Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Schedule Computing Earnings Per Share

The amounts used in computing earnings per share and the weighted average number of shares of potentially dilutive securities are as follows:

	Three months ended September 30,		Nine months ended September 30,
(in thousands, except market price and earnings per share)	2019	2018	2019	2018
Net income attributable to the Company	$40,009	$27,736	$103,253	$65,300
Weighted average number of shares:
Weighted average number of shares used in calculating basic net income per share	32,306	32,264	32,293	32,247
Effect of dilutive stock-based compensation plans:
Stock options	11	16	12	16
Weighted average number of shares used in calculating diluted net income per share	32,317	32,280	32,305	32,263
Average market price of common stock used for calculation of dilutive shares	$82.99	$72.30	$76.45	$66.01
Net income attributable to the Company per share:
Basic	$1.24	$0.86	$3.20	$2.02
Diluted	$1.24	$0.86	$3.20	$2.02