Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details)

v2.4.0.6
Summary of Significant Accounting Policies (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Net income available to common shareholders and earnings per share      
Net Interest Income after provision $ 142,155 $ 139,560 $ 127,208
Noninterest income 41,068 32,964 34,217
Noninterest expenses 133,479 130,815 129,920
Income tax expense 14,333 11,264 8,583
Net income 35,411 30,445 22,922
Prior Presentation [Member]
      
Net income available to common shareholders and earnings per share      
Net Interest Income after provision 142,155 139,560 127,208
Noninterest income 59,018 43,777 47,298
Noninterest expenses 151,429 141,628 143,001
Income tax expense 14,333 11,264 8,583
Net income 35,411 30,445 22,922
Reclass [Member]
      
Net income available to common shareholders and earnings per share      
Noninterest income (17,950) (10,813) (13,081)
Noninterest expenses $ (17,950) $ (10,813) $ (13,081)