Subsequent Events - Additional Information (Detail) - USD ($)			6 Months Ended
	Jul. 22, 2020	Aug. 31, 2018	Jun. 30, 2020
Freddie Mac Utah Loans [Member] | Minimum [Member]
Subsequent Event [Line Items]
Non-recourse guaranty expiry threshold liquidity.			$ 4,800,000
Freddie Mac Utah Loans [Member] | Minimum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Non-recourse guaranty expiry threshold liquidity.	$ 3,000,000.0
Courtyard Freddie Mac Mortgage Loan [Member] | Minimum [Member]
Subsequent Event [Line Items]
Non-recourse guaranty expiry threshold liquidity.		$ 6,320,000
Courtyard Freddie Mac Mortgage Loan [Member] | Minimum [Member] | Subsequent Event [Member]
Subsequent Event [Line Items]
Non-recourse guaranty expiry threshold liquidity.	$ 3,000,000.0
Courtyard Freddie Mac Mortgage Loan [Member] | Maximum [Member]
Subsequent Event [Line Items]
Non-recourse guaranty expiry threshold liquidity.		$ 1,500,000