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Debt - Unsecured Term Loan (Details)		3 Months Ended		6 Months Ended
	Apr. 26, 2017 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)
Line Of Credit Facility Covenant Actual Results
Debt Instrument [Line Items]
Maximum leverage ratio (as a percent)		0.250		0.250
Unsecured Term Loan | Less than or equal to 35% | Maximum
Debt Instrument [Line Items]
Ratio Of Net Indebtedness to Ebitda				0.35
Unsecured Term Loan | Greater than 35% but less than or equal to 45% | Minimum
Debt Instrument [Line Items]
Ratio Of Net Indebtedness to Ebitda				0.35
Unsecured Term Loan | Greater than 35% but less than or equal to 45% | Maximum
Debt Instrument [Line Items]
Ratio Of Net Indebtedness to Ebitda				0.45
Unsecured Term Loan | Greater than 45% but less than or equal to 50% | Minimum
Debt Instrument [Line Items]
Ratio Of Net Indebtedness to Ebitda				0.45
Unsecured Term Loan | Greater than 45% but less than or equal to 50% | Maximum
Debt Instrument [Line Items]
Ratio Of Net Indebtedness to Ebitda				0.5
Unsecured Term Loan | Greater than 50% but less than or equal to 55% | Minimum
Debt Instrument [Line Items]
Ratio Of Net Indebtedness to Ebitda				0.5
Unsecured Term Loan | Greater than 50% but less than or equal to 55% | Maximum
Debt Instrument [Line Items]
Ratio Of Net Indebtedness to Ebitda				0.55
Unsecured Term Loan | Greater than 55% | Minimum
Debt Instrument [Line Items]
Ratio Of Net Indebtedness to Ebitda				0.55
Unsecured Term Loan Due May 2021 | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				1.45%
Unsecured Term Loan Due April 2022 | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				1.45%
Term loan | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				145.00%
Interest incurred on the facility		$ 1,500,000	$ 300,000	$ 2,100,000	$ 300,000
Term loan | LIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate				145.00%
Term loan | LIBOR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate				220.00%
Term loan | LIBOR | Less than or equal to 35%
Debt Instrument [Line Items]
Basis spread on variable rate				1.45%
Term loan | LIBOR | Greater than 35% but less than or equal to 45%
Debt Instrument [Line Items]
Basis spread on variable rate				1.60%
Term loan | LIBOR | Greater than 45% but less than or equal to 50%
Debt Instrument [Line Items]
Basis spread on variable rate				1.75%
Term loan | LIBOR | Greater than 50% but less than or equal to 55%
Debt Instrument [Line Items]
Basis spread on variable rate				1.95%
Term loan | LIBOR | Greater than 55%
Debt Instrument [Line Items]
Basis spread on variable rate				2.20%
Term loan | Unsecured Term Loan | LIBOR | Minimum
Debt Instrument [Line Items]
Basis spread on variable rate				1.45%
Term loan | Unsecured Term Loan | LIBOR | Maximum
Debt Instrument [Line Items]
Basis spread on variable rate				2.20%
Term loan | Unsecured Term Loan Due May 2021
Debt Instrument [Line Items]
Debt instrument, term (in years)				5 years
Outstanding principal balance		$ 100,000,000		$ 100,000,000
Term loan | Unsecured Term Loan Due April 2022
Debt Instrument [Line Items]
Debt instrument, term (in years)	5 years
Outstanding principal balance	$ 200,000,000
Mortgages | Lexington Hotel New York
Debt Instrument [Line Items]
Extinguishment of debt	$ 170,400,000

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

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-Paragraph 2
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-Topic 835
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-Section 50
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