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Note 10 - Operating Leases (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Operating Leases of Lessee Disclosure [Table Text Block]
  Years Ending December 31,  
Amount
 
  2017   $
3,634
 
 
  2018    
2,971
 
 
  2019    
2,055
 
 
  2020    
1,654
 
 
  2021    
741
 
 
  Thereafter    
260
 
 
  Total future minimum rental payments   $
11,315