The following is a summary of the unaudited quarterly results of operation for the years ended December 31, 2018, 2017 and 2016. In the opinion of management, the information reflects all adjustments that are necessary for the fair presentation of the results of operations for the periods presented.



	2018
(Dollars in thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total
Interest income	$	177,934	$	189,582	$	198,377	$	210,103	$	775,996
Interest expense	26,071		32,045		38,896		46,651		143,663
Net interest income	151,863		157,537		159,481		163,452		632,333
Provision for loan losses	6,256		9,572		6,028		8,894		30,750
Noninterest income	40,554		38,018		37,917		32,047		148,536
Operating expenses	101,610		104,561		109,661		108,366		424,198
Income before income taxes	84,551		81,422		81,709		78,239		325,921
Income tax expense	12,955		12,434		11,312		5,200		41,901
Net income	$	71,596	$	68,988	$	70,397	$	73,039	$	284,020
Net income per common share:
Basic	$	1.01	$	0.97	$	0.99	$	1.02	$	3.98
Diluted	0.99		0.96		0.98		1.01		3.94
Cash dividends declared per common share	0.28		0.28		0.34		0.34		1.24



	2017
(Dollars in thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total
Interest income	$	142,896	$	155,133	$	164,944	$	169,162	$	632,135
Interest expense	12,799		17,185		21,316		23,257		74,557
Net interest income	130,097		137,948		143,628		145,905		557,578
Provision for loan losses	4,050		6,229		5,499		7,522		23,300
Noninterest income	38,010		41,568		32,122		32,319		144,019
Operating expenses	104,196		98,237		119,539		100,022		421,994
Income before income taxes	59,861		75,050		50,712		70,680		256,303
Income tax expense	12,257		23,036		10,253		61,234		106,780
Net income	$	47,604	$	52,014	$	40,459	$	9,446	$	149,523
Net income per common share:
Basic	$	0.67	$	0.73	$	0.57	$	0.13	$	2.11
Diluted	0.67		0.73		0.56		0.13		2.08
Cash dividends declared per common share	0.27		0.27		0.28		0.28		1.10



	2016
(Dollars in thousands, except per share data)	First Quarter		Second Quarter		Third Quarter		Fourth Quarter		Total
Interest income	$	79,464	$	82,937	$	103,562	$	144,416	$	410,379
Interest expense	5,134		5,442		6,753		11,969		29,298
Net interest income	74,330		77,495		96,809		132,447		381,081
Provision for loan losses	1,500		3,000		4,103		6,272		14,875
Noninterest income	19,419		20,897		27,770		54,264		122,350
Operating expenses	58,887		59,085		106,144		114,302		338,418
Income before income taxes	33,362		36,307		14,332		66,137		150,138
Income tax expense	9,757		10,532		2,848		18,969		42,106
Net income	$	23,605	$	25,775	$	11,484	$	47,168	$	108,032
Net income per common share:
Basic	$	0.61	$	0.67	$	0.23	$	0.67	$	2.21
Diluted	0.60		0.67		0.23		0.66		2.17
Cash dividends declared per common share	0.26		0.26		0.27		0.27		1.06