Other Assets - Additional Information (Detail) $ in Millions		3 Months Ended	12 Months Ended
	May 30, 2018 USD ($)	Mar. 31, 2019 USD ($) Hotel	Dec. 31, 2018 USD ($) Hotel
Other Assets [Line Items]
Number of hotels classified as assets held for sale | Hotel		1	1
CMBS Loan Agreement [Member]
Other Assets [Line Items]
Aggregate notional amount	$ 1,035.0
LIBOR floor percentage	3.25%
Interest rate swap agreement expiration date	Jul. 15, 2020
Net carrying amount of interest rate cap			$ 0.2
CMBS Loan Agreement [Member] | Maximum [Member]
Other Assets [Line Items]
Net carrying amount of interest rate cap		$ 0.1