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CONDENSED CONSOLIDATED BALANCE SHEETS Parenthetical - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
ASSETS    
Utility plant, at original cost (accumulated depreciation) $ 109,309 $ 104,750
Current assets    
Accounts receivable (allowance for doubtful accounts) 261 277
Other assets    
Non utility property (accumulated depreciation) $ 591 $ 535