XML 105 R95.htm IDEA: XBRL DOCUMENT v2.4.0.6
Fair Value Measurement (Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2012
Dec. 31, 2011
Mar. 31, 2011
Dec. 31, 2010
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities $ 3,156 $ 2,309    
Available for sale securities 3,095,009 3,168,578    
Mortgage servicing rights, at fair value 20,210 18,184 15,605 14,454
Junior subordinated debentures, at fair value 83,453 82,905    
Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Mortgage servicing rights, at fair value         
Total assets measured at fair value 2,389 2,013    
Junior subordinated debentures, at fair value         
Total liabilities measured at fair value         
Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Mortgage servicing rights, at fair value         
Total assets measured at fair value 3,105,306 3,176,829    
Junior subordinated debentures, at fair value         
Total liabilities measured at fair value 7,413 6,509    
Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Mortgage servicing rights, at fair value 20,210 18,184    
Total assets measured at fair value 20,210 18,184    
Junior subordinated debentures, at fair value 83,453 82,905    
Total liabilities measured at fair value 83,453 82,905    
Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Mortgage servicing rights, at fair value 20,210 18,184    
Total assets measured at fair value 3,127,905 3,197,026    
Junior subordinated debentures, at fair value 83,453 82,905    
Total liabilities measured at fair value 90,866 89,414    
Obligations Of States And Political Subdivisions [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities         
Available for sale securities         
Obligations Of States And Political Subdivisions [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities 767 296    
Available for sale securities 251,880 253,553    
Obligations Of States And Political Subdivisions [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities         
Available for sale securities         
Obligations Of States And Political Subdivisions [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities 767 296    
Available for sale securities 251,880 253,553    
Equity Securities [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities 123 1,918    
Equity Securities [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities         
Equity Securities [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities         
Equity Securities [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities 123 1,918    
Other Investments Securities [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities 2,266 [1] 95 [1]    
Other Investments Securities [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities    [1]      
Other Investments Securities [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities    [1]      
Other Investments Securities [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Trading securities 2,266 [1] 95 [1]    
U.S. Treasury And Agencies [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities         
U.S. Treasury And Agencies [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities 46,266 118,465    
U.S. Treasury And Agencies [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities         
U.S. Treasury And Agencies [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities 46,266 118,465    
Residential Mortgage-Backed Securities And Collateralized Mortgage Obligations [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities         
Residential Mortgage-Backed Securities And Collateralized Mortgage Obligations [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities 2,794,661 2,794,355    
Residential Mortgage-Backed Securities And Collateralized Mortgage Obligations [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities         
Residential Mortgage-Backed Securities And Collateralized Mortgage Obligations [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities 2,794,661 2,794,355    
Other Debt Securities [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities         
Other Debt Securities [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities 135 134    
Other Debt Securities [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities         
Other Debt Securities [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities 135 134    
Investments In Mutual Funds And Other Equity Securities [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities         
Investments In Mutual Funds And Other Equity Securities [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities 2,067 2,071    
Investments In Mutual Funds And Other Equity Securities [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities         
Investments In Mutual Funds And Other Equity Securities [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Available for sale securities 2,067 2,071    
Interest Rate Lock Commitments [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets         
Derivatives, liabilities         
Interest Rate Lock Commitments [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets 1,497 1,752    
Derivatives, liabilities 45 3    
Interest Rate Lock Commitments [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets         
Derivatives, liabilities         
Interest Rate Lock Commitments [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets 1,497 1,752    
Derivatives, liabilities 45 3    
Interest Rate Forward Sales Commitments [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets         
Derivatives, liabilities         
Interest Rate Forward Sales Commitments [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets 548      
Derivatives, liabilities 261 90    
Interest Rate Forward Sales Commitments [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets         
Derivatives, liabilities         
Interest Rate Forward Sales Commitments [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets 548      
Derivatives, liabilities 261 90    
Interest Rate Swaps [Member] | Level 1 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets         
Derivatives, liabilities         
Interest Rate Swaps [Member] | Level 2 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets 7,485 6,203    
Derivatives, liabilities 7,107 6,416    
Interest Rate Swaps [Member] | Level 3 [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets         
Derivatives, liabilities         
Interest Rate Swaps [Member] | Estimated Fair Value [Member]
       
Fair Value, Option, Qualitative Disclosures Related to Election [Line Items]        
Derivatives, assets 7,485 6,203    
Derivatives, liabilities $ 7,107 $ 6,416    
[1] Principally represents U.S. Treasury and agencies or residential mortgage-backed securities issued or guaranteed by governmental agencies.