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Stockholder's Equity (Tables)

12 Months Ended

Jul. 31, 2018

The exercised stock options, utilizing a cashless exercise, are summarized in the following table:



Period	Options Exercised	Weighted Average Exercise Price		Shares Net Settled for Exercise	Shares Withheld for Taxes ⁽¹⁾	Net Shares to Employees	Weighted Average Share Price for Withholding		Employee Stock Based Tax Withholding (in 000s)
FY 2016—Q4	2,260,000	$	9.32	821,296	586,304	852,400	$	25.65	$	15,039
FY 2017—Q1	18,000,000	7.70		5,408,972	5,255,322	7,335,706	25.62		134,615
FY 2018—Q2	80,000	6.54		11,996	—	68,004	43.60		—


(1)	Shares withheld for taxes are treated as a repurchase of shares for accounting purposes but do not count against the Company’s stock repurchase program.

The following table details stock-based payment compensation expense included in the company’s consolidated statements of income:



	Year Ended July 31,
(In thousands)	2018		2017		2016
General and administrative	$	19,351	$	17,622	$	18,194
Yard operations	3,870		3,286		2,670
Total stock-based payment compensation	$	23,221	$	20,908	$	20,864

A summary of the status of the Company’s non-vested shares and its activity during the year ended July 31, 2018 was as follows:



(In thousands, except per share amounts)	Number of Shares		Weighted Average Grant- date Fair Value
Non-vested shares at July 31, 2017	6,667		$	5.57
Grants of non-vested shares	2,383		8.88
Vested	(3,376	)	5.67
Forfeitures or expirations	(158	)	4.89
Non-vested shares at July 31, 2018	5,516		$	6.96

Stock option activity for the year ended July 31, 2018 was as follows:



(In thousands, except per share and term data)	Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (In years)	Aggregate Intrinsic Value
Outstanding as of July 31, 2017	18,774		$	17.14	6.48	$	269,449
Grants of options	2,383		36.78
Exercises	(3,202	)	14.05
Forfeitures or expirations	(158	)	20.93
Outstanding as of July 31, 2018	17,797		$	20.29	6.19	$	660,268

Exercisable as of July 31, 2018	12,281		$	17.41	5.51	$	490,951

Vested and expected to vest as of July 31, 2018	17,232		$	20.06	6.13	$	643,206

The following table summarizes stock options outstanding and exercisable as of July 31, 2018:



(In thousands, except per share amounts)	Options Outstanding				Options Exercisable
Range of Exercise Prices	Number	Weighted Average Remaining Contractual Life	Weighted Average Exercise Price		Number	Weighted Average Exercise Price
$8.19–$17.64	1,789	3.30	$	11.44	1,726	$	11.25
$17.73–$17.81	9,451	5.75	17.79		7,526	17.80
$18.06–$18.61	2,770	6.06	18.33		2,088	18.29
$18.84–$50.30	3,787	8.74	32.14		941	23.73
Outstanding and exercisable as of July 31, 2018	17,797	6.19	$	20.29	12,281	$	17.41