Note 9 - Deposits (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Deposits Liabilities [Table Text Block]
 
 
As of December 31,
 
(dollars in thousands)
 
2016
 
 
2015
 
Savings
  $
232,193
     $
187,299
  
NOW accounts*
   
380,057
      
339,366
  
Market rate accounts*
   
835,296
      
816,938
  
Retail time deposits, less than $100
   
139,276
      
123,113
  
Retail time deposits, $100 or more
   
183,636
      
106,140
  
Wholesale time deposits
    
73,037
      
53,185
  
Total interest-bearing deposits
   
1,843,495
      
1,626,041
  
Non-interest-bearing deposits
   
736,180
      
626,684
  
Total deposits
  $
2,579,675
     $
2,252,725
  
Schedule of Maturities of Time Deposits [Table Text Block]
 
 
As of
December 31, 2016
 
(dollars in thousands)
 
$100
or more
 
 
Less than
$100
 
Maturing during:
                
2017
  $
154,965
     $
107,043
  
2018
   
16,281
      
17,152
  
2019
    
4,982
      
8,011
  
2020
    
3,044
      
3,466
  
2021 and thereafter
    
4,364
      
3,604
  
Total
  $
183,636
     $
139,276
  
Schedule of Time Deposit Contractual Maturities [Table Text Block]
 
 
As of
December 31, 2016
 
(dollars in thousands)
 
$100
or more
 
 
Less than
$100
 
Maturing during:
                
2017
  $
72,783
     $
254
  
Total
  $
72,783
     $
254