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Commitments and Contingent Liabilities (Tables)
 6 Months Ended
Jun. 30, 2015
Commitments and Contingent Liabilities [Abstract]  
Schedule of purchased water cost

 

 

(In Thousands)
  Three Months Ended Six Months Ended
  June 30, June 30,
  2015   2014 2015 2014
 

       
Treated $ 766 $ 802   $ 1,495     $ 1,580  
Untreated
552 515     1,195       1,121  
Total Costs $ 1,318 $ 1,317   $ 2,690     $ 2,701