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Share-Based Payments (Tables) | 12 Months Ended
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Dec. 31, 2020
Share-based Payment Arrangement [Abstract] |
Nonvested Restricted Stock Shares Activity [Table Text Block] | The following table summarizes the restricted stock award activity, annually, for the year ended December 31, 2020, 2019 and 2018:
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding, January 1 |  |  | 559,307 |  |  | $ | 16.00 |  |  |  | 295,078 |  |  | $ | 24.10 |  |  |  | 98,121 |  |  | $ | 41.20 |
Granted |  |  | 70,422 |  |  |  | 10.30 |  |  |  | 338,946 |  |  |  | 10.70 |  |  |  | 216,437 |  |  |  | 18.80 |
Vested |  |  | (69,442 | ) |  |  | 21.76 |  |  |  | (69,247 | ) |  |  | 24.90 |  |  |  | (19,480 | ) |  |  | 51.40 |
Forfeited |  |  | (52,420 | ) |  |  | 32.20 |  |  |  | (5,470 | ) |  |  | 14.70 |  |  |  | — |  |  |  | — |
Outstanding, December 31 |  |  | 507,867 |  |  |  | 12.73 |  |  |  | 559,307 |  |  |  | 16.00 |  |  |  | 295,078 |  |  |  | 24.10 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] | The following table summarizes the RSU award activity, annually for the year ended December 31, 2020, 2019 and 2018:
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |  |  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding, January 1 |  |  | 102,718 |  |  | $ | 23.42 |  |  |  | 105,217 |  |  | $ | 37.20 |  |  |  | 95,920 |  |  | $ | 46.80 |
Granted |  |  | 100,200 |  |  |  | 3.89 |  |  |  | 133,431 |  |  |  | 7.70 |  |  |  | 35,714 |  |  |  | 19.60 |
Vested |  |  | (41,640 | ) |  |  | 16.64 |  |  |  | (16,149 | ) |  |  | 38.00 |  |  |  | (12,529 | ) |  |  | 51.50 |
Forfeited |  |  | (29,761 | ) |  |  | 42.83 |  |  |  | (119,781 | ) |  |  | 16.00 |  |  |  | (13,888 | ) |  |  | 45.60 |
Outstanding, December 31 |  |  | 131,517 |  |  |  | 6.32 |  |  |  | 102,718 |  |  |  | 23.42 |  |  |  | 105,217 |  |  |  | 37.20 |
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] | The following table summarizes the total share-based compensation expense and related tax benefits recognized (in thousands):
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |  |  | 2018 |
Share-based compensation expense |  | $ | 2,303 |  |  | $ | 2,868 |  |  | $ | 2,434 |

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + 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 (h)(1) -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 S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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