Net Income Per Common Share (Tables)

12 Months Ended

Dec. 31, 2023

Earnings Per Share [Abstract]

Net Income Per Common Share

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

	Year Ended December 31
	2023		2022		2021
	(thousands, except per-share data)
Net income	$	483,656	$	857,658	$	712,486
Weighted average common shares outstanding during the period (for basic calculation)	39,649		39,526		39,420
Dilutive effect of other potential common shares	252		246		226
Weighted average common shares and potential common shares (for diluted calculation)	39,901		39,772		39,646
Net income per common share - Basic	$	12.20	$	21.70	$	18.07
Net income per common share - Diluted	$	12.12	$	21.56	$	17.97