Debt - Deferred Financing Costs, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Financing costs	$ 28,814		$ 28,814		$ 25,315
Less: accumulated amortization	(16,848)		(16,848)		(13,863)
Total deferred financing costs, net	11,966		11,966		11,452
Amortization expense related to deferred financing costs	1,000	$ 900	3,000	$ 2,900
Revolving credit facility | Unsecured revolving credit facility
Debt Instrument [Line Items]
Net deferred financing costs	$ 2,700		$ 2,700		$ 4,200