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Investments in Unconsolidated Joint Ventures - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($) joint_venture	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)
Schedule of Equity Method Investments [Line Items]
Ownership percentage	20.00%
Number of joint ventures | joint_venture	3
Joint Venture
Schedule of Equity Method Investments [Line Items]
Maximum borrowing limit		$ 201.0
Non-recourse guarantee, term		two-year
Maximum exposure	$ 116.7
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	$ 2.1		$ 0.9

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