Business Segments (Tables)
 3 Months Ended
Mar. 31, 2014
Segment Reporting [Abstract]  
Selected business segment financial information
Selected business segment financial information as of and for the three months ended March 31, 2014 and 2013 were as follows:
(dollars in thousands)
Retail Banking

 
Commercial Banking

 
Investment Services

 
Treasury
and Other

 
Consolidated Total

Three Months Ended March 31, 2014
 

 
 

 
 

 
 

 
 

Net Interest Income
$
42,568

 
$
26,771

 
$
2,582

 
$
21,312

 
$
93,233

Provision for Credit Losses
1,456

 
(61
)
 
(68
)
 
(1,327
)
 
—

Net Interest Income After Provision for Credit Losses
41,112

 
26,832

 
2,650

 
22,639

 
93,233

Noninterest Income
19,492

 
6,088

 
14,343

 
4,845

 
44,768

Noninterest Expense
(49,747
)
 
(16,767
)
 
(14,235
)
 
(2,798
)
 
(83,547
)
Income Before Provision for Income Taxes
10,857

 
16,153

 
2,758

 
24,686

 
54,454

Provision for Income Taxes
(4,017
)
 
(5,514
)
 
(1,020
)
 
(5,311
)
 
(15,862
)
Net Income
$
6,840

 
$
10,639

 
$
1,738

 
$
19,375

 
$
38,592

Total Assets as of March 31, 2014
$
3,717,269

 
$
2,475,163

 
$
183,381

 
$
7,887,305

 
$
14,263,118

 
 
 
 
 
 
 
 
 


Three Months Ended March 31, 2013
 

 
 

 
 

 
 

 


Net Interest Income
$
40,703

 
$
24,983

 
$
2,771

 
$
20,103

 
$
88,560

Provision for Credit Losses
2,612

 
(604
)
 
(21
)
 
(1,987
)
 
—

Net Interest Income After Provision for Credit Losses
38,091

 
25,587

 
2,792

 
22,090

 
88,560

Noninterest Income
22,924

 
6,960

 
14,810

 
3,084

 
47,778

Noninterest Expense
(50,857
)
 
(16,512
)
 
(14,183
)
 
(2,835
)
 
(84,387
)
Income Before Provision for Income Taxes
10,158

 
16,035

 
3,419

 
22,339

 
51,951

Provision for Income Taxes
(3,759
)
 
(5,478
)
 
(1,265
)
 
(5,469
)
 
(15,971
)
Net Income
$
6,399

 
$
10,557

 
$
2,154

 
$
16,870

 
$
35,980

Total Assets as of March 31, 2013
$
3,563,313

 
$
2,193,088

 
$
188,662

 
$
7,580,604

 
$
13,525,667