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Earnings Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  |  | Three months ended September 30 , |  |  | Nine months ended September 30 , |
|  |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
|  |  | (In thousands, except per share data) |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  | $ | 2,329 |  |  |  |  | $ | 1,551 |  |  |  |  | $ | 5,840 |  |  |  |  | $ | 4,288 |  |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average common shares outstanding (basic) |  |  |  |  | 17,924 |  |  |  |  |  | 18,380 |  |  |  |  |  | 18,013 |  |  |  |  |  | 18,590 |  |
Effect of stock options |  |  |  |  | 112 |  |  |  |  |  | 101 |  |  |  |  |  | 104 |  |  |  |  |  | 99 |  |
Weighted average common shares outstanding (diluted) |  |  |  |  | 18,036 |  |  |  |  |  | 18,481 |  |  |  |  |  | 18,117 |  |  |  |  |  | 18,689 |  |
Earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  |  | $ | 0.13 |  |  |  |  | $ | 0.08 |  |  |  |  | $ | 0.32 |  |  |  |  | $ | 0.23 |  |
Diluted |  |  |  |  | 0.13 |  |  |  |  |  | 0.08 |  |  |  |  |  | 0.32 |  |  |  |  |  | 0.23 |  |

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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