Segment Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Summary of Certain Operating Information for Reportable Segments

The following is a summary of certain operating information for reportable segments:

(Dollars in thousands)	Community Banking		Specialty Finance		Wealth Management		Total Operating Segments		Intersegment Eliminations			Consolidated
2018
Net interest income	$	791,838	$	136,981	$	17,455	$	946,274	$	18,629		$	964,903
Provision for credit losses	28,586		6,246		—		34,832		—			34,832
Non-interest income	238,668		65,898		91,896		396,462		(40,312		)	356,150
Non-interest expense	681,749		84,248		81,774		847,771		(21,683		)	826,088
Income tax expense	79,361		30,325		7,281		116,967		—			116,967
Net income	$	240,810	$	82,060	$	20,296	$	343,166	$	—		$	343,166
Total assets at end of year	$	25,438,454	$	5,073,011	$	733,384	$	31,244,849	$	—		$	31,244,849
2017
Net interest income	$	677,481	$	118,320	$	18,919	$	814,720	$	17,356		$	832,076
Provision for credit losses	27,059		2,709		—		29,768		—			29,768
Non-interest income	211,354		60,405		84,312		356,071		(36,565		)	319,506
Non-interest expense	599,455		74,559		77,012		751,026		(19,209		)	731,817
Income tax expense	87,486		35,775		9,054		132,315		—			132,315
Net income	$	174,835	$	65,682	$	17,165	$	257,682	$	—		$	257,682
Total assets at end of year	$	22,781,923	$	4,515,766	$	618,281	$	27,915,970	$	—		$	27,915,970
2016
Net interest income	$	588,847	$	98,248	$	18,611	$	705,706	$	16,487		$	722,193
Provision for credit losses	30,862		3,222		—		34,084		—			34,084
Non-interest income	230,414		49,706		78,478		358,598		(33,168		)	325,430
Non-interest expense	556,798		66,460		75,108		698,366		(16,681		)	681,685
Income tax expense	86,933		29,512		8,534		124,979		—			124,979
Net income	$	144,668	$	48,760	$	13,447	$	206,875	$	—		$	206,875
Total assets at end of year	$	21,172,080	$	3,884,373	$	612,100	$	25,668,553	$	—		$	25,668,553