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Note 8 - Debt (Tables)
 6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Long-term Debt Instruments [Table Text Block]
    June 30,
2017		   December 31,
2016
Loan   $
85,000
     $
3.532
  
Less deferred loan costs and discount    
(9,869
 )    
(803
 )
Total Loan, net    
75,131
      
2,729
  
Notes and deferred payments to sellers, Tealstone acquisition
    
11,909
      
-
  
Notes payable for transportation and construction equipment and other    
2,124
      
2,665
  
     
89,164
      
5,394
  
                 
Current maturities of long-term debt    
1,039
      
4,648
  
Less current deferred loan costs    
-
      
(803
 )
     Less current maturities of long-term debt, net    
(1,039
 )    
(3,845
 )
Total long-term debt   $
88,125
     $
1,549