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Earnings per Share

6 Months Ended

Jun. 30, 2018

(6) Earnings per Share. The following details the computations of the basic and diluted earnings per common share (in thousands, except per share amounts):

	Three Months ended				Six Months ended
	June 30,				June 30,
	2018		2017		2018		2017
Weighted average common shares
outstanding during the period
- shares used for basic
earnings per common share		10,033		9,965		10,024		9,948

Common shares issuable under
share based payment plans
which are potentially dilutive		76		73		75		71

Common shares used for diluted
earnings per common share		10,109		10,038		10,099		10,019

Net income attributable to the Company	$	119,982		1,713		121,542		3,156

Basic earnings per common share:
Basic	$	11.96		0.17		12.13		0.32
Diluted	$	11.87		0.17		12.04		0.32

For the three and six months ended June 30, 2018, no shares attributable to outstanding stock options were excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive. For the three and six months ended June 30, 2017, 13,610 and 22,422 shares attributable to outstanding stock options were excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive.