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Stock Plans (Tables) | 3 Months Ended
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Mar. 31, 2020
Stock Plans [Abstract] |
Summary of Weighted-Average Fair-Value and Vesting of Restricted Stock Grants | ﻿
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﻿ | March 31, 2020 |  | March 31, 2019
﻿ |  |  | Weighted- |  |  |  | Weighted-
﻿ |  |  | average |  |  |  | average
﻿ | Shares |  | grant date |  | Shares |  | grant date
﻿ | granted |  | fair value |  | granted |  | fair value
﻿ |  |  |  |  |  |  |  |  |
﻿Director plan | 6,000 | (3) | $ | 56.63 |  | 5,600 | (2) | $ | 54.69
﻿Omnibus plan | 11,761 | (3) |  | 55.06 |  | 7,251 | (2) |  | 54.69
﻿Omnibus plan | 50 | (1) |  | 57.62 |  | 50 | (1) |  | 58.08
﻿Total | 17,811 |  | $ | 55.59 |  | 12,901 |  | $ | 54.70
(1) Vest after 1 year (2) Vest after 3 years – 33% each year (3) Vest fully after 3 years
Schedule of Non-Vested Restricted Stock Units Activity |
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﻿ | 2012 Stock incentive plans
﻿ | Director |  | Omnibus |  | Total |  |  | Weighted- average grant date fair value
﻿Non-vested balance at December 31, 2019 | 11,200 |  | 15,961 |  | 27,161 |  | $ | 49.48
﻿Granted | 6,000 |  | 11,811 |  | 17,811 |  |  | 55.59
﻿Vested | (4,664) |  | (7,597) |  | (12,261) |  |  | 46.94
﻿Non-vested balance at March 31, 2020 | 12,536 |  | 20,175 |  | 32,711 |  | $ | 53.76
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Schedule of SSARs Activity | ﻿
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﻿ |  | Awards |  |  | Weighted-average grant date fair value |  | Weighted-average remaining contractual term (years)
﻿Outstanding December 31, 2019 |  | 97,264 |  | $ | 9.47 |  | 7.5
﻿Granted |  | - |  |  | - |  |
﻿Exercised |  | - |  |  | - |  |
﻿Forfeited |  | - |  |  | - |  |
﻿Outstanding March 31, 2020 |  | 97,264 |  | $ | 9.47 |  | 7.2
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Of the SSARs outstanding at March 31, 2020, 76,897 vested and were exercisable. SSARs vest over a three-year period – 33% per year.
Schedule of Compensation Cost for Share-Based Payment Arrangements, Allocation of Share-Based Compensation Costs by Plan |
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﻿ | Three months ended March 31,
﻿(dollars in thousands) | 2020 |  |  | 2019
﻿Stock-based compensation expense: |  |  |  |  |
﻿Director stock incentive plan | $ | 78 |  | $ | 59
﻿Omnibus stock incentive plan |  | 170 |  |  | 148
﻿Employee stock purchase plan |  | 27 |  |  | 107
﻿Total stock-based compensation expense | $ | 275 |  | $ | 314
In addition, during the three months ended March 31, 2020, the Company reversed accruals of ($32 thousand) in stock-based compensation expense for restricted stock and SSARs awarded under the Omnibus Plan. During the three months ended March 31, 2019, the Company reversed accruals of ($35 thousand) in stock-based compensation expense.
Schedule of Unrecognized Compensation Cost, Non-Vested Awards |
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﻿ | As of
﻿(dollars in thousands) | March 31, 2020
﻿Unrecognized stock-based compensation expense: |  |
﻿Director plan | $ | 626
﻿Omnibus plan |  | 1,262
﻿Total unrecognized stock-based compensation expense | $ | 1,888
The unrecognized stock-based compensation expense as of March 31, 2020 will be recognized ratably over the periods ended January 2023 and January 2023 for the Director Plan and the Omnibus Plan, respectively.

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