Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Computation of Earnings Per Common Share

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