Segment Information (Tables)

12 Months Ended

Dec. 31, 2015

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
2015
Net interest income	$	523,112	$	85,258	$	17,012	$	625,382	$	16,147		$	641,529
Provision for credit losses	29,746		3,196		—		32,942		—			32,942
Non-interest income	191,248		33,625		75,496		300,369		(28,772		)	271,597
Non-interest expense	522,199		47,245		71,600		641,044		(12,625		)	628,419
Income tax expense	60,488		26,352		8,176		95,016		—			95,016
Net income	$	101,927	$	42,090	$	12,732	$	156,749	$	—		$	156,749
Total assets at end of year	$	19,251,616	$	3,116,631	$	548,919	$	22,917,166	$	—		$	22,917,166
2014
Net interest income	$	484,523	$	82,415	$	15,968	$	582,906	$	15,669		$	598,575
Provision for credit losses	17,708		2,829		—		20,537		—			20,537
Non-interest income	136,307		32,534		73,388		242,229		(26,989		)	215,240
Non-interest expense	444,416		44,320		69,431		558,167		(11,320		)	546,847
Income tax expense	60,033		27,167		7,833		95,033		—			95,033
Net income	$	98,673	$	40,633	$	12,092	$	151,398	$	—		$	151,398
Total assets at end of year	$	16,724,834	$	2,766,017	$	519,876	$	20,010,727	$	—		$	20,010,727
2013
Net interest income	$	448,173	$	73,903	$	14,118	$	536,194	$	14,433		$	550,627
Provision for credit losses	45,396		637		—		46,033		—			46,033
Non-interest income	150,543		30,890		65,597		247,030		(24,633		)	222,397
Non-interest expense	409,780		40,529		62,442		512,751		(10,200		)	502,551
Income tax expense	55,161		25,508		6,561		87,230		—			87,230
Net income	$	88,379	$	38,119	$	10,712	$	137,210	$	—		$	137,210
Total assets at end of year	$	15,132,912	$	2,470,832	$	494,039	$	18,097,783	$	—		$	18,097,783