Organization and Basis of Presentation - Summary of Hotels Owned, Franchised, and Number of Associated Rooms (Parenthetical) (Detail) - Hotel	3 Months Ended			12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Sep. 30, 2015	Dec. 31, 2016
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of hotels held for sale	3	14	13	5