Earnings Per Share (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Shares [Abstract]
Basic earnings per share	3,773,739	3,769,201	3,770,983	3,765,372
Effect of dilutive stock awards	10,833	9,331	9,875	8,253
Diluted earnings per share	3,784,572	3,778,532	3,780,858	3,773,625
Per Share Amount [Abstract]
Earnings per share, basic	$ 0.44	$ 0.26	$ 0.86	$ 0.47
Earnings per share, diluted	$ 0.44	$ 0.26	$ 0.86	$ 0.47