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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
12 Months Ended
Dec. 31, 2016
FAIR VALUE OF FINANCIAL INSTRUMENTS [Abstract]  
Fair value of long-term debt
In thousands
December 31,
 
 
2016
 
2015
 
Carrying amount
 
$
103,647
  
$
104,936
 
Estimated fair value
  
111,864
   
120,243