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Note 7 - Deposits (Tables)
12 Months Ended
Dec. 31, 2013
Disclosure Text Block [Abstract]  
Deposit Composition and Interest Rate [Table Text Block]
   

2013

   

2012

   

2011

 

(dollars in thousands)

         

Average

           

Average

           

Average

 
   

Balance

   

Rate

   

Balance

   

Rate

   

Balance

   

Rate

 

Noninterest bearing demand

  $ 849,409       -     $ 881,390       -     $ 688,506       -  

Interest bearing transaction

    118,580       0.26 %     113,813       0.34 %     80,105       0.38 %

Savings and money market

    1,811,088       0.35 %     1,374,869       0.48 %     1,068,370       0.72 %

Time, $100,000 or more

    203,706       0.88 %     232,875       1.12 %     332,470       1.08 %

Other time

    242,631       0.54 %     294,275       0.71 %     222,644       1.72 %

Total

  $ 3,225,414             $ 2,897,222             $ 2,392,095          
Investments Classified by Contractual Maturity Date [Table Text Block]

(dollars in thousands)

 

2013

   

2012

   

2011

 

Three months or less

  $ 82,790     $ 102,022     $ 132,387  

More than three months through six months

    109,101       88,156       112,167  

More than six months through twelve months

    118,646       104,122       89,486  

Over twelve months

    135,800       232,850       221,074  

Total

  $ 446,337     $ 527,150     $ 555,114  
Interest Expense on Deposits [Table Text Block]

(dollars in thousands)

 

2013

   

2012

   

2011

 

Interest bearing transaction

  $ 298     $ 289     $ 236  

Savings and money market

    5,765       5,946       8,488  

Time, $100,000 or more

    2,080       2,729       5,695  

Other time

    2,471       3,093       2,829  

Total

  $ 10,614     $ 12,057     $ 17,248