DERIVATIVE INSTRUMENTS - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2016
Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative notional amount	$ 150,000,000.0		$ 150,000,000.0
Reduction of outstanding derivative amount			50,000,000.0
Interest rate cash flow hedge gain, net of tax			(996,000)		$ 706,000
Gain to be reclassified to earnings in next twelve months			1,000,000.0
Designated as Hedging Instrument | Interest Rate Swap | Interest expense (income), net
Derivative [Line Items]
Interest rate cash flow hedge gain, net of tax	(250,000)	$ 821,000	7,000	$ 1,797,000
Designated as Hedging Instrument | Interest Rate Swap | Interest expense (income), net | Maximum
Derivative [Line Items]
Interest rate cash flow hedge gain, net of tax			100,000
ESH REIT | Designated as Hedging Instrument | Interest Rate Swap
Derivative [Line Items]
Derivative notional amount	$ 150,000,000.0		$ 150,000,000.0		$ 200,000,000.0
Term Loan Facility | Medium-term Notes | ESH REIT Term Facility | ESH REIT
Derivative [Line Items]
Derivative rate (as a percent)						1.175%