Equity Investments, at Fair Value - Narrative (Details) - USD ($)	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Schedule of Equity Method Investments [Line Items]
Income from equity investments	$ 6,053,000	$ 3,399,000
Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Income from equity investments	100,000	100,000
Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Other income	$ 700,000	$ 0

Amount of income (loss) for proportionate share of equity method investee's income (loss).

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