Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

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

(in thousands, except market price and earnings per share)	2020		2019		2018
Net income attributable to the Company	$	98,589	$	132,398	$	82,891
Weighted average number of shares:
Weighted average number of shares used in calculating basic net income per share	32,329		32,296		32,252
Effect of dilutive stock-based compensation plans:
Stock options	7		12		15
Long-term incentive plan	20		14		28
Weighted average number of shares used in calculating diluted net income per share	32,356		32,322		32,295
Average market price of common stock used for calculation of dilutive shares	$	58.56	$	78.13	$	66.95
Net income per share:
Basic	$	3.05	$	4.10	$	2.57
Diluted	$	3.05	$	4.10	$	2.57