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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
ASSETS    
Utility Plant, accumulated depreciation $ 134,310 $ 126,114
Current assets    
Accounts receivable, allowance for doubtful accounts 254 232
Other assets    
Non-utility Property, accumulated depreciation $ 780 $ 734