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Relationship with Managers - Footnotes (Details) - USD ($) |  |  |  |  |  | 1 Months Ended | 6 Months Ended | 12 Months Ended
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Sep. 01, 2017 | Jul. 01, 2017 | Jan. 01, 2017 | May 19, 2016 | Apr. 30, 2016 | May 31, 2021 | May 31, 2018 | Sep. 30, 2016 | Jul. 31, 2016 | May 31, 2016 | Jun. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Highgate Hotels |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%
Bethesda Marriott Suites | Marriott |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00%
FF&E reserve contributions as a percentage of gross revenue, contribution percentage reduced (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00%
Operating profits exceeds owner's priority |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,900,000
Chicago Marriott Downtown | Marriott |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 18.00%
Operating profits exceeds owner's priority |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0
Calculated as net operating income before incentive management fees (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 18.00%
Courtyard Denver Downtown | Sage Hospitality |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00%
Base management fee as a percent of gross revenue |  |  |  |  |  |  |  |  | 1.50% |  |  |  |  |
Base management fee as a percent of gross operating profit |  |  |  |  |  |  |  |  | 1.50% |  |  |  |  |
Hilton Burlington | Interstate Hotels and Resorts |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00%
Property management fee percent fee of gross revenue, capped percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.50%
JW Marriot Denver at Cherry Creek | Sage Hospitality |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00%
Base management fee (as a percent) |  |  |  | 2.50% |  |  |  |  |  |  |  |  |  |
Renaissance Charleston | Marriott |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%
Additional base management fee (as a percent) |  |  |  |  |  |  |  | 3.00% |  |  |  |  |  |
Salt Lake City Marriott Downtown | Marriott |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00%
Base management fee reduction (as a percent) |  |  |  |  | 3.00% |  |  |  |  | 1.50% |  |  |  |
Westin Fort Lauderdale Beach Resort | HEI Hotels and Resorts |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Incentive management fee (as a percentage of operating profit) |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.00%
Scenario, Forecast | The Gwen Chicago | HEI Hotels and Resorts |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base management fee (as a percent) |  |  |  |  |  |  |  |  |  |  |  | 2.25% | 2.00% |
Scenario, Forecast | Lexington Hotel New York | Highgate Hotels |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional base management fee (as a percent) |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |
Base management fee reduction (as a percent) |  |  |  |  |  |  |  |  |  |  | 2.00% |  |  |
Scenario, Forecast | Renaissance Charleston | Marriott |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional base management fee (as a percent) | 3.50% |  |  |  |  |  |  |  |  |  |  |  |  |
Scenario, Forecast | Salt Lake City Marriott Downtown | Marriott |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional base management fee (as a percent) |  |  |  |  |  | 3.00% | 2.00% |  |  |  |  |  |  |
Scenario, Forecast | Westin Fort Lauderdale Beach Resort | HEI Hotels and Resorts |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real Estate Properties [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Base management fee (as a percent) |  |  | 2.00% |  |  |  |  |  |  |  |  |  |  |

X
- Definition The specified level of return on invested capital (referred to as the owner's priority) which must be exceeded before the furniture, fixtures and equipment reserve contribution percentage reverts to contractual levels. + References No definition available. + Details
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- Definition Base Management Fee Of Two Point Five Percentage of Gross Operating Profit + References No definition available. + Details
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- Definition The percentage to which the furniture, fixtures and equipment reserve contribution percentage is reduced until a specified level of return on invested capital (referred to as the owner's priority) is achieved by the reporting entity. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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