Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details)

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FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
ASSETS:    
Interest rate swap $ 828 $ 33
Cash flow hedges 33  
Available for sale securities, estimated fair value 1,095,636 677,348
LIABILITIES:    
Interest rate swap 828 33
Cash flow hedges 5,049 3,562
Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS:    
Interest rate swap     
Cash flow hedges     
Available for sale securities, estimated fair value     
LIABILITIES:    
Interest rate swap     
Cash flow hedges     
Significant Other Observable Inputs Level 2 [Member]
   
ASSETS:    
Interest rate swap 828 33
Cash flow hedges 33  
Available for sale securities, estimated fair value 1,095,636 677,348
LIABILITIES:    
Interest rate swap 828 33
Cash flow hedges 5,049 3,562
Significant Unobservable Inputs Level 3 [Member]
   
ASSETS:    
Interest rate swap     
Cash flow hedges     
Available for sale securities, estimated fair value     
LIABILITIES:    
Interest rate swap     
Cash flow hedges     
Recurring [Member]
   
ASSETS:    
Interest rate swap 828 33
Cash flow hedges 33  
LIABILITIES:    
Interest rate swap 828 33
Cash flow hedges 5,049 3,562
Recurring [Member] | Interest Rate Lock Commitments [Member]
   
ASSETS:    
Derivative assets 612  
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS:    
Interest rate swap      
Cash flow hedges     
LIABILITIES:    
Interest rate swap      
Cash flow hedges      
Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member] | Interest Rate Lock Commitments [Member]
   
ASSETS:    
Derivative assets     
Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
   
ASSETS:    
Interest rate swap 828 33
Cash flow hedges 33  
LIABILITIES:    
Interest rate swap 828 33
Cash flow hedges 5,049 3,562
Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
   
ASSETS:    
Interest rate swap      
Cash flow hedges     
LIABILITIES:    
Interest rate swap      
Cash flow hedges      
Recurring [Member] | Significant Unobservable Inputs Level 3 [Member] | Interest Rate Lock Commitments [Member]
   
ASSETS:    
Derivative assets 612  
US Government Agencies Debt Securities [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 1,931 2,153
US Government Agencies Debt Securities [Member] | Recurring [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 1,931 2,153
US Government Agencies Debt Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
US Government Agencies Debt Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 1,931 2,153
US Government Agencies Debt Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
Obligations of States and Political Subdivisions [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 435,657 254,830
Obligations of States and Political Subdivisions [Member] | Recurring [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 435,657 254,830
Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 435,657 254,830
Obligations of States and Political Subdivisions [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
Corporate and Other Bonds [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 78,899 9,434
Corporate and Other Bonds [Member] | Recurring [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 78,899 9,434
Corporate and Other Bonds [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
Corporate and Other Bonds [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 78,899 9,434
Corporate and Other Bonds [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
Mortgage Backed Securities [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 569,328 407,362
Mortgage Backed Securities [Member] | Recurring [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 569,328 407,362
Mortgage Backed Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
Mortgage Backed Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 569,328 407,362
Mortgage Backed Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
Other Securities [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 9,821 3,569
Other Securities [Member] | Recurring [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 9,821 3,569
Other Securities [Member] | Recurring [Member] | Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value      
Other Securities [Member] | Recurring [Member] | Significant Other Observable Inputs Level 2 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value 9,821 3,569
Other Securities [Member] | Recurring [Member] | Significant Unobservable Inputs Level 3 [Member]
   
ASSETS:    
Available for sale securities, estimated fair value