Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Data

	Quarters Ended 2015
	March 31		June 30			September 30			December 31
	(in thousands, except for share data)
Interest income	$	170,985	$	175,754		$	174,690		$	185,594
Interest expense	38,899		39,577			40,730			37,548
Net interest income	132,086		136,177			133,960			148,046
Provision for credit losses	—		4,500			94			3,507
Non-interest income:
Gains (losses) on securities transactions, net	2,416		(92		)	157			6
Gains on sales of loans, net	598		422			2,014			1,211
Gains (losses) on sales of assets, net	281		200			(558		)	2,853
Other non-interest income	15,350		19,670			19,306			19,968
Non-interest expense:
Loss on extinguishment of debt	—		—			—			51,129
Amortization of tax credit investments	4,496		4,511			5,224			13,081
Other non-interest expense	103,622		102,901			103,428			110,683
Income (loss) before income taxes	42,613		44,465			46,133			(6,316		)
Income tax expense (benefit)	12,272		12,474			10,179			(10,987		)
Net income	30,341		31,991			35,954			4,671
Dividend on preferred stock	—		—			2,017			1,796
Net income available to common shareholders	30,341		31,991			33,937			2,875
Earnings per common share:
Basic	$	0.13	$	0.14		$	0.15		$	0.01
Diluted	0.13		0.14			$	0.15		0.01
Cash dividends declared per common share	0.11		0.11			0.11			0.11
Weighted average number of common shares outstanding:
Basic	232,338,775		232,565,404			232,737,953			239,916,562
Diluted	232,341,921		232,586,616			232,780,219			239,972,546

	Quarters Ended 2014
	March 31			June 30			September 30			December 31
	(in thousands, except for share data)
Interest income	$	153,038		$	157,164		$	155,459		$	170,942
Interest expense	39,014			39,745			40,791			42,296
Net interest income	114,024			117,419			114,668			128,646
Provision for credit losses	3,998			(5,671		)	(423		)	3,980
Non-interest income:
(Losses) gains on securities transactions, net	(8		)	7			103			643
Gains (losses) on sales of loans, net	913			679			(95		)	234
(Losses) gains on sales of assets	(148		)	276			83			17,876
Other non-interest income	19,981			11,572			14,690			10,810
Non-interest expense:
Loss on extinguishment of debt	—			—			—			10,132
Amortization of tax credit investments	3,716			5,802			4,630			10,048
Other non-interest expense	92,383			88,551			86,906			101,087
Income before income taxes	34,665			41,271			38,336			32,962
Income tax expense	830			11,751			10,654			7,827
Net income	33,835			29,520			27,682			25,135
Earnings per common share:
Basic	$	0.17		$	0.15		$	0.14		$	0.11
Diluted	0.17			0.15			0.14			0.11
Cash dividends declared per common share	0.11			0.11			0.11			0.11
Weighted average number of common shares outstanding:
Basic	200,128,384			200,472,592			200,614,091			221,471,635
Diluted	200,128,384			200,472,592			200,614,091			221,471,635