Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of computation of basic and diluted earnings per common share

The following table sets forth the computation of basic and diluted earnings per common share:

Year ended December 31 (In thousands, except share data)	2019		2018		2017
Numerator:
Net income	$	102,700	$	110,387	$	84,242
Denominator:
Weighted-average common shares outstanding	16,234,342		15,488,982		15,295,573
Effect of dilutive PBRSUs and TBRSUs	95,114		122,507		94,779
Weighted-average common shares outstanding adjusted for the effect of dilutive PBRSUs and TBRSUs	16,329,456		15,611,489		15,390,352
Earnings per common share:
Basic earnings per common share	$	6.33	$	7.13	$	5.51
Diluted earnings per common share	$	6.29	$	7.07	$	5.47