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REGULATORY ASSETS (Tables)
 9 Months Ended
Sep. 30, 2015
REGULATORY ASSETS [Abstract]  
Regulatory assets, net of amortization, comprise
Regulatory assets, net of amortization, comprise:
 
  
(in thousands)
 
  
September 30, 2015
  
December 31, 2014
 
     
Postretirement benefit obligation
 
$
384
  
$
384
 
Deferred income taxes
  
450
   
461
 
Goodwill
  
320
   
325
 
Deferred acquisition and franchise costs
  
729
   
756
 
Expense of rate and regulatory proceedings
  
726
   
635
 
  
$
2,609
  
$
2,561