XML 20 R79.htm IDEA: XBRL DOCUMENT v2.4.0.6
GOODWILL AND OTHER INTANGIBLE ASSETS (Details) (USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Dec. 31, 2010
Sep. 30, 2012
Premiums on acquired deposits
Sep. 30, 2011
Premiums on acquired deposits
Sep. 30, 2012
Premiums on acquired deposits
Sep. 30, 2011
Premiums on acquired deposits
Dec. 31, 2011
Premiums on acquired deposits
GOODWILL AND OTHER INTANGIBLE ASSETS                  
Goodwill $ 337,438,000 $ 337,438,000 $ 337,438,000            
Market capitalization 3,090,000,000                
Total stockholders' equity 2,318,209,000 2,311,743,000 2,261,169,000 2,113,931,000          
Premiums on Acquired Deposits                  
Premiums on acquired deposits         115,300,000   115,300,000   117,600,000
Accumulated amortization for premiums on acquired deposits         56,500,000   56,500,000   50,400,000
Amortization expense of premiums on acquired deposits         2,700,000 3,100,000 8,400,000 9,400,000  
Estimated Future Amortization Expense of Premiums on Acquired Deposits                  
Remainder of the year         2,461,000   2,461,000    
Year Ending December 31, 2013         9,365,000   9,365,000    
Year Ending December 31, 2014         8,454,000   8,454,000    
Year Ending December 31, 2015         7,543,000   7,543,000    
Year Ending December 31, 2016         6,634,000   6,634,000    
Thereafter         24,289,000   24,289,000    
Total         $ 58,746,000   $ 58,746,000