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Consolidated Statements of Changes in Shareholders' Equity (Parentheticals)(Common Stock [Member]) | 12 Months Ended
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Dec. 31, 2011 Stock Issued To Directors [Member] | Dec. 31, 2010 Stock Issued To Directors [Member] | Dec. 31, 2009 Stock Issued To Directors [Member] | Dec. 31, 2011 Bonuses Paid Through Stock Issuances [Member] | Dec. 31, 2010 Bonuses Paid Through Stock Issuances [Member] | Dec. 31, 2009 Bonuses Paid Through Stock Issuances [Member] | Dec. 31, 2009 Common Stock And Warrant Private Placement Issuance [Member] | Dec. 31, 2009 Common Stock And Warrant Public Offering [Member] | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Options exercised, shares |  |  |  |  |  |  |  |  | 78,000 | 696,000 | 10,000
Shares issued, share based compensation | 43,000 | 82,000 | 23,000 | 8,000 | 1,046,000 | 925,000 |  |  |  |  |
Restricted stock unit distributions, shares |  |  |  |  |  |  |  |  | 321,000 | 480,000 | 152,000
Common stock and warrant issuance, shares |  |  |  |  |  |  | 17,391,000 | 36,800,000 |  |  |
Warrants exercised, shares |  |  |  |  |  |  |  |  | 2,147,000 | 14,215,000 | 24,000
Conversion of convertible preferred stock to common shares, number of shares |  |  |  |  |  |  |  |  | 18,872,000 |  | 2,629,000
6.5% Mandatory Convertible Preferred Stock dividends paid in common stock, shares |  |  |  |  |  |  |  |  |  | 3,886,000 |
Common stock issued for assets purchased, shares |  |  |  |  |  |  |  |  | 5,396,000 |  |

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