Business Combinations and Acquisition and Disposition of Hotel Properties - Disposition of Hotel Properties (Details) - USD ($)			3 Months Ended
	Feb. 22, 2019	Feb. 14, 2019	Mar. 31, 2019	Mar. 31, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales of hotel properties			$ 245,096,000	$ 0
Operating (loss) income from disposed properties			$ (100,000)	$ 900,000
Hotel Palomar Washington DC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales of hotel properties	$ 141,500,000
Gain (loss) on sale of hotel properties	$ 0
The Liaison Capitol Hill
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sales of hotel properties		$ 111,000,000
Gain (loss) on sale of hotel properties		$ 0