Earnings Per Share

6 Months Ended

Jun. 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 six months ended June 30, 2018 and 2017 were as follows:



	For the three months				For the six months
	ended June 30,				ended June 30,
Amounts in thousands	2018		2017		2018		2017
Weighted average common shares, basic		29,376		24,466		29,369		24,460
Dilutive effect of stock options		598		496		615		451
Weighted average common shares, diluted		29,974		24,962		29,984		24,911

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 six months
	ended June 30,				ended June 30,
Amounts in thousands	2018		2017		2018		2017
Stock options		79		35		40		35