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v3.20.2

Related Party Transactions (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) ft² property | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) ft² property | Sep. 30, 2019 USD ($)
Related Party Transaction [Line Items] |  |  |  |
Area of real estate property (in square feet) | ft² | 10,100,000 |  | 10,100,000 |
Affliliated entity | Supervisory fee revenue |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenue from related parties | $ 0.2 | $ 0.2 | $ 0.7 | $ 0.7
Affliliated entity | Property management fee revenue |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenue from related parties | 0.1 | 0.1 | 0.2 | 0.2
Affliliated entity | Leased space rental |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Revenue from related parties | $ 0.1 | $ 0.1 | $ 0.2 | $ 0.2
Number of properties | property | 1 |  | 1 |
Lease cancellation, notice period (in days) |  |  | 90 days |
Undivided Interest |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Area of real estate property (in square feet) | ft² | 5,447 |  | 5,447 |
Chairman emeritus | Leased space rental |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Percentage of lease space occupied by Chairman emeritus and employee |  |  | 15.00% |

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- Definition Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-07.1(c)) -URI http://asc.fasb.org/extlink&oid=120401555&loc=SL114874292-224272 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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