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Earnings per share (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income (loss) (numerator):
Loss from continuing operations	$ (6,935)	$ (6,879)
Income from discontinued operations		22
Noncontrolling interest	3,620	895
Dividends on preferred shares	3,121
Net loss attributable to common shareholders	$ (13,676)	$ (7,752)
Weighted-average shares (denominator)	185,504,294	48,233,982
Net loss per share- basic and diluted:
Loss from continuing operations (in dollars per share)	$ (0.07)	$ (0.16)
Net loss attributable to common shareholders per share - basic and diluted (in dollars per share)	$ (0.07)	$ (0.16)

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- Definition

The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or 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.

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Amount of Income (Loss) attributable to the noncontrolling interest.

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Amount of income (loss) from continuing operations attributable to the parent. Also defined as revenue less expenses and taxes from ongoing operations before extraordinary items but after deduction of those portions of income or loss from continuing operations that are allocable to noncontrolling interests.

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The amount of net income (loss) from continuing operations per each basic and diluted share of common stock or unit when the per share amount is the same for both basic and diluted shares.

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Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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