Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Data

	Quarters Ended 2017
	March 31		June 30		September 30		December 31
	(in thousands, except for share data)
Interest income	$	199,116	$	211,147	$	211,650	$	220,506
Interest expense	36,587		42,187		46,796		48,537
Net interest income	162,529		168,960		164,854		171,969
Provision for credit losses	2,470		3,632		1,640		2,200
Non-interest income:
Gains on sales of loans, net	4,128		4,791		5,520		6,375
Other non-interest income	20,931		19,899		20,568		21,229
Non-interest expense:
Amortization of tax credit investments	5,324		7,732		8,389		20,302
Other non-interest expense	115,628		111,507		124,176		116,015
Income before income taxes	64,166		70,779		56,737		61,056
Income tax expense	18,071		20,714		17,088		34,958
Net income	46,095		50,065		39,649		26,098
Dividend on preferred stock	1,797		1,797		2,683		3,172
Net income available to common shareholders	44,298		48,268		36,966		22,926
Earnings per common share:
Basic	$	0.17	$	0.18	$	0.14	$	0.09
Diluted	0.17		0.18		$	0.14	0.09
Cash dividends declared per common share	0.11		0.11		0.11		0.11
Weighted average number of common shares outstanding:
Basic	263,797,024		263,958,292		264,058,174		264,332,895
Diluted	264,546,266		264,778,242		264,936,220		265,288,067

	Quarters Ended 2016
	March 31		June 30		September 30		December 31
	(in thousands, except for share data)
Interest income	$	185,597	$	189,028	$	191,203	$	201,095
Interest expense	37,444		37,573		37,057		36,700
Net interest income	148,153		151,455		154,146		164,395
Provision for credit losses	800		1,429		5,840		3,800
Non-interest income:
Gains on sales of loans, net	1,795		3,105		4,823		12,307
Other non-interest income	19,653		21,159		20,030		20,353
Non-interest expense:
Amortization of tax credit investments	7,264		7,646		6,450		13,384
Other non-interest expense	110,961		112,157		106,818		111,445
Income before income taxes	50,576		54,487		59,891		68,426
Income tax expense	14,389		15,460		17,049		18,336
Net income	36,187		39,027		42,842		50,090
Dividend on preferred stock	1,797		1,797		1,797		1,797
Net income available to common shareholders	34,390		37,230		41,045		48,293
Earnings per common share:
Basic	$	0.14	$	0.15	$	0.16	$	0.19
Diluted	0.14		0.15		0.16		0.19
Cash dividends declared per common share	0.11		0.11		0.11		0.11
Weighted average number of common shares outstanding:
Basic	254,075,349		254,381,170		254,473,994		256,422,437
Diluted	254,347,420		254,771,213		254,940,307		256,952,036