XML 84 R60.htm IDEA: XBRL DOCUMENT v2.4.0.8
FAIR VALUE DISCLOSURES (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2011
Available-for-sale securities [Abstract]        
Mortgage servicing rights $ 51,025 $ 37,882 $ 34,562 $ 30,174
Minimum [Member]
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative interest rate 1.53%      
Maximum [Member]
       
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Derivative interest rate 3.70%      
Fair Value, Measurements, Recurring [Member]
       
Available-for-sale securities [Abstract]        
U.S. Government agencies 1,519,459   1,472,747  
Government agency issued residential mortgage-backed securities 268,367   338,230  
Government agency issued commercial mortgage-backed securities 229,412   90,306  
Obligations of states and political subdivisions 528,889   574,559  
Other 8,029   7,764  
Mortgage servicing rights 51,025   34,562  
Derivative instruments 35,004   62,088  
Total 2,640,185   2,580,256  
Liabilities [Abstract]        
Derivative instruments 35,386   60,077  
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
       
Available-for-sale securities [Abstract]        
Other 1,048   672  
Total 1,048   672  
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
       
Available-for-sale securities [Abstract]        
U.S. Government agencies 1,519,459   1,472,747  
Government agency issued residential mortgage-backed securities 268,367   338,230  
Government agency issued commercial mortgage-backed securities 229,412   90,306  
Obligations of states and political subdivisions 528,889   574,559  
Other 6,981   7,092  
Total 2,553,108   2,482,934  
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
       
Available-for-sale securities [Abstract]        
Mortgage servicing rights 51,025   34,562  
Derivative instruments 35,004   62,088  
Total 86,029   96,650  
Liabilities [Abstract]        
Derivative instruments $ 35,386   $ 60,077