Governmental Issuer Loans - Additional Information (Details) - Governmental Issuer Loans [Member] $ in Millions	Jan. 31, 2021 USD ($)
Legacy Commons at Signal Hills [Member]
Governmental Issuer Loans [Line Items]
Loans commitment	$ 34.6
Hilltop at Signal Hills [Member]
Governmental Issuer Loans [Line Items]
Loans commitment	24.5
Hope on Avalon [Member]
Governmental Issuer Loans [Line Items]
Loans commitment	23.4
Hope on Broadway [Member]
Governmental Issuer Loans [Line Items]
Loans commitment	$ 12.1