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Note 20 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
Year ended December 31    
2018   $
81,727
 
2019    
69,389
 
2020    
58,273
 
2021    
46,076
 
2022    
36,685
 
Thereafter    
64,009
 
    $
356,159
 
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]
Year ended December 31    
2018   $
5,418
 
2019    
1,273
 
    $
6,691