Common Shares and Stock-Based Compensation (Tables)

12 Months Ended

Feb. 28, 2013

Estimate Fair Value of Performance Shares Using Assumptions of Black-Scholes Option-Pricing Model

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

	2011
Risk-free interest rate		1.4	%
Dividend yield		2.3	%
Expected stock volatility		0.81
Expected life in years		2.3

Performance shares [Member]

Estimate Fair Value of Performance Shares Using Assumptions of Black-Scholes Option-Pricing Model

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

	2013			2011
Risk-free interest rate		0.38	%		1.62	%
Dividend yield		4.20	%		4.38	%
Expected stock volatility		0.43			0.76
Expected life in years		2.8			2.5

Restricted Stock [Member]

Estimate Fair Value of Performance Shares Using Assumptions of Black-Scholes Option-Pricing Model

The fair value of the restricted stock units is estimated using the Black-Scholes option-pricing model with the following assumptions:

	2013			2012			2011
Risk-free interest rate		0.29	%		0.67	%		1.09	%
Dividend yield		3.79	%		2.60	%		2.30	%
Expected stock volatility		0.42			0.59			0.90
Expected life in years		1.6			1.6			1.6

Common Class A And Class B [Member]

Stock Option Transactions and Prices

Stock option transactions and prices are summarized as follows:

	Number of Class A Options			Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Outstanding at February 29, 2012		3,597,427		$	20.96		5.2	$	3,375
Exercised		(117,520	)		16.06
Expired		(30,480	)		14.90
Forfeited		(213,474	)		23.40
Outstanding at February 28, 2013		3,235,953		$	21.23		4.3	$	3,352
Exercisable at February 28, 2013		3,235,953		$	21.23		4.3	$	3,352

	Number of Class B Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic  Value (in thousands)
Outstanding at February 29, 2012		857,581	$	23.06		4.7	$	420
Exercised		—		—
Expired		—		—
Forfeited		—		—
Outstanding at February 28, 2013		857,581	$	23.06		3.7	$	489
Exercisable at February 28, 2013		821,123	$	22.99		3.6	$	489

Common Class A And Class B [Member] | Performance shares [Member]

Summary of Activity Related Performance Shares and Restricted Stock Units

The following table summarizes the activity related to performance shares during 2013:

	Number of Class A Performance Shares			Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Unvested at February 29, 2012		249,000			1.0	$	3,735
Credited		697,055
Vested		(235,209	)
Forfeited		(99,284	)
Unvested at February 28, 2013		611,562			2.2	$	9,907

	Number of Class B Performance Shares			Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Unvested at February 29, 2012		47,000			1.0	$	705
Credited		354,464
Vested		(47,000	)
Forfeited		—
Unvested at February 28, 2013		354,464			2.2	$	5,742

Common Class A And Class B [Member] | Restricted Stock [Member]

Summary of Activity Related Performance Shares and Restricted Stock Units

The following table summarizes the activity related to restricted stock units during 2013:

	Number of Class A Restricted Stock Units			Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Unvested at February 29, 2012		291,495			0.6	$	4,372
Granted		358,000
Vested		(173,912	)
Forfeited		(27,885	)
Unvested at February 28, 2013		447,698			0.6	$	7,253

	Number of Class B Restricted Stock Units			Weighted- Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Unvested at February 29, 2012		74,269			1.0	$	1,114
Granted		72,648
Vested		(29,316	)
Forfeited		—
Unvested at February 28, 2013		117,601			0.9	$	1,905