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Consolidated Statements Of Shareholders' Equity (Parenthetical) (USD $) | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Consolidated Statements Of Shareholders' Equity [Abstract] |  |  |
Series A preferred stock cash dividend, per share | $ 1.00 | $ 1.00 | $ 1.00

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- Definition Aggregate dividends paid during the period for each share of preferred stock outstanding. + References No definition available. + Details
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- Details
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