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Summary Of Significant Accounting Policies Fair Value of Debt (Level 3) (Details) - Measurement Input, Discount Rate [Member]
Sep. 30, 2021
Mortgage Notes [Member] | Minimum [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Debt Instrument, Measurement Input 0.0250
Mortgage Notes [Member] | Maximum [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Debt Instrument, Measurement Input 0.0475
Mortgage Notes [Member] | Weighted Average [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Debt Instrument, Measurement Input 0.0296
Related Party Note Receivable [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Debt Instrument, Measurement Input 0.0358
Related Party Note Receivable [Member] | Weighted Average [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Debt Instrument, Measurement Input 0.0358
Notes Receivables [Member] | Minimum [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Debt Instrument, Measurement Input 0.0354
Notes Receivables [Member] | Maximum [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Debt Instrument, Measurement Input 0.0800
Notes Receivables [Member] | Weighted Average [Member]  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]  
Debt Instrument, Measurement Input 0.0578