Transactions with Related Parties - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Receivables due from unconsolidated entities	$ 19,000	$ 19,000	$ 53,000
Outstanding liabilities due to related parties	365,000	365,000	$ 344,000
Greystone Select [Member]
Related Party Transaction [Line Items]
Fee paid	0	0
Greystone Affiliate [Member]
Related Party Transaction [Line Items]
Fee paid	$ 0	$ 0
Percentage of referral fee to be received in original principal amount		0.25%

Carrying amount as of the balance sheet date of obligations due all related parties.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details

- Definition

Receivables to be collected from (obligations owed to) related parties, net as of the balance sheet date where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth.

+ References

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+ Details