Earnings Per Common Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Computation of Earnings Per Common Share

	Three Months Ended
	March 31,
(in thousands, except per share data)	2019		2018
Numerator:
Net income to common shareholders	$	79,164	$	72,475
Net income allocated to participating securities - basic and diluted		1,337		1,366
Net income allocated to common shareholders - basic and diluted	$	77,827	$	71,109
Denominator:
Weighted-average common shares - basic		85,688		85,241
Dilutive potential common shares		112		182
Weighted-average common shares - diluted		85,800		85,423
Earnings per common share:
Basic	$	0.91	$	0.83
Diluted	$	0.91	$	0.83