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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets
Accounts receivable, allowance for doubtful accounts	$ 216	$ 230
Other assets
Non-utility property, accumulated depreciation	$ 417	$ 377

- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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