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Note 16 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2018
Notes Tables  
Summary Of Financial Instrument Outstanding [Table Text Block]
   
Contract Amount
 
   
20
1
8
   
2017
 
                 
Commitments to Extend Credit
 
$
98,736,000
    $
96,374,000
 
Standby Letters of Credit
 
 
1,525,000
     
1,536,000