Earnings Per Common Share

3 Months Ended

Mar. 31, 2023

9. Earnings Per Common Share

The Company calculates earnings per share using the two-class method. The two-class method allocates net income to each class of common stock and participating security according to common dividends declared and participation rights in undistributed earnings. Participating securities consist of nonvested share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents.

A summary of the information used in the computation of earnings per common share follows.


	Three Months Ended
	March 31,
($ in thousands, except per share data)	2023		2022
Numerator:
Net income to common shareholders	$	126,467	$	123,478
Net income allocated to participating securities - basic and diluted		1,358		1,918
Net income allocated to common shareholders - basic and diluted	$	125,109	$	121,560
Denominator:
Weighted-average common shares - basic		86,018		86,660
Dilutive potential common shares		264		276
Weighted-average common shares - diluted		86,282		86,936
Earnings per common share:
Basic	$	1.45	$	1.40
Diluted	$	1.45	$	1.40

Potential common shares consist of stock options, nonvested performance-based awards, nonvested restricted stock units, and restricted share awards deferred under the Company’s nonqualified deferred compensation plan. These potential common shares do not enter into the calculation of diluted earnings per share if the impact would be antidilutive, i.e., increase earnings per share or reduce a loss per share. Potential common shares totaling 34,157 for the three months ended March 31, 2023, and 231 for the three months ended March 31, 2022, did not enter the calculation of diluted earnings per share as the impact would have been anti-dilutive.