Stockholder's Investments (Tables)

12 Months Ended

Jul. 31, 2019

Equity [Abstract]

Schedule of Capital Stock

Information as to the Company’s capital stock at July 31, 2019 and 2018 is as follows:

	July 31, 2019				July 31, 2018
	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’ equity for the fiscal years ended July 31, 2019, 2018, and 2017:

	Deferred Compensation			Shares Held in Rabbi Trust, at cost			Total
Balances at July 31, 2016	$	4,624		$	(8,487	)	$	(3,863	)
Shares at July 31, 2016	201,418			347,081
Sale of shares at cost	$	(1,247	)	$	1,288		$	41
Purchase of shares at cost	315			(925		)	(610		)
Effect of plan amendment	4,432			—			4,432
Balances at July 31, 2017	$	8,124		$	(8,124	)	$	—
Shares at July 31, 2017	314,082			314,082
Sale of shares at cost	$	(977	)	$	977		$	—
Purchase of shares at cost	1,075			(1,075		)	—
Balances at July 31, 2018	$	8,222		$	(8,222	)	$	—
Shares at July 31, 2018	299,916			299,916
Sale of shares at cost	$	(928	)	$	928		$	—
Purchase of shares at cost	1,212			(1,212		)	—
Balances at July 31, 2019	$	8,506		$	(8,506	)	$	—
Shares at July 31, 2019	285,533			285,533

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

Black-Scholes Option Valuation Assumptions	2019			2018			2017
Expected term (in years)	6.20			6.07			6.11
Expected volatility	26.05		%	28.19		%	29.55		%
Expected dividend yield	2.71		%	2.72		%	2.70		%
Risk-free interest rate	3.01		%	1.96		%	1.26		%
Weighted-average market value of underlying stock at grant date	$	43.96		$	36.85		$	35.14
Weighted-average exercise price	$	43.96		$	36.85		$	35.14
Weighted-average fair value of options granted during the period	$	9.70		$	7.96		$	7.56

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

for the fiscal year ended July 31, 2019:

	Option Price				Options Outstanding		Weighted Average Exercise Price
Balance as of July 31, 2018	$	19.96	—	$38.83	2,504,633		$	28.23
Options granted	41.70		—	43.98	276,238		43.96
Options exercised	19.96		—	36.85	(1,154,343	)	27.03
Options canceled	20.95		—	43.98	(31,812	)	37.95
Balance as of July 31, 2019	$	19.96	—	$43.98	1,594,716		$	31.63

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, 2019:

	Options Outstanding				Options Outstanding and Exercisable
Range of Exercise Prices	Number of  Shares Outstanding at July 31, 2019	Weighted  Average Remaining Contractual Life (in years)	Weighted Average Exercise Price		Shares Exercisable at July 31, 2019	Weighted  Average Remaining Contractual Life (in years)	Weighted Average Exercise Price
$19.96 - $26.99	476,603	5.9	$	20.64	476,603	5.9	$	20.64
$27.00 - $32.99	285,513	2.8	29.71		285,150	2.8	29.71
$33.00 - $43.98	832,600	8.1	38.58		264,058	7.5	35.77
Total	1,594,716	6.5	$	31.63	1,025,811	5.4	$	27.06

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

The following tables summarize the RSU activity for the fiscal year ended July 31, 2019:

Time-Based RSUs	Shares		Weighted Average Grant Date  Fair Value
Balance as of July 31, 2018	342,856		$	29.05
New grants	84,231		44.20
Vested	(212,788	)	26.73
Forfeited	(25,661	)	31.07
Balance as of July 31, 2019	188,638		$	38.15

The time-based RSUs granted during the fiscal year ended July 31, 2018, had a weighted-average grant-date fair value of $36.80. The total fair value of time-based RSUs vested during the years ended July 31, 2019 and 2018, was $9,859 and $8,237, respectively.

Performance-Based RSUs	Shares	Weighted Average Grant Date Fair Value
Balance as of July 31, 2018	108,097	$	32.57
New grants	50,313	50.70
Balance as of July 31, 2019	158,410	$	38.33

The performance-based RSUs granted during the fiscal year ended July 31, 2019, had a weighted-average grant-date fair value determined by a third-party valuation involving the use of a Monte Carlo simulation. The performance-based RSUs granted during the fiscal year ended July 31, 2018, had a weighted-average grant-date fair value of $33.12. The aggregate intrinsic value of unvested time-based and performance-based RSUs outstanding at July 31, 2019 and 2018, and expected to vest, was $17,953 and $17,249, respectively.