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Stock-Based Compensation - Restricted Stock Unit Activity (Details) - Restricted Stock Units
12 Months Ended
Dec. 31, 2021
$ / shares
shares
 Number of Shares  
Outstanding at beginning of period (in shares) | shares 72,817
Granted (in shares) | shares 17,316
Dividend equivalents awarded (in shares) | shares 2,310
Vested (in shares) | shares (33,490)
Forfeited (in shares) | shares (2,738)
Outstanding at end of period (in shares) | shares 56,215
Weighted Average Grant Date Fair Value  
Outstanding at beginning of period (in USD per share) | $ / shares $ 33.33
Granted (in USD per share) | $ / shares 42.02
Dividend equivalents awarded (in USD per share) | $ / shares 37.07
Vested (in USD per share) | $ / shares 33.24
Forfeited (in USD per share) | $ / shares 32.50
Outstanding at end of period (in USD per share) | $ / shares $ 34.74
Weighted average remaining contractual life, Outstanding at end of period 2 years 3 months 14 days