Condensed Consolidated Balance Sheets Parenthetical (USD $) In Thousands, except Share data	Sep. 30, 2011	Dec. 31, 2010
Current Assets:
Allowance for doubtful accounts	$ 1,372	$ 2,130
Stockholders' Equity:
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	27,601,549	27,657,378
Common stock, shares outstanding	26,620,450	26,676,279
Treasury stock	981,099	981,099

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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