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Note 2 - Investment Securities (Tables)
3 Months Ended
Mar. 31, 2015
Disclosure Text Block Supplement [Abstract]  
Marketable Securities [Table Text Block]
(In thousands)
 
Amortized
Cost
   
Gross
Unrealized
Gains
   
Gross
Unrealized
Losses
   
Fair
Value
 
                         
March 31, 2015
                       
Securities available for sale:
                       
Agency mortgage-backed securities
  $ 31,857     $ 397     $ 27     $ 32,227  
Agency CMO
    12,705       83       60       12,728  
Other debt securities:
                               
Agency notes and bonds
    21,226       60       5       21,281  
Municipal obligations
    31,904       1,263       57       33,110  
Subtotal - debt securities
    97,692       1,803       149       99,346  
                                 
Mutual funds
    95       0       0       95  
                                 
Total securities available for sale
  $ 97,787     $ 1,803     $ 149     $ 99,441  
                                 
Securities held to maturity:
                               
Agency mortgage-backed securities
  $ 6     $ 0     $ 0     $ 6  
                                 
Total securities held to maturity
  $ 6     $ 0     $ 0     $ 6  
                                 
December 31, 2014
                               
Securities available for sale:
                               
Agency mortgage-backed securities
  $ 32,135     $ 240     $ 79     $ 32,296  
Agency CMO
    14,461       74       150       14,385  
Other debt securities:
                               
Agency notes and bonds
    18,136       32       48       18,120  
Municipal obligations
    32,178       1,242       78       33,342  
Subtotal - debt securities
    96,910       1,588       355       98,143  
                                 
Mutual funds
    2,083       0       0       2,083  
                                 
Total securities available for sale
  $ 98,993     $ 1,588     $ 355     $ 100,226  
                                 
Securities held to maturity:
                               
Agency mortgage-backed securities
  $ 6     $ 0     $ 0     $ 6  
                                 
Total securities held to maturity
  $ 6     $ 0     $ 0     $ 6  
Investments Classified by Contractual Maturity Date [Table Text Block]
   
Securities Available for Sale
   
Securities Held to Maturity
 
   
Amortized
Cost
   
Fair
Value
   
Amortized
Cost
   
Fair
Value
 
(In thousands)
                       
                         
Due in one year or less
  $ 1,074     $ 1,080     $ 0     $ 0  
Due after one year through five years
    19,274       19,405       0       0  
Due after five years through ten years
    20,009       20,537                  
Due after ten years
    12,773       13,369       0       0  
      53,130       54,391       0       0  
Mortgage-backed securities and CMO
    44,562       44,955       6       6  
                                 
    $ 97,692     $ 99,346     $ 6     $ 6  
Schedule of Unrealized Loss on Investments [Table Text Block]
   
Number of
Investment
Positions
   
Fair
Value
   
Gross
Unrealized
Losses
 
(Dollars in thousands)
                 
                   
Continuous loss position less than twelve months:
                 
Agency notes and bonds
    1     $ 996     $ 3  
Agency CMO
    1       35       1  
Agency mortgage-backed securities
    1       1,165       2  
Muncipal obligations
    9       2,680       15  
                         
Total less than twelve months
    12       4,876       21  
                         
Continuous loss position more than twelve months:
                       
Agency notes and bonds
    1       1,001       2  
Agency CMO
    9       6,997       59  
Agency mortgage-backed securities
    4       4,617       25  
Muncipal obligations
    5       2,353       42  
                         
Total more than twelve months
    19       14,968       128  
                         
Total securities available for saleW
    31     $ 19,844     $ 149