CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets (Note 6)
Accounts receivable, allowance for doubtful accounts	$ 343	$ 358
Inventories, obsolescence reserve	287	319
Property and equipment, accumulated depreciation	$ 20,602	$ 19,950

The amount of the valuation account as of the balance sheet date which reduces the carrying amount of inventory to net realizable value; takes into consideration such factors as market value, excessive quantities based on expected sales, technological obsolescence, and shrinkage. May also provide for estimated product returns or price concessions pertaining to product cost.

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+ Details