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Note 9 - Leases (Tables)
3 Months Ended
Mar. 31, 2019
Notes Tables  
Lease, Cost [Table Text Block]
Lease Costs:
       
Finance lease cost:
       
Amortization of right-of-use asset
  $
69
 
Interest Expense
   
39
 
Other
   
2
 
Operating lease cost
   
83
 
Total lease cost
  $
193
 
Lease, Term and Discount Rate [Table Text Block]
   
Operating
   
Finance
 
Weighted-average term (years)
   
5.4
     
11.3
 
Weighted-average discount rate
   
3.2
%    
3.3
%
Operating and Finance Lease, Liability, Maturity [Table Text Block]
   
Operating
   
Finance
 
Undiscounted cash flows due within:
               
2019
  $
226
    $
248
 
2020
   
294
     
343
 
2021
   
278
     
356
 
2022
   
279
     
363
 
2023
   
279
     
363
 
2024 and thereafter
   
1,466
     
1,664
 
Total undiscoutned cash flows
   
2,822
     
3,337
 
                 
Impact of present value discount
   
(771
)    
(635
)
                 
Amount reported on balance sheet
  $
2,051
    $
2,702