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Fair Value Measurements (Details 1) - Level 3 - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Convertible preferred securities (a) |  |  |
Reconciliation of Fair Value Measurements Using Level 3 |  |  |
Asset (liability), Beginning Balance | $ 7,388 | $ 3,294 |
Gains (losses) included in earnings | 0 | 0 |
Asset (liability), Ending Balance | 7,388 | 3,294 |
Convertible preferred securities (a) | Implied based on market prices |  |  |
Quantitative Information about Level 3 Fair Value Measurements |  |  |
Convertible preferred securities (a) | 7,388 | $ 3,294 | $ 7,388
Real Property | Third-Party Appraisal |  |  |
Quantitative Information about Level 3 Fair Value Measurements |  |  |
Real Property (b) | $ 29,347 |  | $ 29,347

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- Definition Amount of gain (loss) recognized in the income statement of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258 + Details
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