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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)
12 Months Ended
Dec. 31, 2018
FAIR VALUE OF FINANCIAL INSTRUMENTS [Abstract]  
Carrying Amount and Fair Value of Long-Term Debt
In thousands
December 31,
 
 
2018
 
2017
 
Carrying amount
 
$
117,587
  
$
106,931
 
Estimated fair value
  
116,818
   
110,524