Income Taxes and Distributions (Details Textuals) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Textuals [Line Items]
Income tax provision	$ (19,128)	$ 6,451	$ (1,267)
NOL Carryforwards	$ 418,739
Carryforwards expiration date	Dec. 31, 2035
Tax Valuation Allowance	$ 96,838
Percentage of taxable income to be distributed to stockholders for federal tax purposes	90.00%
Percentage of net capital gains on taxable income distributed to stockholders	100.00%
Percentage of federal excise tax on real estate investment trusts that do not distribute income	4.00%
International [Member]
Income Tax Textuals [Line Items]
Income tax provision	$ (3,315)	7,385	$ (6,069)
Canada [Member]
Income Tax Textuals [Line Items]
NOL Carryforwards	$ 104,988	$ 78,680
Operating Loss Carryforwards Limitations On Use	These Canadian losses have a 20-year carryforward period.	These Canadian losses have a 20-year carryforward period.
United Kingdom
Income Tax Textuals [Line Items]
NOL Carryforwards	$ 158,156	$ 179,598

Percentage of capital gains excluded from taxable income distributed to shareholders

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Percentage of federal excise tax on real estate investment trusts that do not distribute income.

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Percentage of taxable income to be distributed to stockholders for federal tax purposes.

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Amount of valuation allowance of deferred tax asset attributable to deductible temporary differences and carryforwards, classified as current.

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-Name Accounting Standards Codification
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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Expiration date of each operating loss carryforward included in operating loss carryforward, in CCYY-MM-DD format.

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A description of the limitations on the use of all operating loss carryforwards available to reduce future taxable income.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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