Earnings Per Common Share (Tables)

6 Months Ended

Jun. 30, 2015

Earnings Per Share [Abstract]

Calculations for basic and diluted earnings per common share

	Three Months Ended June 30,						Six Months Ended June 30,
	2015			2014			2015			2014
	(In Thousands, except per share data)
Net income	$	49,400		$	46,365		$	96,072		$	91,564
Preferred stock dividends	(1,545		)	(1,278		)	(2,773		)	(2,522		)
Net income available to common equity	$	47,855		$	45,087		$	93,299		$	89,042
Common shareholder dividends	(15,056		)	(14,393		)	(30,222		)	(28,881		)
Dividends on unvested share-based payment awards	(172		)	(143		)	(286		)	(294		)
Undistributed earnings	$	32,627		$	30,551		$	62,791		$	59,867
Undistributed earnings allocated to common shareholders	$	32,262		$	30,247		$	62,148		$	59,375
Undistributed earnings allocated to unvested share-based payment awards	365			304			643			492
Undistributed earnings	$	32,627		$	30,551		$	62,791		$	59,867
Basic
Distributed earnings to common shareholders	$	15,056		$	14,393		$	30,222		$	28,881
Undistributed earnings allocated to common shareholders	32,262			30,247			62,148			59,375
Total common shareholders earnings, basic	$	47,318		$	44,640		$	92,370		$	88,256
Diluted
Distributed earnings to common shareholders	$	15,056		$	14,393		$	30,222		$	28,881
Undistributed earnings allocated to common shareholders	32,262			30,247			62,148			59,375
Total common shareholders earnings, diluted	$	47,318		$	44,640		$	92,370		$	88,256
Weighted average common shares outstanding	149,903			159,940			149,986			160,699
Effect of dilutive common stock instruments	1,205			898			1,143			814
Diluted weighted average common shares outstanding	151,108			160,838			151,129			161,513
Basic earnings per common share	$	0.32		$	0.28		$	0.62		$	0.55
Diluted earnings per common share	$	0.31		$	0.28		$	0.61		$	0.55