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Acquisitions, Dispositions and Other Significant Transactions - Ventas Lease Portfolio Restructuring (Details) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Apr. 30, 2018 | Sep. 30, 2019 USD ($) lease | Jun. 30, 2019 USD ($) community | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) lease community | Sep. 30, 2018 USD ($) | Apr. 01, 2018 community
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of communities leased | lease |  | 244 |  |  | 244 |  |
Loss on facility lease termination and modification, net | $ |  | $ 0 |  | $ (2,337) | $ (2,006) | $ (148,804) |
Ventas, Inc | Master Lease And Security Agreement |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of communities leased | community |  |  |  |  |  |  | 128
Management percent fee | 5.00% |  |  |  |  |  |
Loss on facility lease termination and modification, net | $ |  |  |  | $ 125,700 |  |  |
Number of communities exercised to market for sale | community |  |  |  |  | 28 |  |
Option to terminate, rent reduction percentage |  |  |  |  |  |  | 6.25%
Number of communities exercised to market for sale and sold | community |  |  | 5 |  |  |  |
Reduction of rent for terminating communities | $ |  |  | $ 1,500 |  |  |  |

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- Definition Amount of gain (loss) on termination of lease before expiration of lease term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77888415&loc=SL77918607-209975 + Details
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