Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2018

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)	2018	2017	2018	2017
Net income attributable to the Company	$28,215	$15,269	$68,825	$27,225
Weighted average number of shares:
Weighted average number of shares used in
calculating basic net income per share	32,264	32,187	32,247	32,160
Effect of dilutive stock-based compensation plans:
Stock options	16	27	16	33
Weighted average number of shares used in
calculating diluted net income per share	32,280	32,214	32,263	32,193
Average market price of common stock used
for calculation of dilutive shares	$72.30	$53.49	$66.01	$49.49
Net income attributable to the Company per share:
Basic	$0.87	$0.47	$2.13	$0.85
Diluted	$0.87	$0.47	$2.13	$0.85