RELATED PARTY TRANSACTIONS - Additional Information - REIT (Detail) shares in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) lease shares	Mar. 31, 2019 USD ($) shares	Dec. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Common distributions	$ 16,177,000	$ 13,334,000
ESH Hospitality, Inc.
Related Party Transaction [Line Items]
Number of leases | lease	3
Term of lease	5 years
Lease renewal term			5 years
Termination period	30 months
Expenses from related party	$ 2,900,000	2,500,000
Common distributions	60,291,000	66,137,000
Issuance of Class B common stock related to issuance of Paired Shares	737,000	1,213,000
ESH Hospitality, Inc. | Class A common stock
Related Party Transaction [Line Items]
Common distributions	35,100,000	37,600,000
ESH Hospitality, Inc. | Class B common stock
Related Party Transaction [Line Items]
Issuance of Class B common stock related to issuance of Paired Shares	$ 700,000	$ 1,200,000
Stock issued (shares) | shares	200	200
Restricted stock, granted (shares) | shares	1,100
Shares expected to be issued (shares) | shares	1,100
ESH Hospitality, Inc. | Line of Credit | Unsecured Intercompany Facility
Related Party Transaction [Line Items]
Carrying amount, unsecured intercompany facility	$ 0		$ 0
ESH Hospitality, Inc. | Equity Based Awards | Corporation
Related Party Transaction [Line Items]
Total equity-based compensation	200,000	$ 300,000
ESH Hospitality, Inc. | Line of Credit | Unsecured Debt | Unsecured Intercompany Facility
Related Party Transaction [Line Items]
Interest expense, related party	0	$ 0
Line of credit maximum additional principal available	$ 300,000,000.0
Performance Based Awards | ESH Hospitality, Inc.
Related Party Transaction [Line Items]
Percentage of award vest	100.00%