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Equity - Schedule of SARs and Non-Vested Restricted Stock Outstanding (Details) - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share) $ 88.68   $ 82.76  
Outstanding, SARs (in shares) 130,409      
Exercisable, SARs (in shares) 72,106      
Vested or Expected to Vest, SARs (in shares) 130,409      
Weighted-average grant-date fair value (in dollars per share) $ 78.55 $ 71.76 $ 75.81 $ 60.98
Outstanding, Non-vested Restricted Stock (in shares) 103,891 83,956 62,597 80,153
Expected to Vest, Non-vested Restricted Stock (in shares) 103,891      
Minimum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share)   $ 72.26    
Maximum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share)   $ 75.16    
$10.00 - $24.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share) $ 10.00      
SARs exercise price, upper range limit (in dollars per share) $ 24.99      
Outstanding, SARs (in shares) 3,000      
Outstanding, Weighted-Average Remaining Contractual Life 2 months 12 days      
Exercisable, SARs (in shares) 3,000      
Exercisable, Weighted-Average Remaining Contractual Life 2 months 12 days      
Vested or Expected to Vest, SARs (in shares) 3,000      
Vested or Expected to Vest, Weighted-Average Remaining Contractual Life 2 months 12 days      
25.00 - 39.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share) $ 25.00      
SARs exercise price, upper range limit (in dollars per share) $ 39.99      
Outstanding, SARs (in shares) 37,037      
Outstanding, Weighted-Average Remaining Contractual Life 2 years 8 months 12 days      
Exercisable, SARs (in shares) 37,037      
Exercisable, Weighted-Average Remaining Contractual Life 2 years 8 months 12 days      
Vested or Expected to Vest, SARs (in shares) 37,037      
Vested or Expected to Vest, Weighted-Average Remaining Contractual Life 2 years 8 months 12 days      
40.00 - 54.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share) $ 40.00      
SARs exercise price, upper range limit (in dollars per share) $ 54.99      
Outstanding, SARs (in shares) 0      
Outstanding, Weighted-Average Remaining Contractual Life 0 years      
Exercisable, SARs (in shares) 0      
Exercisable, Weighted-Average Remaining Contractual Life 0 years      
Vested or Expected to Vest, SARs (in shares) 0      
Vested or Expected to Vest, Weighted-Average Remaining Contractual Life 0 years      
55.00 - 69.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share) $ 55.00      
SARs exercise price, upper range limit (in dollars per share) $ 69.99      
Outstanding, SARs (in shares) 3,381      
Outstanding, Weighted-Average Remaining Contractual Life 5 years 3 months 18 days      
Exercisable, SARs (in shares) 3,381      
Exercisable, Weighted-Average Remaining Contractual Life 5 years 3 months 18 days      
Vested or Expected to Vest, SARs (in shares) 3,381      
Vested or Expected to Vest, Weighted-Average Remaining Contractual Life 5 years 3 months 18 days      
70.00 - 84.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share) $ 70.00      
SARs exercise price, upper range limit (in dollars per share) $ 84.99      
Outstanding, SARs (in shares) 52,458      
Outstanding, Weighted-Average Remaining Contractual Life 7 years 10 months 24 days      
Exercisable, SARs (in shares) 22,730      
Exercisable, Weighted-Average Remaining Contractual Life 7 years 8 months 12 days      
Vested or Expected to Vest, SARs (in shares) 52,458      
Vested or Expected to Vest, Weighted-Average Remaining Contractual Life 7 years 10 months 24 days      
85.00 - 99.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
SARs exercise price, lower range limit (in dollars per share) $ 85.00      
SARs exercise price, upper range limit (in dollars per share) $ 99.99      
Outstanding, SARs (in shares) 34,533      
Outstanding, Weighted-Average Remaining Contractual Life 8 years 8 months 12 days      
Exercisable, SARs (in shares) 5,958      
Exercisable, Weighted-Average Remaining Contractual Life 6 years 3 months 18 days      
Vested or Expected to Vest, SARs (in shares) 34,533      
Vested or Expected to Vest, Weighted-Average Remaining Contractual Life 8 years 8 months 12 days      
$50.00 - $64.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Outstanding, Non-vested Restricted Stock (in shares) 18,580      
Outstanding, Weighted-Average Remaining Contractual Life 1 year 3 months 18 days      
Expected to Vest, Non-vested Restricted Stock (in shares) 18,580      
Expected to Vest, Weighted-Average Remaining Contractual Life 1 year 3 months 18 days      
$50.00 - $64.99 | Minimum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Weighted-average grant-date fair value (in dollars per share) $ 50.00      
$50.00 - $64.99 | Maximum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Weighted-average grant-date fair value (in dollars per share) $ 64.99      
65.00 - 79.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Outstanding, Non-vested Restricted Stock (in shares) 25,314      
Outstanding, Weighted-Average Remaining Contractual Life 10 months 24 days      
Expected to Vest, Non-vested Restricted Stock (in shares) 25,314      
Expected to Vest, Weighted-Average Remaining Contractual Life 10 months 24 days      
65.00 - 79.99 | Minimum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Weighted-average grant-date fair value (in dollars per share) $ 65.00      
65.00 - 79.99 | Maximum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Weighted-average grant-date fair value (in dollars per share) $ 79.99      
80.00 - 94.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Outstanding, Non-vested Restricted Stock (in shares) 58,872      
Outstanding, Weighted-Average Remaining Contractual Life 1 year 8 months 12 days      
Expected to Vest, Non-vested Restricted Stock (in shares) 58,872      
Expected to Vest, Weighted-Average Remaining Contractual Life 1 year 8 months 12 days      
80.00 - 94.99 | Minimum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Weighted-average grant-date fair value (in dollars per share) $ 80.00      
80.00 - 94.99 | Maximum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Weighted-average grant-date fair value (in dollars per share) $ 94.99      
95.00-109.99        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Outstanding, Non-vested Restricted Stock (in shares) 1,125      
Outstanding, Weighted-Average Remaining Contractual Life 1 year 6 months      
Expected to Vest, Non-vested Restricted Stock (in shares) 1,125      
Expected to Vest, Weighted-Average Remaining Contractual Life 1 year 6 months      
95.00-109.99 | Minimum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Weighted-average grant-date fair value (in dollars per share) $ 95.00      
95.00-109.99 | Maximum        
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]        
Weighted-average grant-date fair value (in dollars per share) $ 109.99