XML 16 R3.htm IDEA: XBRL DOCUMENT v3.10.0.1
CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
ASSETS    
Utility Plant, accumulated depreciation $ 121,890 $ 116,945
Current assets    
Accounts receivable, allowance for doubtful accounts 302 288
Other assets    
Non-utility Property, accumulated depreciation $ 726 $ 689