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Incentive Plan - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares, assumed in acquisition (in shares) 0 0 491,248
Weighted average exercise price, assumed in acquisition (in dollars per share) $ 0 $ 0 $ 21.92
Compensation cost related to non-vested awards not yet recognized $ 12,500    
Aggregate intrinsic value for stock options outstanding 3,500    
Aggregate intrinsic value for stock options exercisable $ 3,400    
Equity Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock incentive plan vesting rate (percent) 20.00%    
Award vesting period (years) 3 years    
Stock incentive plan expiration period (years) 10 years    
Expense for stock option grants $ 1,500 $ 973 $ 1,000
Vesting period of compensation cost related to non-vested awards 3 years 3 months    
Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expense for stock option grants $ 2,800 $ 2,900 $ 2,000
Employee Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (years) 5 years    
2020 Stock Incentive Plan | Equity Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock incentive plan, number of additional shares authorized (in shares) 2,000,000    
Stock incentive plan remaining options or awards (in shares) 969,294    
2020 Stock Incentive Plan | Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock incentive plan, number of additional shares authorized (in shares) 800,000    
Stock incentive plan remaining options or awards (in shares) 387,718    
2011 Stock Incentive Plan | Equity Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock incentive plan, number of additional shares authorized (in shares) 4,000,000    
Stock incentive plan remaining options or awards (in shares) 47,690    
2011 Stock Incentive Plan | Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock incentive plan, number of additional shares authorized (in shares) 1,600,000    
Stock incentive plan remaining options or awards (in shares) 19,076    
Tranche One | Equity Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock incentive plan vesting rate (percent) 20.00%    
Sun Bancorp, Inc.      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares, assumed in acquisition (in shares)     491,248
Weighted average exercise price, assumed in acquisition (in dollars per share)     $ 21.92