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LONG-TERM DEBT (Tables)
 6 Months Ended
Jun. 30, 2016
LONG-TERM DEBT [Abstract]  
Long-term Debt
Long-term debt consisted of the following at June 30, 2016 and December 31, 2015 (in thousands):

  
June 30,
2016
  
December 31,
2015
 
       
Line of credit
 
$
193,738
  
$
172,147
 
Term loan
  
150,000
   
175,000
 
Promissory note payable in monthly installments at 2.9% through January 2021, collateralized by equipment
  
3,996
   
4,408
 
Less unamortized debt issuance costs
  
(602
)
  
(2,046
)
   
347,132
   
349,509
 
Less: Current portion
  
(112,091
)
  
(50,829
)
Long-term debt less current maturities
 
$
235,041
  
$
298,680