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Stock-based Compensation (Tables) | 3 Months Ended
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Mar. 31, 2022
Share-Based Payment Arrangement [Abstract] |
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block] |
|  | Number of Stock Options |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Term (in years) |  |  | Aggregate Intrinsic Value |
Outstanding as of December 31, 2021 |  |  | 23,766 |  |  | $ | 9.94 |  |  |  |  |  |  |  |  |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Exercised |  |  | (8,774 | ) |  |  | 9.09 |  |  |  |  |  |  |  |  |
Forfeited/cancelled/expired |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding as of March 31, 2022 |  |  | 14,992 |  |  |  | 10.44 |  |  |  | 0.63 |  |  | $ | 323,303 |
Exercisable as of March 31, 2022 |  |  | 14,992 |  |  | $ | 10.44 |  |  |  | 0.63 |  |  | $ | 323,303 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  | Nonvested Shares |  |  | Weighted- Average Grant Date Fair Value |
Nonvested as of December 31, 2021 |  |  | 82,693 |  |  | $ | 21.78 |
Granted |  |  | 32,522 |  |  |  | 32.71 |
Vested |  |  | (18,742 | ) |  |  | 23.13 |
Forfeited/cancelled/expired |  |  | (68 | ) |  |  | 23.23 |
Nonvested March 31, 2022 |  |  | 96,405 |  |  | $ | 25.20 |
Schedule of Unearned Performance Unit Awards [Table Text Block] |
|  | Units (expected) |  |  | Units (maximum) |  |  | Weighted Average Grant Date Fair Value |
Unearned as of December 31, 2021 |  |  | 209,994 |  |  |  |  |  |  | $ | 16.18 |
Awarded |  |  | 34,874 |  |  |  |  |  |  |  | 32.80 |
Vested shares |  |  | (49,604 | ) |  |  |  |  |  |  | 20.79 |
Unearned as of March 31, 2022 |  |  | 195,264 |  |  |  | 221,541 |  |  | $ | 17.98 |
|  | Units (expected) |  |  | Weighted Average Grant Date Fair Value |
Unearned as of December 31, 2021 |  |  | 136,948 |  |  | $ | 16.52 |
Awarded |  |  | 52,312 |  |  |  | 32.80 |
Vested shares |  |  | (69,584 | ) |  |  | 16.13 |
Unearned as of March 31, 2022 |  |  | 119,676 |  |  | $ | 23.86 |

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