Common Stock and Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Common Stock and Earnings Per Share [Abstract]

Shares Used in Computing Basic and Diluted Net Income per Share

Net income of $2,594 and $2,581 for the three months ended March 31, 2018 and 2017, respectively, is used to calculate both basic and diluted earnings per share.  Basic earnings per share is based on the weighted average number of common shares outstanding.  Diluted earnings per share is based on the weighted average number of common shares outstanding plus potentially dilutive shares.  The dilutive effect of employee stock-based compensation is included in the computation of diluted earnings per share and is calculated using the treasury stock method and expected proceeds upon exercise or issuance of the stock-based compensation.  The following table summarizes the shares used in computing basic and diluted earnings per share:

	Three Months Ended March 31
	2018		2017
Weighted average common shares, basic		12,876,514		12,851,505
Effect of dilutive securities:
Employee stock-based compensation		110		18
Weighted average common shares, diluted		12,876,624		12,851,523