Equity Investments, at Fair Value - Narrative (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Schedule of Equity Method Investments [Line Items]
Income from equity investments	$ 8,100,000	$ 10,607,000	$ 14,153,000	$ 14,006,000
Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Income from equity investments	300,000	800,000	400,000	900,000
Multi-Family Preferred Equity Ownership Interests
Schedule of Equity Method Investments [Line Items]
Other income	$ 700,000	$ 0	$ 1,500,000	$ 0

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

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