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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | ---
Current assets |  |
Accounts receivable, allowance for doubtful accounts | $ 221 | $ 241
Other assets |  |
Non-utility property, accumulated depreciation | $ 389 | $ 309

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