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Stock Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2019
Stock Based Compensation [Abstract] |
Schedule Of Share-based Compensation, Stock Options, Activity | ﻿
﻿ |  |  |  |  |  |  |
﻿(Dollars in thousands except share and per share data) |  |  |  |  |  |  |
﻿ | ESPP |  | Weighted Average |  | Aggregate
﻿ | Options |  | Price Per Share |  | Intrinsic Value
﻿Balance Outstanding at December 31, 2017 | 17,837 |  | $ | 29.95 |  | $ | 132
﻿Granted | 19,790 |  |  | 32.73 |  |  |
﻿Exercised | (3,257) |  |  | 30.54 |  |  |
﻿Expired | (15,992) |  |  | 30.07 |  |  |
﻿Balance Outstanding at December 31, 2018 | 18,378 |  | $ | 32.73 |  | $ | -
﻿Granted | 19,644 |  |  | 36.21 |  |  |
﻿Exercised | (2,270) |  |  | 32.75 |  |  |
﻿Expired | (16,641) |  |  | 32.84 |  |  |
﻿Balance Outstanding at December 31, 2019 | 19,111 |  | $ | 36.21 |  | $ | 47
﻿ |  |  |  |  |  |  |
﻿Shares available for future grants at December 31, 2019 | 193,281 |  |  |  |  |  |
﻿ ﻿
﻿ |  |  |  |  |  |  |
﻿ | ISOP |  | Weighted Average |  | Aggregate
﻿ | Options |  | Price Per Share |  | Intrinsic Value
﻿Balance Outstanding at December 31, 2017 | 85,225 |  | $ | 24.75 |  | $ | 1,075
﻿Granted | 34,054 |  |  | 34.10 |  |  |
﻿Exercised | (12,268) |  |  | 21.55 |  |  |
﻿Forfeited | (3,000) |  |  | 23.77 |  |  |
﻿Balance Outstanding at December 31, 2018 | 104,011 |  | $ | 28.22 |  | $ | 341
﻿Granted | — |  |  | — |  |  |
﻿Exercised | (8,482) |  |  | 22.82 |  |  |
﻿Forfeited | (2,550) |  |  | 34.10 |  |  |
﻿Balance Outstanding at December 31, 2019 | 92,979 |  | $ | 28.55 |  | $ | 943
﻿ |  |  |  |  |  |  |
﻿Shares available for future grants at December 31, 2019 | 307,021 |  |  |  |  |  |
﻿
Share-based Compensation Arrangement By Share-based Payment Award, Options, Vested And Expected To Vest, Outstanding And Exercisable |
﻿ |  |  |  |  |  |  |  |  |  |
﻿ |  | Options |  |  |  |  |  |  |  | Weighted
﻿ |  | Outstanding |  |  | Exercise Price or |  | Weighted Average |  | Average Remaining
﻿Stock Option Plan |  | and Exercisable |  |  | Price Range |  | Exercise Price |  | Life (years)
﻿Employee Stock Purchase Plan |  | 19,111 |  | $ | 36.21 |  | $ | 36.21 |  | 0.5
﻿ |  |  |  |  |  |  |  |  |  |
﻿Incentive Stock Option Plan |  | 31,225 |  |  | 21.27 - 22.05 |  |  | 21.54 |  | 5.8
﻿Incentive Stock Option Plan |  | 30,250 |  |  | 30.00 |  |  | 30.00 |  | 7.2
﻿Incentive Stock Option Plan |  | 31,504 |  |  | 34.10 |  |  | 34.10 |  | 8.2
﻿ISOP Total/Average |  | 92,979 |  |  |  |  | $ | 28.55 |  | 7.0
﻿
Valuation Assumptions Using Black-Scholes Method |
﻿ |  |  |  |  |  |
﻿ |  | 2019 |  | 2018
﻿Incentive Stock Option Plan |  |  |  |  |  |
﻿Options granted |  |  | — |  |  | 34,054
﻿Risk-free interest rate |  |  | — |  |  | 2.66%
﻿Expected volatility of the Corporation's stock |  |  | — |  |  | 19.51%
﻿Expected dividend yield |  |  | — |  |  | 2.49%
﻿Expected life (in years) |  |  | — |  |  | 5.25
﻿Weighted average fair value of options granted |  | $ | — |  | $ | 5.42
﻿ |  |  |  |  |  |
﻿(Dollars in thousands) |  |  |  |  |  |
﻿Compensation expense included in net income |  |  |  |  |  |
﻿ESPP |  | $ | — |  | $ | —
﻿ISOP |  |  | — |  |  | 185
﻿Total compensation expense included in net income |  | $ | — |  | $ | 185
﻿

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