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4. Net Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Reconciliations of the amounts used in the computation of both basic earnings per common share and diluted earnings per common share |
For the three months ended September 30, 2018 |  |  |  |  |  |
|  | Net Earnings (Dollars in thousands) |  | Weighted Average Number of Shares |  | Per Share Amount
Basic earnings per share |  | $ | 3,467 |  |  |  | 5,995,256 |  |  | $ | 0.58 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  | — |  |  |  | 21,445 |  |  |  |  |
Diluted earnings per share |  | $ | 3,467 |  |  |  | 6,016,701 |  |  | $ | 0.57 |
For the nine months ended September 30, 2018 |  |  |  |  |  |
|  | Net Earnings (Dollars in thousands) |  | Weighted Average Number of Shares |  | Per Share Amount
Basic earnings per share |  | $ | 9,946 |  |  |  | 5,995,256 |  |  | $ | 1.66 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  | — |  |  |  | 19,137 |  |  |  |  |
Diluted earnings per share |  | $ | 9,946 |  |  |  | 6,014,393 |  |  | $ | 1.65 |
For the three months ended September 30, 2017 |  |  |  |  |  |
|  | Net Earnings (Dollars in thousands) |  | Weighted Average Number of Shares |  | Per Share Amount
Basic earnings per share |  | $ | 3,242 |  |  |  | 5,995,453 |  |  | $ | 0.54 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  | — |  |  |  | 96,339 |  |  |  |  |
Diluted earnings per share |  | $ | 3,242 |  |  |  | 6,091,792 |  |  | $ | 0.52 |
For the nine months ended September 30, 2017 |  |  |  |  |  |
|  | Net Earnings (Dollars in thousands) |  | Weighted Average Number of Shares |  | Per Share Amount
Basic earnings per share |  | $ | 8,258 |  |  |  | 5,985,051 |  |  | $ | 1.38 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  | — |  |  |  | 94,566 |  |  |  |  |
Diluted earnings per share |  | $ | 8,258 |  |  |  | 6,079,616 |  |  | $ | 1.35 |

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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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