Earnings Per Share

9 Months Ended

Sep. 30, 2020

10.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, 2020 and 2019 were as follows:



	For the three months				For the nine months
	ended September 30,				ended September 30,
Amounts in thousands	2020		2019		2020		2019
Weighted average common shares, basic		29,576		29,453		29,553		29,444
Dilutive effect of stock options		133		726		—		690
Weighted average common shares, diluted		29,709		30,179		29,553		30,134

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	2020		2019		2020		2019
Stock options		1,415		755		1,425		690