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Derivative Instruments (Schedule of Derivative Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Jan. 01, 2018
Derivative [Line Items]
Cumulative effect adjustment	$ 0		$ 0
Designated as Hedging Instrument \| Interest Rate Swap
Derivative [Line Items]
Fair value of interest rate swap	8,328		8,328		$ 6,387
Change in fair value effective portion			1,900		700
Change in fair value					1,400
Amortization of accumulated other comprehensive income					(300)
Gain (loss) on fair value hedges			7,078		5,992
Designated as Hedging Instrument \| Interest Rate Swap \| Other Nonoperating Income (Expense)
Derivative [Line Items]
Gain (loss) on fair value hedges	0	$ 104	0	$ 356
Designated as Hedging Instrument \| Interest Rate Swap \| Interest (income) expense, net
Derivative [Line Items]
Gain (loss) on fair value hedges	(803)	(66)	(1,888)	807
ESH REIT
Derivative [Line Items]
Cumulative effect adjustment	0		0
ESH REIT \| Designated as Hedging Instrument \| Interest Rate Swap
Derivative [Line Items]
Fair value of interest rate swap	8,328		8,328		6,387
Change in fair value effective portion			1,900		700
Amortization of accumulated other comprehensive income					(300)
Gain (loss) on fair value hedges			8,327		$ 7,038
ESH REIT \| Designated as Hedging Instrument \| Interest Rate Swap \| Other Nonoperating Income (Expense)
Derivative [Line Items]
Gain (loss) on fair value hedges	0	104	0	356
ESH REIT \| Designated as Hedging Instrument \| Interest Rate Swap \| Interest (income) expense, net
Derivative [Line Items]
Gain (loss) on fair value hedges	(803)	$ (66)	(1,888)	$ 807
Accumulated Other Comprehensive (Loss) Income
Derivative [Line Items]
Cumulative effect adjustment	(377)		(377)
Accumulated Other Comprehensive (Loss) Income \| ESH REIT
Derivative [Line Items]
Cumulative effect adjustment	(664)		(664)
Accumulated Other Comprehensive (Loss) Income \| Accounting Standards Update 2017-12
Derivative [Line Items]
Cumulative effect adjustment	$ (700)		$ (700)			$ 700
Accumulated Other Comprehensive (Loss) Income \| Accounting Standards Update 2017-12 \| ESH REIT
Derivative [Line Items]
Cumulative effect adjustment						$ 700