Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Basic and Diluted Shares of Consolidated Condensed Statements of Income

The following summarizes the Common Stock included in the basic and diluted shares, as disclosed on the face of the consolidated condensed statements of income:

	Three Months Ended March 31,
	2018		2017
Weighted average number of shares for calculation of basic EPS		36,766,411		36,619,825
Stock options under equity incentive plans		106,996		119,457
Weighted average number of shares for calculation of diluted EPS		36,873,407		36,739,282

Common Stock Issuable upon Exercise of Certain Stock Options

The accompanying table represents Common Stock issuable upon the exercise of certain stock options that have been excluded from the diluted earnings calculation because the effect of their inclusion would be anti-dilutive.

	Three Months Ended March 31,
	2018		2017
Stock options outstanding for equity incentive plans		1,914,150		1,859,618