v2.4.0.8
GOODWILL AND IDENTIFIABLE INTANGIBLE ASSETS (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount $ 50,345 $ 49,767  
Accumulated Amortization (35,400) (34,259)  
Net Carrying Amount 14,945 15,508  
Finite-lived intangible assets, future amortization expense [Abstract]      
Apr - Dec 2014 3,146    
2015 3,408    
2016 2,612    
2017 1,908    
2018 1,424    
Thereafter 2,447    
Net Carrying Amount 14,945 15,508  
Components of goodwill [Abstract]      
Goodwill 379,998 379,815  
Goodwill, Activity 183    
Accumulated Impairment (4,824) (4,824)  
Accumulated impairment, Activity 0    
Goodwill, net 375,174 374,991 369,703
Goodwill, net, Activity 183    
Core Deposit Intangibles [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 40,326 40,326  
Accumulated Amortization (27,778) (26,866)  
Net Carrying Amount 12,548 13,460  
Finite-lived intangible assets, future amortization expense [Abstract]      
Net Carrying Amount 12,548 13,460  
Other Intangibles [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Gross Carrying Amount 10,019 9,441  
Accumulated Amortization (7,622) (7,393)  
Net Carrying Amount 2,397 2,048  
Finite-lived intangible assets, future amortization expense [Abstract]      
Net Carrying Amount $ 2,397 $ 2,048