Earnings Per Share (Details) (USD $)	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011
Basic earnings per share:
Loss from continuing operations attributable to common shareholders (in dollars per share)	$ (0.07)	$ (0.15)
Income (loss) from discontinued operations (in dollars per share)	$ (0.01)	$ 0.01
Loss per share - basic (in dollars per share)	$ (0.08)	$ (0.14)
Diluted earnings per share:
Loss from continuing operations attributable to common shareholders (in dollars per share)	$ (0.07)	$ (0.15)
Income (loss) from discontinued operations (in dollars per share)	$ (0.01)	$ 0.01
Loss per share - diluted (in dollars per share)	$ (0.08)	$ (0.14)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References+ Details

- Definition

The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period.

+ References

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The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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The amount of net income (loss) derived from discontinued operations during the period, net of related tax effect, per each share of common stock or unit outstanding during the reporting period.

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The amount of net income or loss derived from discontinued operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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