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Stock Based Compensation - Schedule of Stock Options Valuation Assumptions (Details) - Employee Stock Option - $ / shares
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Expiration period 10 years          
Award vesting period 3 years          
Book value target (in dollars per share)   $ 11.52 $ 10.79 $ 9.97 $ 10.14 $ 8.96
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]            
Historical volatility   27.60%        
Risk-free rate   1.51%        
Dividend yield   2.20%        
Expected term (years)   7 years        
RSU’s and restricted stock vesting - first tranche            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period 3 years          
Award vesting rights, percentage 33.33%          
RSU’s and restricted stock vesting - second tranche            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period 4 years          
Award vesting rights, percentage 33.33%          
RSU’s and restricted stock vesting - third tranche            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period 5 years          
Award vesting rights, percentage 33.33%