Earnings Per Share

3 Months Ended

Mar. 31, 2023

Class A and Class B basic earnings per share and Class B diluted earnings per share are calculated under the two-class method. The two-class method allocates earnings to each class of stock based upon its dividend rights. Class B shares are convertible into Class A shares at a conversion ratio of 2,400 to 1. See Note 10, "Capital Stock".

Class A diluted earnings per share is calculated under the if-converted method, which reflects the conversion of Class B shares to Class A shares. Diluted earnings per share calculations include the dilutive effect of assumed issuance of stock-based awards under compensation plans that have the option to be paid in stock using the treasury stock method.

A reconciliation of the numerators and denominators used in the basic and diluted per-share computations is presented as follows for each class of common stock for the three months ended March 31:



	2023					2022
(dollars in thousands, except per share data)	Allocated net income (numerator)		Weighted shares (denominator)	Per-share amount		Allocated net income (numerator)		Weighted shares (denominator)	Per-share amount
Class A – Basic EPS:
Income available to Class A stockholders	$	85,535	46,188,819	$	1.85	$	68,057	46,188,761	$	1.47
Dilutive effect of stock-based awards	0		7,002	—		0		10,940	—
Assumed conversion of Class B shares	706		6,100,800	—		562		6,100,800	—
Class A – Diluted EPS:
Income available to Class A stockholders on Class A equivalent shares	$	86,241	52,296,621	$	1.65	$	68,619	52,300,501	$	1.31
Class B – Basic and diluted EPS:
Income available to Class B stockholders	$	706	2,542	$	278	$	562	2,542	$	221