Debt Financing - Summary of Mizuho TOB Trust Financings (Details) - USD ($)		3 Months Ended
		Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt financing		$ 711,788,901	$ 673,957,640
TOB Trust [Member] | Mizuho Capital Markets [Member]
Debt Instrument [Line Items]
Debt financing		24,207,000
TOB Trust [Member] | Mizuho Capital Markets [Member] | TOB Trust 2021-XF2926 [Member]
Debt Instrument [Line Items]
Debt financing	[1]	$ 16,190,000
Stated Maturities	[1]	2024-01
Reset Frequency	[1]	Weekly
Variable Rate Index	[1]	OBFR
Facility Fees	[1]	0.89%
TOB Trust [Member] | Mizuho Capital Markets [Member] | Hope on Avalon [Member]
Debt Instrument [Line Items]
Debt financing		$ 5,064,000
Stated Maturities		2023-02
Reset Frequency		Weekly
Variable Rate Index		SIFMA
Facility Fees		1.42%
TOB Trust [Member] | Mizuho Capital Markets [Member] | Hope on Broadway [Member]
Debt Instrument [Line Items]
Debt financing		$ 2,953,000
Stated Maturities		2023-02
Reset Frequency		Weekly
Variable Rate Index		SIFMA
Facility Fees		1.42%

[1] ^{The TOB Trust is securitized by the Legacy Commons at Signal Hills GIL and property loan, Hilltop at Signal Hills GIL and property loan, Oasis at Twin Lakes property loan and Hope on Avalon taxable GIL.}