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Stock Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block] | Activity under the Company’s options for the year ended December 31, 2020 was as follows:
|  | Number of Stock Options |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value |
Outstanding as of December 31, 2019 |  |  | 73,426 |  |  | $ | 8.19 |  |  |  | 0 |  |  | $ | 0 |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Exercised |  |  | (35,413) |  |  |  | 7.28 |  |  |  |  |  |  |  |  |
Forfeited/cancelled/expired |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Outstanding as of December 31, 2020 |  |  | 38,013 |  |  |  | 9.04 |  |  |  | 1.2 |  |  | $ | 409,000 |
Exercisable as of December 31, 2020 |  |  | 38,013 |  |  | $ | 9.04 |  |  |  | 1.2 |  |  | $ | 409,000 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] | Activity under the Company’s restricted shares for year ended December 31, 2020 was as follows:
|  | Nonvested Shares |  |  | Weighted- Average Grant Date Fair Value |
Nonvested as of December 31, 2019 |  |  | 75,351 |  |  | $ | 21.61 |
Granted |  |  | 90,200 |  |  |  | 17.11 |
Vested |  |  | (52,014) |  |  |  | 21.32 |
Forfeited/cancelled/expired |  |  | (423) |  |  |  | 23.65 |
Nonvested December 31, 2020 |  |  | 113,114 |  |  | $ | 18.15 |
Schedule of Unearned Performance Unit Awards [Table Text Block] | A summary of the status of unearned performance unit awards and the change during the period is presented in the table below:
|  | Units (expected) |  |  | Units (maximum) |  |  | Weighted Average Grant Date Fair Value |
Unearned as of December 31, 2019 |  |  | 90,097 |  |  |  | 0 |  |  | $ | 23.85 |
Awarded |  |  | 82,579 |  |  |  |  |  |  |  | 10.77 |
Change in estimate |  |  | 12,297 |  |  |  |  |  |  |  | 29.61 |
Vested shares |  |  | (37,337) |  |  |  |  |  |  |  | 22.75 |
Unearned as of December 31, 2020 |  |  | 147,636 |  |  |  | 206,744 |  |  | $ | 17.29 |
Schedule of Unearned Restricted Unit Awards [Table Text Block] | A summary of the status of unearned restricted stock units and the changes in restricted stock units during the period is presented in the table below:
|  | Units (expected) |  |  | Weighted Average Grant Date Fair Value |
Unearned as of December 31, 2019 |  |  | 73,069 |  |  | $ | 23.62 |
Awarded |  |  | 123,870 |  |  |  | 10.77 |
Vested shares |  |  | (27,626) |  |  |  | 24.53 |
Unearned as of December 31, 2020 |  |  | 169,313 |  |  | $ | 14.07 |

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