Stockholder's Investments (Tables)

12 Months Ended

Jul. 31, 2013

Equity [Abstract]

Schedule of Capital Stock

Information as to the Company’s capital stock at July 31, 2013 and 2012 is as follows:

	July 31, 2013				July 31, 2012
	Shares Authorized	Shares Issued	(thousands) Amount		Shares Authorized	Shares Issued	(thousands) 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 Other Activity in Stockholders' Investment

The following is a summary of other activity in stockholders’ investment for the years ended July 31, 2013, 2012, and 2011:

	Unearned Restricted Stock			Deferred Compensation			Shares Held in Rabbi Trust, at cost			Total
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
Sale of shares at cost	—			(1,407		)	1,368			(39		)
Purchase of shares at cost	—			924			(924		)	—
Amortization of restricted stock	1,599			—			—			1,599
Balances at July 31, 2012	$	(3,763	)	$	11,610		$	(11,151	)	$	(3,304	)
Shares at July 31, 2012				517,105			517,105
Sale of shares at cost	—			(1,461		)	1,419			(42		)
Purchase of shares at cost	—			891			(891		)	—
Forfeitures of restricted stock	838									838
Amortization of restricted stock	1,788			—			—			1,788
Balances at July 31, 2013	$	(1,137	)	$	11,040		$	(10,623	)	$	(720	)
Shares at July 31, 2013				469,797			469,797

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range

The following table summarizes information about stock options outstanding at July 31, 2013:

	Options Outstanding				Options Outstanding  and Exercisable
Range of Exercise Prices	Number of Shares Outstanding at July 31, 2013	Weighted  Average Remaining Contractual Life (in years)	Weighted Average Exercise Price		Shares Exercisable at July 31, 2013	Weighted Average Exercise Price
$17.00 - $27.99	939,749	6.4	$	24.67	561,740	$	23.11
$28.00 - $37.99	3,361,336	6.0	30.54		1,943,803	31.05
$38.00 and up	805,500	3.2	38.26		805,500	38.26
Total	5,106,585	5.7	30.68		3,311,043	31.46

Summary of Stock Option Activity under Company's Share-Based Compensation Plans

Changes in the options are as follows:

	Option Price	Options Outstanding		Weighted Average Exercise Price
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
Options granted	27.00 – 33.54	1,212,450		27.91
Options exercised	13.31 – 29.78	(266,991	)	20.21
Options cancelled	16.00 – 38.31	(417,725	)	31.16
Balance, July 31, 2012	$13.31–$40.37	6,253,751		$	29.24
Options granted	30.21 – 36.25	828,450		30.58
Options exercised	13.31 – 31.54	(1,080,089	)	22.79
Options cancelled	16.39 – 38.31	(895,527	)	30.02
Balance, July 31, 2013	$17.23 – $40.37	5,106,585		$	30.68