		23.25
Expired		(32,391)		20.67
Forfeited		(214,706)		24.72
Outstanding at February 29, 2012		3,597,427	$	20.96		5.2	$	3,375
Exercisable at February 29, 2012		3,339,219	$	20.69		5.2	$	3,375

	Number of Class B Options		Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Outstanding at February 28, 2011		1,166,395	$	19.96		5.7	$	2,578
Granted		-		-
Exercised		(245,250)		24.60
Expired		(63,564)		22.26
Forfeited		-		-
Outstanding at February 29, 2012		857,581	$	23.06		4.7	$	420
Exercisable at February 29, 2012		722,415	$	24.11		4.5	$	-

Estimated fair value of the different class of stocks under the assumptions of Black-Scholes option-pricing model

	2011			2010
Risk-free interest rate		1.4	%		1.3	%
Dividend yield		2.3	%		6.0	%
Expected stock volatility		0.81			0.71
Expected life in years		2.3			2.4

	Number of Class B Performance Shares		Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Unvested at February 28, 2011		141,000		1.3	$	3,053
Credited		-
Vested		(94,000)
Forfeited		-
Unvested at February 29, 2012		47,000		1.0	$	705

The fair value of the performance shares was estimated using the Black-Scholes option-pricing model with the following assumptions:

	2011			2010
Risk-free interest rate		1.62	%		1.54	%
Dividend yield		4.38	%		4.48	%
Expected stock volatility		0.76			0.78
Expected life in years		2.5			2.3

Summary of the activity related to performance shares and restricted stock units

	Number of Class A Performance Shares		Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Unvested at February 28, 2011		751,500		1.3	$	16,270
Credited		-
Vested		(482,500)
Forfeited		(20,000)
Unvested at February 29, 2012		249,000		1.0	$	3,735

	Number of Class A Restricted Stock Units			Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Unvested at February 28, 2011		110,749			0.7	$	2,398
Granted		248,416
Vested		(50,803	)
Forfeited		(16,867	)
Unvested at February 29, 2012		291,495			0.6	$	4,372

	Number of Class B Restricted Stock Units			Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Unvested at February 28, 2011		29,675			1.1	$	642
Granted		54,870
Vested		(10,276	)
Forfeited		—
Unvested at February 29, 2012		74,269			1.0	$	1,114

	2012			2011
Risk-free interest rate		0.67	%		1.09	%
Dividend yield		2.6	%		2.3	%
Expected stock volatility		0.59			0.90
Expected life in years		1.6			1.6