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Note 8 - Long-term Borrowings (Tables)
9 Months Ended
Sep. 30, 2016
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
(dollars in thousands)
 
September 30, 2016
   
December 31, 2015
   
September 30, 2015
 
                         
Subordinated Notes, 5.75%
  $ 70,000     $ 70,000     $ 70,000  
Subordinated Notes, 5.0%
    150,000       -       -  
Less: debt issurance costs
    (3,581 )     (1,072 )     (1,103 )
Long-term borrowings
  $ 216,419     $ 68,928     $ 68,897