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Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified | Mar. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Current Assets: |  |
Accounts receivable, allowance for doubtful accounts | $ 350 | $ 399
Shareholders' Equity: |  |
Common stock, shares authorized | 240,000,000 | 240,000,000
Common stock, shares issued | 122,450,771 | 122,035,177
Common stock, shares outstanding | 122,450,771 | 122,035,177

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