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Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Accounts receivable, allowance	$ 66,000	$ 66,000
Common stock, par value	$ 0.02	$ 0.02
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	19,420,780	19,391,319
Common stock, shares outstanding	19,420,780	19,391,319

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A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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