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Investments in Unconsolidated Joint Ventures - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended				9 Months Ended
	Aug. 31, 2020 USD ($)	Sep. 30, 2020 USD ($) joint_venture	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) joint_venture	Sep. 30, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Ownership percentage		20.00%				20.00%
Number of joint ventures | joint_venture		3				3
Joint Venture
Schedule of Equity Method Investments [Line Items]
Maximum borrowing limit	$ 201.0
Non-recourse guarantee, term	two-year
Maximum exposure		$ 85.2				$ 85.2
Joint Venture | LIBOR
Schedule of Equity Method Investments [Line Items]
Basis spread on variable rate	3.50%
Property management expenses | Joint Venture
Schedule of Equity Method Investments [Line Items]
Management fee income		$ 1.7			$ 1.0	$ 3.9	$ 2.4
J.P. Morgan JV
Schedule of Equity Method Investments [Line Items]
Ownership percentage		20.00%				20.00%
Size of partnership			$ 625.0	$ 253.1

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