XML 92 R79.htm IDEA: XBRL DOCUMENT v3.22.2.2
Stock-based Compensation Plans (Schedule of Shared-Based Compensation, Performance Units (Details) - $ / shares
 3 Months Ended 12 Months Ended
Nov. 30, 2021
Jan. 27, 2021
Dec. 02, 2020
Feb. 24, 2020
Jan. 28, 2020
Dec. 03, 2019
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period                             62,396      
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity                          
Restricted stock unit activity under the 2006 Plan is summarized below.

Restricted stock unitsWeighted
average
grant date fair value per unit		Weighted
average
remaining
contractual
term (years)		Aggregate
intrinsic
value
  (millions)  
Outstanding at September 30, 2019437,022 $11.31 0.9
Granted301,979 11.55 
Vested(295,241)11.40 $3.4 
Cancelled(35,254)11.48 
Outstanding at September 30, 2020408,506 11.41 0.9
Granted220,795 12.29 
Vested(228,121)11.62 $2.8 
Cancelled(5,083)11.41 
Outstanding at September 30, 2021396,097 11.78 0.8
Granted223,379 13.41 
Vested(251,981)11.81 $2.8 
Cancelled(8,763)11.87 
Outstanding at September 30, 2022358,732 $12.77 0.7
        
Performance Shares [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period                           160,163   61,610    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                           240,412,000,000 103,058,000,000      
Market Based Performance Shares Member                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 230,089 4,187 234,199 7,498 2,763 147,213                        
Dividend yield 1.70% 1.84% 1.77% 1.73% 1.76% 1.87%                        
Risk-free interest rate 0.76% 0.16% 0.21% 1.23% 1.44% 1.53%                        
Expected life (years) 2 years 9 months 29 days 2 years 8 months 1 day 2 years 9 months 29 days 2 years 7 months 6 days 2 years 8 months 1 day 2 years 9 months 29 days                        
Granted, Weighted average grant date fair value per share $ 15.76 $ 14.26 $ 15.39 $ 18.17 $ 16.76 $ 14.94                        
Share-based Payment Arrangement, Tranche One [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                 57,092                  
2017 member [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value                               $ 10.53 $ 12.50 $ 13.26
2017 member [Member] | Share-based Payment Arrangement, Tranche One [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                                   100.00%
Settlement of performance-based restricted stock units, net of shares withheld for taxes                           54,006        
2017 member [Member] | Share-based Payment Arrangement, Tranche One [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                     59,285              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                                 (5,279)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                                 54,006  
2017 member [Member] | Share-based Payment Arrangement, Tranche Two [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                                 135.70%  
Settlement of performance-based restricted stock units, net of shares withheld for taxes                           26,294        
2017 member [Member] | Share-based Payment Arrangement, Tranche Two [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                     59,286              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                               (39,910)    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                               19,376    
2017 member [Member] | Share-based Payment Arrangement, Tranche Three [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                               64.50%    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                           12,501        
2017 member [Member] | Share-based Payment Arrangement, Tranche Three [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                     59,290              
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                             (39,909)      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                             19,381      
January 23, 2017 [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value                                   $ 13.15
January 23, 2017 [Member] | Share-based Payment Arrangement, Tranche One [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                                   100.00%
Settlement of performance-based restricted stock units, net of shares withheld for taxes                           19,012        
January 23, 2017 [Member] | Share-based Payment Arrangement, Tranche One [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                   19,012                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                                 0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                                 19,012  
January 23, 2017 [Member] | Share-based Payment Arrangement, Tranche Two [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                                 135.70%  
Settlement of performance-based restricted stock units, net of shares withheld for taxes                           25,798        
January 23, 2017 [Member] | Share-based Payment Arrangement, Tranche Two [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                   19,011                
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                             0 0    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                             19,011 19,011    
January 23, 2017 [Member] | Share-based Payment Arrangement, Tranche Three [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                               64.50%    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                           12,263        
January 23, 2017 [Member] | Share-based Payment Arrangement, Tranche Three [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                   19,011                
November 28, 2017 [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value                             $ 11.26 $ 10.53 $ 12.50  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                           35,425 52,299      
November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche One [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                                 135.70%  
November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche One [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                               0    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                               57,092    
November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche Two [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                               64.50%    
November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche Two [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                 57,092                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                             (4,793)      
November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche Three [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Performance Factor                             90.90%      
November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche Three [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period                 57,104                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                           (21,679)        
November 27, 2018 [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value                           $ 11.86 $ 11.26 $ 10.53    
November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche One [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                             102,203      
Performance Factor                               64.50%    
November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche One [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period               110,954                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                             (8,751)      
November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche Two [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                           97,772        
November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche Two [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period               110,954                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                           (13,182)        
November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche Three [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                           82,489        
Performance Factor                           116.10% 90.90%      
November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche Three [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period               110,967                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                           (28,478)        
December 3, 2019                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value                           $ 13.81 $ 11.86 $ 11.26    
December 3, 2019 | Share-based Payment Arrangement, Tranche One [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                           67,597        
Performance Factor                             90.90%      
December 3, 2019 | Share-based Payment Arrangement, Tranche One [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period             69,988                      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                           (2,391)        
December 3, 2019 | Share-based Payment Arrangement, Tranche Two [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                           60,375        
Performance Factor                           116.10%        
December 3, 2019 | Share-based Payment Arrangement, Tranche Two [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period             69,989                      
December 3, 2019 | Share-based Payment Arrangement, Tranche Three [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number                           60,374        
Performance Factor                           70.00%        
December 3, 2019 | Share-based Payment Arrangement, Tranche Three [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period             69,988                      
Forecast [Member] | November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche One [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                         77,474          
Forecast [Member] | November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche Two [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                         33,733          
Forecast [Member] | November 28, 2017 [Member] | Share-based Payment Arrangement, Tranche Three [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                         32,202          
Forecast [Member] | November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche One [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                         65,921          
Forecast [Member] | November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche Two [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                         88,875          
Forecast [Member] | November 27, 2018 [Member] | Share-based Payment Arrangement, Tranche Three [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                         95,770          
Forecast [Member] | December 3, 2019 | Share-based Payment Arrangement, Tranche One [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                       61,446            
Forecast [Member] | December 3, 2019 | Share-based Payment Arrangement, Tranche Two [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                       70,096            
Forecast [Member] | December 3, 2019 | Share-based Payment Arrangement, Tranche Two [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                         (9,614)          
Forecast [Member] | December 3, 2019 | Share-based Payment Arrangement, Tranche Three [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Settlement of performance-based restricted stock units, net of shares withheld for taxes                       42,262            
Forecast [Member] | December 3, 2019 | Share-based Payment Arrangement, Tranche Three [Member] | PRSU base units [Member]                                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period                         (9,614)