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Stock-Based Compensation (Tables) | 12 Months Ended
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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:
| Shares |  | Weighted-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
| Shares |  | Weighted-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,
| 2021 |  | 2020 |  | 2019
Shares issued | 14,347 |  |  | 15,200 |  |  | 14,396 |
Expected Term in Years | 2.9 |  | 2.8 |  | 2.8
Weighted-Average Risk Free Interest Rate | 0.3 | % |  | 1.1 | % |  | 2.5 | %
Weighted Average Fair Value | 24.49 |  |  | 23.50 |  |  | 30.06 |
Correlation coefficient | ABA NASDAQ Community Bank Index |  | ABA NASDAQ Community Bank Index |  | ABA 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 volatility | 40.2 | % |  | 23.2 | % |  | 23.9 | %
Company correlation coefficient | 90.1 | % |  | 80.5 | % |  | 79.9 | %
Summary of RSU activity | The following table summarizes the unit activity for the periods indicated:
| Units |  | Weighted-Average Grant Date Fair Value
Nonvested at December 31, 2018 | 179,185 |  |  | $ | 28.94 |
Granted | 126,598 |  |  | 31.89 |
Vested | (64,173) |  |  | 29.25 |
Forfeited | (8,070) |  |  | 30.25 |
Nonvested at December 31, 2019 | 233,540 |  |  | 30.41 |
Granted | 200,972 |  |  | 23.61 |
Vested | (109,853) |  |  | 29.21 |
Forfeited | (8,543) |  |  | 28.07 |
Nonvested at December 31, 2020 | 316,116 |  |  | 26.57 |
Granted | 147,944 |  |  | 25.70 |
Vested | (125,377) |  |  | 26.84 |
Forfeited | (23,669) |  |  | 27.20 |
Nonvested at December 31, 2021 | 315,014 |  |  | $ | 26.01 |

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- Definition Schedule of Share-based Payment Award, Equity Instruments Other than Options, Valuation Assumptions [Table Text Block] + References No definition available. + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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