Share-based Compensation (Tables)

12 Months Ended

Aug. 31, 2019

Share Based Compensation [Abstract]

Summary of RSU Activity

A summary of the Company’s RSU activity for the year ended August 31, 2019 is as follows:

	Number of Units (in thousands)			Weighted Average Grant Date Fair Value
Outstanding as of August 31, 2018		812		$	22.59
Granted		262		$	27.61
Vested		(257	)	$	22.75
Forfeited		(19	)	$	24.23
Outstanding as of August 31, 2019		798		$	24.14

Key Assumptions for a Monte-Carlo Simulation Model Utilized to Estimate the Fair Value of TSR awards

The Company estimates the fair value of TSR awards using a Monte-Carlo simulation model utilizing several key assumptions, including the following for TSR awards granted during the fiscal years ended August 31:

	2019			2018			2017
Expected share price volatility (SSI)		42.5	%		44.3	%	40.9 - 43.3%
Expected share price volatility (Peer group)		51.4	%		55.4	%	52.3 - 55.1%
Expected correlation to peer group companies		35.6	%		35.4	%	36.2 - 36.5%
Risk-free rate of return		2.89	%		1.79	%	1.11 - 1.31%

Summary of Performance-based Awards Activity

A summary of the Company’s performance-based awards activity for the year ended August 31, 2019 is as follows:

	Number of Awards (in thousands)			Weighted Average Grant Date Fair Value
Outstanding as of August 31, 2018		880		$	22.09
Granted		255		$	28.37
Performance achievement(1)		170		$	18.54
Vested		(500	)	$	18.78
Forfeited		(32	)	$	22.75
Outstanding as of August 31, 2019		773		$	25.49

(1) Reflects the net number of awards achieved above target levels based on actual performance measured at the end of the performance period.