Stockholder's Investments (Tables)

12 Months Ended

Jul. 31, 2016

Equity [Abstract]

Schedule of Capital Stock

Information as to the Company’s capital stock at July 31, 2016 and 2015 is as follows:

	July 31, 2016				July 31, 2015
	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 fiscal years ended July 31, 2016, 2015, and 2014:

	Unearned Restricted Stock			Deferred Compensation			Shares Held in Rabbi Trust, at cost			Total
Balances at July 31, 2013	$	(1,137	)	$	11,040		$	(10,623	)	$	(720	)
Shares at July 31, 2013				469,797			469,797
Sale of shares at cost	—			(1,637		)	1,496			(141		)
Purchase of shares at cost	—			821			(821		)	—
Effect of plan amendment	—			(2,435		)	—			(2,435		)
Amortization of restricted stock	1,137			—			—			1,137
Balances at July 31, 2014	—			$	7,789		$	(9,948	)	(2,159		)
Shares at July 31, 2014				338,711			423,415
Sale of shares at cost	$	—		(2,325		)	2,235			$	(90	)
Purchase of shares at cost	—			220			(1,035		)	(815		)
Balances at July 31, 2015	$	—		$	5,684		$	(8,748	)	$	(3,064	)
Shares at July 31, 2015				252,261			362,025
Sale of shares at cost	—			(1,238		)	1,278			40
Purchase of shares at cost	—			178			(1,017		)	(839		)
Balances at July 31, 2016	$	—		$	4,624		$	(8,487	)	$	(3,863	)
Shares at July 31, 2016				201,418			347,081

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

Black-Scholes Option Valuation Assumptions	2016			2015			2014
Expected term (in years)	6.11			6.05			5.97
Expected volatility	29.95		%	34.01		%	37.32		%
Expected dividend yield	2.59		%	2.48		%	2.35		%
Risk-free interest rate	1.64		%	1.90		%	1.80		%
Weighted-average market value of underlying stock at grant date	$	20.02		$	22.76		$	30.98
Weighted-average exercise price	$	20.02		$	22.76		$	30.98
Weighted-average fair value of options granted during the period	$	4.58		$	6.12		$	9.17

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

for the fiscal year ended July 31, 2016:

	Option Price				Options Outstanding		Weighted Average Exercise Price
Balance as of July 31, 2015	$	20.95	—	$38.31	3,500,951		$	29.64
Options granted	19.96		—	25.35	881,744		20.02
Options exercised	20.95		—	31.07	(194,419	)	26.98
Options cancelled	19.96		—	38.31	(479,570	)	30.89
Balance as of July 31, 2016	$	19.96	—	$38.31	3,708,706		$	27.33

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, 2016:

	Options Outstanding				Options Outstanding and Exercisable
Range of Exercise Prices	Number of  Shares Outstanding at July 31, 2016	Weighted  Average Remaining Contractual Life (in years)	Weighted Average Exercise Price		Shares Exercisable at July 31, 2016	Weighted  Average Remaining Contractual Life (in years)	Weighted Average Exercise Price
$19.96 - $26.99	1,433,278	8.1	$	21.80	291,899	5.2	$	20.97
$27.00 - $32.99	1,696,428	4.9	29.05		1,617,628	4.7	29.12
$33.00 - $38.31	579,000	1.3	37.78		579,000	1.3	37.78
Total	3,708,706	5.6	27.61		2,488,527	4.0	$	30.18

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity

The following tables summarize the RSU and restricted share activity for the fiscal year ended July 31, 2016:

Service-Based Restricted Shares and RSUs	Shares		Weighted Average Grant Date  Fair Value
Balance as of July 31, 2015	677,454		$	24.72
New grants	173,394		20.07
Vested	(113,640	)	24.97
Forfeited	(58,827	)	23.81
Balance as of July 31, 2016	678,381		$	23.57

The aggregate intrinsic value of unvested RSU's expected to vest at July 31, 2016, was $21,803. The total fair value of RSU's vested during the twelve months ended July 31, 2016 and 2015, was $2,797 and $805, respectively. The service-based RSUs granted during the fiscal year ended July 31, 2015, had a weighted-average grant-date fair value of $24.28.