SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - REIT - Additional Information (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019
Summary Of Significant Accounting Policies [Line Items]
Right of use asset	$ 5,988
Operating lease liability	13,574
Finance lease asset	3,979	$ 3,800
Finance lease liabilities	$ 3,440	3,400
Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of asset (years)	2 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of asset (years)	49 years
ESH REIT
Summary Of Significant Accounting Policies [Line Items]
Right of use asset	$ 2,435
Operating lease liability	9,261
Finance lease asset	3,979	3,800
Finance lease liabilities	$ 3,440	3,400
ESH REIT | Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of asset (years)	2 years
ESH REIT | Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful life of asset (years)	49 years
ASU 2016-02
Summary Of Significant Accounting Policies [Line Items]
Right of use asset		7,100
Operating lease liability		14,500
ASU 2016-02 | ESH REIT
Summary Of Significant Accounting Policies [Line Items]
Right of use asset		2,800
Operating lease liability		$ 9,300