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Note 4 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Year ending December 31,
 
Minimum
Lease Payments
 
2017
  $
295
 
2018
   
2,736
 
2019 and thereafter
   
622
 
    $
1,190
 
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]
Year ending December 31,
 
Capital Lease
Obligations
 
2017
  $
145
 
2018
   
45
 
2019
   
17
 
2020 and thereafter
   
 
     
207
 
Less amounts representing interest
   
(7
)
    $
200