Quarterly report pursuant to Section 13 or 15(d)

Concentration of Credit Risk (Details)

Concentration of Credit Risk (Details) - Credit Concentration Risk [Member]
6 Months Ended
Jun. 30, 2021
USD ($)
Concentration Risk [Line Items]  
Cash and cash equivalents insured by the Federal Deposit Insurance Corporation $ 250,000
Concentration risk, description SIPC protects clients against the custodial risk of a member investment firm becoming insolvent by replacing missing securities and cash up to $500,000, including up to $250,000 in cash, per client in accordance with SIPC rules.
First Mortgage Liens On Real Property  
Concentration Risk [Line Items]  
Threshold Used For Calculating Concentration Of Risk 66.75%