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Stock-Based Compensation (Tables)
6 Months Ended
Mar. 31, 2022
Stock-Based Compensation  
Summary of activity under the restricted stock plan

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Weighted

 

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Average Fair

 

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Number of

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Value At

 

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​

Shares

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Grant Date

 

Unvested at September 30, 2021

 

142,269

​

$

26.78

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Granted

 

31,704

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$

44.07

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Forfeited / Canceled

 

(6,522)

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$

28.79

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Vested

 

(44,615)

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$

29.88

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Unvested at March 31, 2022

 

122,836

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$

30.01

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Expected to vest

 

122,836

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$

30.01

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Summary of activity under the deferred restricted stock plan

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Weighted

 

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Average Fair

 

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Number of

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Value At

 

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Shares

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Grant Date

 

Unvested and deferred at September 30, 2021

 

7,398

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$

22.64

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Granted

 

3,801

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$

44.07

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Vested and deferred

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(7,398)

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$

22.64

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Unvested and deferred at March 31, 2022

 

3,801

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$

44.07

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Vested and deferred at March 31, 2022

 

20,500

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$

29.23

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Summary of activity under the 2016 Incentive Compensation Plan with respect to performance shares

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Weighted

 

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Average Fair

 

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Number of

​

Value At

 

​

​

Shares

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Grant Date

 

Unvested at September 30, 2021

 

87,193

​

$

37.24

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Granted

 

21,520

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$

61.04

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Vested

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(24,121)

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$

43.42

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Forfeited / Canceled

​

(8,172)

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$

42.97

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Unvested at March 31, 2022

 

76,420

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$

41.37

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Schedule of fair value assumptions used for grants under the stock option plan

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Fair

    

Dividend

    

Risk-free

    

Expected

    

Expected

 

Grant Date

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Value

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Yield

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Interest Rate

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Volatility

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Life

 

November 23, 2021

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$

15.02

 

2.00

%  

1.22

%  

45

%  

5

years

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Summary of activity under the stock option plans

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Weighted

 

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Aggregate

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Weighted

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Average

 

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Intrinsic

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Average

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Remaining

 

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Number of

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Value

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Exercise

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Contractual

 

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Shares

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(000s)

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Prices

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Life

 

Outstanding at September 30, 2021

 

702,576

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$

34.68

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Granted

 

42,080

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$

44.07

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Exercised

 

(6,533)

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34.27

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Canceled

 

(22,478)

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$

42.32

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Outstanding at March 31, 2022

 

715,645

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$

6,035

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$

35.00

 

6.58

yrs.

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Vested or expected to vest

 

650,351

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$

5,482

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$

34.99

 

4.31

yrs.

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Exercisable at March 31, 2022

 

503,300

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$

3,554

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$

36.60

 

5.82

yrs.

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