Earnings Per Common Share (Tables)

9 Months Ended

Sep. 30, 2015

Earnings Per Share [Abstract]

Calculations for basic and diluted earnings per common share

	Three Months Ended September 30,						Nine Months Ended September 30,
	2015			2014			2015			2014
	(In Thousands, except per share data)
Net income	$	49,438		$	50,207		$	145,510		$	141,771
Preferred stock dividends	(2,184		)	(1,255		)	(4,957		)	(3,777		)
Net income available to common equity	$	47,254		$	48,952		$	140,553		$	137,994
Common shareholder dividends	(14,927		)	(13,983		)	(45,149		)	(42,864		)
Dividends on unvested share-based payment awards	(164		)	(140		)	(450		)	(435		)
Undistributed earnings	$	32,163		$	34,829		$	94,954		$	94,695
Undistributed earnings allocated to common shareholders	$	31,813		$	34,481		$	93,961		$	93,862
Undistributed earnings allocated to unvested share-based payment awards	350			348			993			833
Undistributed earnings	$	32,163		$	34,829		$	94,954		$	94,695
Basic
Distributed earnings to common shareholders	$	14,927		$	13,983		$	45,149		$	42,864
Undistributed earnings allocated to common shareholders	31,813			34,481			93,961			93,862
Total common shareholders earnings, basic	$	46,740		$	48,464		$	139,110		$	136,726
Diluted
Distributed earnings to common shareholders	$	14,927		$	13,983		$	45,149		$	42,864
Undistributed earnings allocated to common shareholders	31,813			34,481			93,961			93,862
Total common shareholders earnings, diluted	$	46,740		$	48,464		$	139,110		$	136,726
Weighted average common shares outstanding	148,614			155,925			149,524			159,090
Effect of dilutive common stock instruments	1,185			1,066			1,180			903
Diluted weighted average common shares outstanding	149,799			156,991			150,704			159,993
Basic earnings per common share	$	0.31		$	0.31		$	0.93		$	0.86
Diluted earnings per common share	$	0.31		$	0.31		$	0.92		$	0.85