Earnings per Share

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Earnings per Share

11. EARNINGS PER SHARE

We compute basic earnings per common share by dividing net income attributable to Core Laboratories N.V. by the weighted average number of common shares outstanding during the period. Diluted earnings per common and potential common shares include additional shares in the weighted average share calculations associated with the incremental effect of dilutive restricted stock awards and contingently issuable shares, as determined using the treasury stock method. The following table summarizes the calculation of weighted average common shares outstanding used in the computation of diluted earnings per share (in thousands):

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Weighted average basic common shares      outstanding		44,371		44,216		44,349		44,199
Effect of dilutive securities:
Performance shares		4		221		111		269
Restricted stock		341		154		394		145
Weighted average diluted common and       potential common shares outstanding		44,716		44,591		44,854		44,613