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Business Segment Data (Tables)
 3 Months Ended
Mar. 31, 2017
Segment Reporting [Abstract]  
Schedule of segment reporting information, by segment

Finance charges on inter-segment loan activities are based on interest rates that are below what would normally be charged by a third party lender.

   (In Thousands)
   Three Months Ended
   March 31,
Operations by Segments:  2017  2016
Revenues:      
   Regulated  $26,493   $26,949 
   Non – Regulated   3,750    3,734 
Inter-segment Elimination   (112)   (104)
Consolidated Revenues  $30,131   $30,579 
           
Operating Income:          
   Regulated  $7,220   $7,733 
   Non – Regulated   560    569 
Consolidated Operating Income  $7,780   $8,302 
           
Net Income:          
   Regulated  $4,139   $4,492 
   Non – Regulated   302    298 
Consolidated Net Income  $4,441   $4,790 
           
Capital Expenditures:          
  Regulated  $9,572   $6,660 
   Non – Regulated   5    12 
Total Capital Expenditures  $9,577   $6,672 

 

   As of  As of
    March 31,  December 31,
    2017  2016
Assets:          
   Regulated  $629,668   $619,915 
   Non – Regulated   6,850    6,245 
Inter-segment Elimination   (9,257)   (5,999)
Consolidated Assets  $627,261   $620,161