Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Computation Of Basic And Diluted Earnings (Loss) Per Common Share

The following is a computation of basic and diluted earnings per common share for the three and nine months ended September 30, 2018 and 2017: 

(in thousands, except per share data)	Three Months Ended				Nine Months Ended
	September 30, 2018		September 30, 2017		September 30, 2018		September 30, 2017
NUMERATORS:
Net income	$	90,981	$	63,807	$	235,952	$	167,062
Less:
Dividends and undistributed earnings allocated to participating securities (1)	5		14		15		40
Net earnings available to common shareholders	$	90,976	$	63,793	$	235,937	$	167,022
DENOMINATORS:
Weighted average number of common shares outstanding - basic	220,224		220,215		220,292		220,270
Effect of potentially dilutive common shares (2)	396		540		459		523
Weighted average number of common shares outstanding - diluted	220,620		220,755		220,751		220,793
EARNINGS PER COMMON SHARE:
Basic	$	0.41	$	0.29	$	1.07	$	0.76
Diluted	$	0.41	$	0.29	$	1.07	$	0.76

(1) Represents dividends paid and undistributed earnings allocated to certain nonvested restricted stock awards. 

(2) Represents the effect of the assumed exercise of stock options, vesting of non-participating restricted shares, and vesting of restricted stock units, based on the treasury stock method.