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Equity-Based Compensation (Tables)
 12 Months Ended
Sep. 30, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]  
Schedule of Restricted stock award activity

A summary of the Company’s restricted stock award activity for the year ended September 30, 2021 is presented in the following table:

 

 

 

Shares

 

 

Weighted-Avg Purchase Price per Share

 

Outstanding at September 30, 2020

 

 

1,123,000

 

 

$

15.12

 

Granted

 

 

—

 

 

 

—

 

Less: Redeemed

 

 

253,000

 

 

$

17.54

 

Less: Forfeited

 

 

68,000

 

 

$

16.47

 

Outstanding at September 30, 2021

 

 

802,000

 

 

$

14.31

 
Schedule of Restricted stock unit activity

A summary of the Company’s restricted stock unit activity for the year ended September 30, 2021 is presented in the following table:

 

 

 

Shares

 

 

Weighted-Avg Purchase Price per Share

 

Outstanding at September 30, 2020

 

 

749,000

 

 

$

16.58

 

Granted

 

 

876,000

 

 

$

14.28

 

Exercised

 

 

221,000

 

 

$

16.68

 

Forfeited

 

 

105,000

 

 

$

15.20

 

Outstanding at September 30, 2021

 

 

1,299,000

 

 

$

15.14

 
Summary of Stock Options Activity

A summary of the Company’s stock option activity for the year ended September 30, 2021 is presented in the following table:

 

 

 

Shares

 

 

Weighted-Avg Purchase Price per Share

 

Outstanding at September 30, 2020

 

 

6,711,000

 

 

$

20.08

 

Granted

 

 

687,000

 

 

$

13.78

 

Exercised

 

 

26,000

 

 

$

13.98

 

Forfeited

 

 

355,000

 

 

$

20.84

 

Outstanding at September 30, 2021

 

 

7,017,000

 

 

$

21.55

 

Vested and exercisable at September 30, 2021

 

 

3,432,000

 

 

$

20.81

 

Expected to vest after September 30, 2021

 

 

3,585,000

 

 

$

22.42

 
Schedule of Weighted-Average Assumptions Used in Valuation of Unit Awards, Restricted Stock Unit Awards Were Converted and Stock Option Awards Granted or Modified

The weighted-average assumptions used in the valuation of Unit awards, restricted stock into which such Unit awards were converted and stock option awards granted or modified for the years ended September 30, 2021, September 30, 2020 and September 30, 2019 are presented in the table below:

 

 

 

Fiscal Year Ended

 

 

 

September 30,
2021

 

 

September 30,
2020

 

 

September 30,
2019

 

Assumptions:

 

 

 

 

 

 

 

 

 

Risk-free interest rate

 

 

0.49

%

 

 

1.56

%

 

 

2.85

%

Dividend yield

 

 

—

 

 

 

—

 

 

 

—

 

Volatility factor

 

 

54.40

%

 

 

43.51

%

 

 

38.85

%

Expected term (in years)

 

 

6.4

 

 

 

6.3

 

 

 

6.3