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REGULATORY LIABILITIES (Tables)
6 Months Ended
Jun. 30, 2021
REGULATORY LIABILITIES [Abstract]  
Regulatory Liabilities
Regulatory liabilities comprise:
 
 
 
(in thousands)
 
 
 
June 30, 2021
   
December 31, 2020
 
 
           
Utility plant retirement cost obligation
 
$
78
   
$
126
 
Deferred income taxes (related to TCJA)
   
21,333
     
21,555
 
   
$
21,411
   
$
21,681