Earnings Per Share

9 Months Ended

Sep. 30, 2018

9.EARNINGS PER SHARE

The calculation of basic earnings per share considers only weighted average outstanding common shares in the computation. The calculation of diluted earnings per share gives effect to all potentially dilutive stock options. The calculation of diluted earnings per share is based upon the weighted average number of common shares outstanding during the period, plus, if dilutive, the assumed exercise of stock options using the treasury stock method. Weighted average shares outstanding for the three and nine months ended September 30, 2018 and 2017 were as follows:



	For the three months				For the nine months
	ended September 30,				ended September 30,
Amounts in thousands	2018		2017		2018		2017
Weighted average common shares, basic		29,425		24,470		29,388		24,464
Dilutive effect of stock options		562		421		598		441
Weighted average common shares, diluted		29,987		24,891		29,986		24,905

The following stock options are anti-dilutive and have not been included in the weighted average shares outstanding calculation:



	For the three months				For the nine months
	ended September 30,				ended September 30,
Amounts in thousands	2018		2017		2018		2017
Stock options		102		—		60		—