Business Segments (Tables)

12 Months Ended

Dec. 31, 2017

Segment Reporting [Abstract]

Financial Information by Business Segment

Condensed financial information by business segment is presented below:

(in thousands)	Community Banking		Trust and Investment Services		Consolidated
For the year ended December 31, 2017:
Interest and dividend income	$	332,424	$	—		332,424
Interest expense		42,129		—		42,129
Net interest income		290,295		—		290,295
Provision for credit losses		9,986		—		9,986
Net interest income after provision for credit losses		280,309		—		280,309
Non-interest income		66,100		22,740		88,840
Non-interest expense		207,441		13,419		220,860
Income before provision for income taxes		138,968		9,321		148,289
Provision for income taxes		50,079		3,728		53,807
Net income	$	88,889	$	5,593	$	94,482
For the year ended December 31, 2016:
Interest and dividend income	$	286,097	$	—	$	286,097
Interest expense		32,767		—		32,767
Net interest income		253,330		—		253,330
Provision for credit losses		8,478		—		8,478
Net interest income after provision for credit losses		244,852		—		244,852
Non-interest income		59,869		21,630		81,499
Non-interest expense		196,784		11,896		208,680
Income before provision for income taxes		107,937		9,734		117,671
Provision for income taxes		27,142		3,894		31,036
Net income	$	80,795	$	5,840	$	86,635
For the year ended December 31, 2015:
Interest and dividend income	$	261,712	$	—	$	261,712
Interest expense		24,725		—		24,725
Net interest income		236,987		—		236,987
Provision for credit losses		8,353		—		8,353
Net interest income after provision for credit losses		228,634		—		228,634
Non-interest income		52,566		21,900		74,466
Non-interest expense		181,821		12,102		193,923
Income before provision for income taxes		99,379		9,798		109,177
Provision for income taxes		24,496		3,919		28,415
Net income	$	74,883	$	5,879	$	80,762