Intangible Assets and Goodwill - Additional Information (Detail) $ in Millions	9 Months Ended
	Sep. 30, 2017 USD ($) Hotel	May 01, 2017 Hotel
Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period remaining for definite-lived intangible assets (years)	13 years
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Finite-Lived Intangible Assets [Line Items]
Write off of goodwill | $	$ 4.6
Hotel properties | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Finite-Lived Intangible Assets [Line Items]
Number of hotel properties	4	3
Hotel properties | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Extended Stay Canada
Finite-Lived Intangible Assets [Line Items]
Number of hotel properties		4