v2.4.0.8
Segment Reporting (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
segment
Sep. 30, 2013
Dec. 31, 2013
Segment Reporting Information [Line Items]          
Number of primary operating segments     2    
Number of reportable segments     2    
Income Statement Information          
Net interest income (expense) $ 27,444 $ 32,574 $ 86,552 $ 102,781  
Provision for loan losses (1,811) 2,159 3,398 (305)  
Noninterest income 4,452 3,716 11,779 4,953  
Noninterest expense 21,121 21,008 62,668 62,439  
Income before income tax expense 12,586 13,123 32,265 45,600  
Total assets 3,209,590   3,209,590   3,170,197
Banking
          
Income Statement Information          
Net interest income (expense) 27,804 33,476 87,733 105,738  
Provision for loan losses (1,811) 2,159 3,398 (305)  
Noninterest income 2,424 1,684 5,448 (1,758)  
Noninterest expense 18,353 17,855 53,817 53,006  
Income before income tax expense 13,686 15,146 35,966 51,279  
Total assets 3,093,055   3,093,055   3,051,256
Wealth Management
          
Income Statement Information          
Net interest income (expense) (16) (166) (58) (292)  
Provision for loan losses 0 0 0 0  
Noninterest income 1,909 2,006 6,200 6,611  
Noninterest expense 1,946 1,809 5,589 5,644  
Income before income tax expense (53) 31 553 675  
Total assets 98,269   98,269   101,026
Corporate and Intercompany
          
Income Statement Information          
Net interest income (expense) (344) (736) (1,123) (2,665)  
Provision for loan losses 0 0 0 0  
Noninterest income 119 26 131 100  
Noninterest expense 822 1,344 3,262 3,789  
Income before income tax expense (1,047) (2,054) (4,254) (6,354)  
Total assets $ 18,266   $ 18,266   $ 17,915