Commitments and Contingencies - REIT - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2019 Hotel	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Commitment And Contingencies [Line Items]
Number of ground leased hotel properties	5
Hotel site for which development is in process	1
Termination period of ground lease agreements, Start	2023
Termination period of ground lease agreements, End	2096
Lease renewal term	5 years
Rent expense on office and ground leases | $		$ 3.2	$ 3.2
Minimum
Commitment And Contingencies [Line Items]
Lease renewal term	5 years
Maximum
Commitment And Contingencies [Line Items]
Lease renewal term	10 years
ESH Hospitality, Inc.
Commitment And Contingencies [Line Items]
Number of ground leased hotel properties	5
Hotel site for which development is in process	1
Termination period of ground lease agreements, Start	2023
Termination period of ground lease agreements, End	2096
Rent expense on office and ground leases | $		$ 1.5	$ 1.5
ESH Hospitality, Inc. | Minimum
Commitment And Contingencies [Line Items]
Lease renewal term	5 years
ESH Hospitality, Inc. | Maximum
Commitment And Contingencies [Line Items]
Lease renewal term	10 years