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Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands

3 Months Ended

6 Months Ended

Jun. 30, 2018

Jun. 30, 2017

Jun. 30, 2018

Jun. 30, 2017

Earnings per share:

Net earnings

^[1]

$ 2,845

$ 2,383

$ 4,944

$ 4,588

Weighted average common shares outstanding - basic

^[1]

4,141,894

4,064,092

4,124,947

4,063,692

Assumed exercise of stock options

^[1]

18,693

84,092

18,544

83,040

Weighted average common shares outstanding - diluted

^[1]

4,160,587

4,148,184

4,143,491

4,146,732

Net earnings per share: Basic

^[2]

$ 0.69

$ 0.59

$ 1.20

$ 1.13

Net earnings per share: Diluted

^[2]

$ 0.68

$ 0.58

$ 1.19

$ 1.11

[1]	Share and per share values for the periods ended June 30, 2017 have been adjusted to give effect to the 5% stock dividend paid during December 2017.
[2]	Per share amounts for the periods ended June 30, 2017 have been adjusted to give effect to the 5% stock dividend paid during December 2017.

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