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Income Taxes Reconciliation of Income Tax Attributable to Continuing Operations (Details) - Subsidiary of Common Parent - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Investments, Owned, Federal Income Tax Note |  |  |
Tax expense/(benefit) at U.S. statutory rates on TRS income subject to tax | $ 2,177 | $ 3,185 | $ 2,506
Effect of Permanent Differences and Other | 0 | 0 | (730)
Valuation Allowance Change in Amount | (2,177) | (3,185) | (1,776)
Income tax expense/(benefit) | $ 0 | $ 0 | $ 0

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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to 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),(b) -URI http://asc.fasb.org/extlink&oid=84230637&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 + Details
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