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REGULATORY LIABILITIES (Tables)
3 Months Ended
Mar. 31, 2020
REGULATORY LIABILITIES [Abstract]  
Regulatory Liabilities
Regulatory liabilities comprise:
 
 
(in thousands)
 
 
March 31, 2020
 
December 31, 2019
 
 
      
Utility plant retirement cost obligation
 
$
216
  
$
247
 
Deferred income taxes (related to TCJA)
  
21,888
   
21,999
 
  
$
22,104
  
$
22,246