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Note 5 - Capital Leased Assets (Tables)
6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Capital Leased Assets [Table Text Block]
 
 
June 30,
 
 
December 31,
 
 
 
2017
 
 
2016
 
Leased property under capital leases
  $
11,447
    $
10,783
 
Less accumulated amortization
   
(5,012
)    
(4,748
)
Leased property under capital leases, net
  $
6,435
    $
6,035