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Related Party Transactions (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Related Party Transaction [Line Items] |  |
Rental revenue | $ 7,481 | $ 10,361
Property operating expenses | 4,028 | 5,832
General and administrative | 2,720 | 3,235
Advisory fee to related party | 3,185 | 2,436
Interest income | 6,782 | 5,644
Interest expense | 6,167 | 7,738
Affiliate |  |
Related Party Transaction [Line Items] |  |
Rental revenue | 256 | 242
Property operating expenses | 117 | 382
General and administrative | 1,390 | 1,670
Interest income | 4,930 | 4,769
Interest expense | 1,505 | 1,395
Affiliate | Pillar and Regis |  |
Related Party Transaction [Line Items] |  |
Rental revenue | 256 | 242
Affiliate | Regis |  |
Related Party Transaction [Line Items] |  |
Property operating expenses | 117 | 382
Affiliate | Pillar |  |
Related Party Transaction [Line Items] |  |
General and administrative | 1,390 | 1,670
Advisory fee to related party | 3,185 | 2,436
Interest expense | 1,505 | 1,395
Affiliate | UHF and Pillar |  |
Related Party Transaction [Line Items] |  |
Interest income | $ 4,930 | $ 4,769
ARL | Affiliate | MRHI |  |
Related Party Transaction [Line Items] |  |
Ownership interest | 90.80% |

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- Definition Amount of expense incurred and directly related to generating revenue by lessor from operating lease of rented property and equipment. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(2)(c)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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- Definition Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919372-209981 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123420820&loc=SL77919311-209978 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 6A -URI http://asc.fasb.org/extlink&oid=124502072&loc=SL77927221-108306 + Details
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