v2.4.0.8
SEGMENT INFORMATION (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
Information about reportable segments          
Net interest income $ 60,601 $ 58,775 $ 177,458 $ 170,455  
Provision for loan losses 2,093 2,643 4,807 6,442  
Noninterest income 27,594 25,859 80,801 73,023  
Amortization of intangible assets 1,089 1,212 3,408 3,343  
Other operating expenses 53,955 54,873 160,564 151,515  
Income before income taxes 31,058 25,906 89,480 82,178  
Assets 7,302,017 7,570,373 7,302,017 7,570,373 7,496,800
Goodwill 369,703 369,703 369,703 369,703 369,703
Eliminations [Member]
          
Information about reportable segments          
Net interest income 0 0 0 0  
Provision for loan losses 0 0 0 0  
Noninterest income (527) (541) (1,717) (1,630)  
Amortization of intangible assets 0 0 0 0  
Other operating expenses (527) (541) (1,717) (1,630)  
Income before income taxes 0 0 0 0  
Assets (14,519) (17,083) (14,519) (17,083)  
Goodwill 0 0 0 0  
Banking [Member]
          
Information about reportable segments          
Net interest income 60,566 58,730 177,319 170,329  
Provision for loan losses 2,093 2,643 4,807 6,442  
Noninterest income 14,372 13,753 40,667 37,045  
Amortization of intangible assets 875 958 2,720 2,536  
Other operating expenses 43,497 44,796 129,674 121,902  
Income before income taxes 28,473 24,086 80,785 76,494  
Assets 7,276,673 7,546,153 7,276,673 7,546,153  
Goodwill 359,207 359,207 359,207 359,207  
Other [Member]
          
Information about reportable segments          
Net interest income 35 45 139 126  
Provision for loan losses 0 0 0 0  
Noninterest income 13,749 12,647 41,851 37,608  
Amortization of intangible assets 214 254 688 807  
Other operating expenses 10,985 10,618 32,607 31,243  
Income before income taxes 2,585 1,820 8,695 5,684  
Assets 39,863 41,303 39,863 41,303  
Goodwill $ 10,496 $ 10,496 $ 10,496 $ 10,496