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Note 9 - Leases and Commitments (Tables)
9 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Capital Leased Assets [Table Text Block]
   
Capitalized Costs
   
Accumulated Amortization
   
Net Book Value
 
September 30, 2015
 
$
35,784
 
 
$
11,417
 
 
$
24,367
 
December 31, 2014
    75,188       27,770       47,418  
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]
   
2015
   
2016
   
2017
   
2018
   
2019
   
Thereafter
 
Capital leases
  $ 7,707     $ 11,466     $ 2,669     $ 1,872     $ --     $ --  
Operating leases
    6,206       5,991       5,827       3,168       1,950       2,361