Stockholder's Investment (Tables)

12 Months Ended

Jul. 31, 2011

Stockholder's Investment (Tables) [Abstract]

Schedule of Capital Units

	July 31, 2011						July 31, 2010
	Shares		Shares		(thousands)		Shares		Shares		(thousands)
	Authorized		Issued		Amount		Authorized		Issued		Amount
Preferred Stock, $.01 par value		5,000,000						5,000,000
Cumulative Preferred Stock: 6% Cumulative		5,000						5,000
1972 Series		10,000						10,000
1979 Series		30,000						30,000
Common Stock, $.01 par value:
Class A Nonvoting		100,000,000		51,261,487	$	513		100,000,000		51,261,487	$	513
Class B Voting		10,000,000		3,538,628		35		10,000,000		3,538,628		35
					$	548					$	548

Schedule of Stockholders' Investment

	Unearned						Shares Held
	Restricted			Deferred			in Rabbi
	Stock			Compensation			Trust, at cost			Total
Balances at July 31, 2008	$	(6,182	)	$	13,643		$	(12,956	)	$	(5,495	)
Shares at July 31, 2008					690,539			690,539
Sale of shares at cost		—			(1,655	)		1,223			(432	)
Purchase of shares at cost		—			1,294			(1,294	)		—
Amortization of restricted stock		1,435			—			—			1,435
Balances at July 31, 2009	$	(4,747	)	$	13,282		$	(13,027	)	$	(4,492	)
Shares at July 31, 2009					671,650			671,650
Sale of shares at cost		—			(1,247	)		1,536			289
Purchase of shares at cost		—			813			(813	)		—
Amortization of restricted stock		1,374			—			—			1,374
Balances at July 31, 2010	$	(3,373	)	$	12,848		$	(12,304	)	$	(2,829	)
Shares at July 31, 2010					614,988			614,988
Sale of shares at cost		—			(1,421	)		1,375			(46	)
Purchase of shares at cost		—			666			(666	)		—
Issuance of restricted stock		(2,835	)		—			—			(2,835	)
Amortization of restricted stock		846			—			—			846
Balances at July 31, 2011	$	(5,362	)	$	12,093		$	(11,595	)	$	(4,864	)
Shares at July 31, 2011					560,078			560,078

Schedule of Stock Option Activity

						Weighted
						Average
			Options			Exercise
	Option Price		Outstanding			Price
Balance, July 31, 2008	$	9.59 – $40.37		3,985,205		$	29.43
Options granted		17.23 – 35.42		614,000			21.26
Options exercised		9.59 – 38.19		(138,934	)		15.75
Options cancelled		20.95 – 38.31		(479,665	)		35.02
Balance, July 31, 2009	$	13.31-$40.37		3,980,606		$	27.96
Options granted		24.78 – 33.28		1,446,500			29.08
Options exercised		14.16 – 31.54		(241,403	)		18.16
Options cancelled		15.28 – 38.31		(76,967	)		31.91
Balance, July 31, 2010	$	13.31-$40.37		5,108,736		$	28.69
Options granted		28.35 – 37.95		1,365,500			28.86
Options exercised		14.16 – 29.78		(417,888	)		19.62
Options cancelled		16.39 – 38.31		(330,331	)		31.37
Balance, July 31, 2011	$	13.31 – $40.37		5,726,017		$	29.24

Schedule of Stock Options Outstanding

							Options Outstanding and
	Options Outstanding						Exercisable
			Weighted Average		Weighted		Shares		Weighted
	Number of Shares		Remaining		Average		Exercisable		Average
Range of	Outstanding at		Contractual Life		Exercise		at July 31,		Exercise
Exercise Prices	July 31, 2011		(in years)		Price		2011		Price
Up to $14.99		200,000		1.6	$	13.31		200,000	$	13.31
$15.00 to $29.99		3,900,515		7.2		26.68		1,516,313		24.07
$30.00 and up		1,625,502		5.0		37.33		1,600,502		37.34
Total		5,726,017		6.4		29.24		3,316,815		29.83