Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information (Unaudited)

Quarterly Financial Information (Unaudited)

	Quarters Ended
($ and shares in thousands, except per share data)	December 31,		September 30,		June 30,		March 31,
2017
Interest and dividend income	$	359,765	$	339,910	$	322,775	$	302,669
Interest expense	40,064		36,755		32,684		30,547
Net interest income before provision for credit losses	319,701		303,155		290,091		272,122
Provision for credit losses	15,517		12,996		10,685		7,068
Net interest income after provision for credit losses	304,184		290,159		279,406		265,054
Noninterest income	45,359		49,624		47,400		116,023
Noninterest expense	175,416		164,499		169,121		153,073
Income before income taxes	174,127		175,284		157,685		228,004
Income tax expense	89,229		42,624		39,355		58,268
Net income	$	84,898	$	132,660	$	118,330	$	169,736
EPS
- Basic	$	0.59	$	0.92	$	0.82	$	1.18
- Diluted	$	0.58	$	0.91	$	0.81	$	1.16
Weighted-average number of shares outstanding
- Basic	144,542		144,498		144,485		144,249
- Diluted	146,030		145,882		145,740		145,732
Cash dividends declared per common share	$	0.20	$	0.20	$	0.20	$	0.20

	Quarters Ended
($ and shares in thousands, except per share data)	December 31,		September 30,		June 30,		March 31,
2016
Interest and dividend income	$	302,127	$	280,317	$	278,865	$	276,172
Interest expense	29,425		26,169		25,281		23,968
Net interest income before provision for credit losses	272,702		254,148		253,584		252,204
Provision for credit losses	10,461		9,525		6,053		1,440
Net interest income after provision for credit losses	262,241		244,623		247,531		250,764
Noninterest income	48,800		49,341		44,264		40,513
Noninterest expense	149,904		170,500		148,879		146,606
Income before income taxes	161,137		123,464		142,916		144,671
Income tax expense	50,403		13,321		39,632		37,155
Net income	$	110,734	$	110,143	$	103,284	$	107,516
EPS
- Basic	$	0.77	$	0.76	$	0.72	$	0.75
- Diluted	$	0.76	$	0.76	$	0.71	$	0.74
Weighted-average number of shares outstanding
- Basic	144,166		144,122		144,101		143,958
- Diluted	145,428		145,238		145,078		144,803
Cash dividends declared per common share	$	0.20	$	0.20	$	0.20	$	0.20