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Summary of Significant Accounting Policies (Income Taxes) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Entity Information [Line Items] |  |  |
Assets with foreclosure elections | $ 749,200 |  |
Operating loss carryforwards |  | $ 856,400 |
Total income tax (expense) benefit | (7,639) | (3,912) | $ 659
Taxable REIT Subsidiaries |  |  |
Entity Information [Line Items] |  |  |
Operating loss carryforwards | 3,200 | 4,100 |
Assets owned taxable subsidiaries | 516,900 |  |
Current tax (expense) benefit | (7,639) | (3,912) | 659
Deferred tax (expense) benefit | 0 | 0 | 0
Total income tax (expense) benefit | (7,639) | (3,912) | 659
Income of subsidiaries | 17,000 | 19,300 | (1,800)
Income taxes paid | 8,400 | 1,300 | $ 9,200
Deferred tax assets | 53,910 | 54,318 |
Valuation allowance | (53,910) | (54,318) |
Net deferred tax assets (liabilities) | 0 | 0 |
Real estate asset basis differences | 40,000 | 45,200 |
Deferred expenses and other items | $ 10,700 | $ 5,000 |

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- Definition Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Tax Expense (or Benefit) -URI http://asc.fasb.org/extlink&oid=6509736 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I.7) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 + Details
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