Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

The following table provides the weighted average number of common shares outstanding used in the calculation of the Company's basic and diluted earnings per share:

(In thousands, except per share data)	Year Ended December 31
	2019		2018		2017
Weighted average number of common shares outstanding, basic	53,740		53,598		53,393
Dilutive effect of securities:
Restricted Share Units	75		70		85
Performance Share Units	10		63		110
Purchase Match Units	16		18		23
Weighted average number of common shares outstanding, diluted	53,841		53,749		53,611
Effect of dilutive shares on earnings per share	$	—	$	—	$	(0.01	)