COMMITMENTS AND CONTINGENCIES - Components of Lease Expense - REIT (Details) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Entity Information [Line Items]
Operating lease costs	$ 770	$ 1,538
Finance lease costs - interest	61	122
Total lease costs	831	1,660
ESH REIT
Entity Information [Line Items]
Operating lease costs	327	652
Finance lease costs - interest	61	122
Total lease costs	$ 388	$ 774