Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Computation of Earnings Per Common Share

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(in thousands, except per share data)	2019		2018		2019		2018
Numerator:
Net income to common shareholders	$	67,807	$	83,878	$	235,248	$	227,530
Net income allocated to participating securities - basic and diluted		1,141		1,544		3,980		4,238
Net income allocated to common shareholders - basic and diluted	$	66,666	$	82,334	$	231,268	$	223,292
Denominator:
Weighted-average common shares - basic		86,377		85,348	$	85,934	$	85,298
Dilutive potential common shares		85		191		76		184
Weighted-average common shares - diluted		86,462		85,539	$	86,010	$	85,482
Earnings per common share:
Basic	$	0.77	$	0.96	$	2.69	$	2.62
Diluted	$	0.77	$	0.96	$	2.69	$	2.61