Per Share Data (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Share

The computation of basic and diluted earnings per share is summarized below:

	For the Three Months Ended June 30,				For the Six Months Ended June 30,
	2018		2017		2018		2017
Weighted average number of common shares outstanding		7,107,245		7,141,240		7,109,782		7,163,493
Effect of dilutive stock options		—		332		—		493
Weighted average number of common shares and dilutive    potential common shares used in computing diluted net    income per common share		7,107,245		7,141,572		7,109,782		7,163,986