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Stock-Based Compensation (Tables)
12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of stock option activity
The following table summarizes the stock option activity during the periods indicated:
SharesWeighted-Average Exercise Price
Outstanding at December 31, 2018
12,558 $14.77 
Exercised(3,901)14.77 
Outstanding at December 31, 2019
8,657 14.77 
Exercised(8,248)14.77 
Forfeited or expired(409)14.77 
Outstanding at December 31, 2020
— $— 
Schedule of restricted stock award activity
The following table summarizes the restricted stock award activity for the periods indicated
SharesWeighted-Average Grant Date Fair Value
Nonvested at December 31, 2018
66,033 $17.28 
Vested(43,148)17.07 
Forfeited(2,178)18.32 
Nonvested at December 31, 2019
20,707 17.59 
Vested(20,707)17.59 
Nonvested at December 31, 2020
— $— 
Schedule of assumptions of PRSUs granted
The Company used the following assumptions to estimate the fair value of performance-based restricted share units granted for the periods indicated:
Year Ended December 31,
202120202019
Shares issued14,347 15,200 14,396 
Expected Term in Years2.92.82.8
Weighted-Average Risk Free Interest Rate0.3 %1.1 %2.5 %
Weighted Average Fair Value24.49 23.50 30.06 
Correlation coefficientABA NASDAQ Community Bank IndexABA NASDAQ Community Bank IndexABA NASDAQ Community Bank Index
Range of peer company volatilities
31.4%-136.4%
18.1%-107.6%
19.9%-75.4%
Range of peer company correlation coefficients
34.1%-94.8%
16.1%-90.2%
34.5%-90.7%
Company volatility40.2 %23.2 %23.9 %
Company correlation coefficient90.1 %80.5 %79.9 %
Summary of RSU activity
The following table summarizes the unit activity for the periods indicated:
UnitsWeighted-Average Grant Date Fair Value
Nonvested at December 31, 2018
179,185 $28.94 
Granted126,598 31.89 
Vested(64,173)29.25 
Forfeited(8,070)30.25 
Nonvested at December 31, 2019
233,540 30.41 
Granted200,972 23.61 
Vested(109,853)29.21 
Forfeited(8,543)28.07 
Nonvested at December 31, 2020
316,116 26.57 
Granted147,944 25.70 
Vested(125,377)26.84 
Forfeited(23,669)27.20 
Nonvested at December 31, 2021
315,014 $26.01