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Earnings Per Common Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2019

Sep. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Sep. 27, 2019

Earnings Per Share [Abstract]

Stock dividend, percent

3.00%

3.00%

3.00%

3.00%

3.00%

Net Income

$ 10,067

$ 9,260

$ 27,735

$ 27,521

Weighted Average Shares - Basic (in shares)

14,955

^[1]

14,864

^[2]

14,927

^[1]

14,825

^[2]

Earnings Per Share - Basic (in dollars per share)

$ 0.67

^[1]

$ 0.62

^[1]

$ 1.86

^[1]

$ 1.85

^[2]

Dilutive Average Shares Attributable to Stock Options (in shares)

36

92

41

89

Weighted Average Shares - Diluted (in shares)

^[2]

14,991

14,956

14,968

14,914

Earnings Per Share - Diluted (in dollars per share)

$ 0.67

^[1]

$ 0.62

^[1]

$ 1.85

^[1]

$ 1.84

^[2]

[1]	Cash dividends paid per share have been adjusted for the September 27, 2019 3% stock dividend.
[2]	2018 Share and Per Share Amounts have been restated for the September 27, 2019 3% stock dividend.

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