Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies Commitments and Contingencies (Details)

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Commitments and Contingencies Commitments and Contingencies (Details) - USD ($)
3 Months Ended
Dec. 15, 2020
Mar. 31, 2021
Mar. 31, 2020
Sep. 01, 2011
Loss Contingencies [Line Items]        
Loss contingency, amount of damages sought $ 400,000      
Grove Economic Development Authority Tax Increment Revenue Note | Harbor Pointe Associates, LLC | Notes Payable, Other Payables | Guarantor Subsidiaries | Grove Economic Development Authority        
Loss Contingencies [Line Items]        
Debt issued       $ 2,420,000
Number of semi-annual payment installments       50
Guarantor obligations, maximum exposure amount       $ 2,180,000
Guarantor Obligations, Amount Funded   $ 44,000 $ 0  
Amounts accrued for guarantor obligations   $ 0    
Minimum | Grove Economic Development Authority Tax Increment Revenue Note | Harbor Pointe Associates, LLC | Notes Payable, Other Payables | Guarantor Subsidiaries | Grove Economic Development Authority        
Loss Contingencies [Line Items]        
Interest Rate       2.29%
Maximum | Grove Economic Development Authority Tax Increment Revenue Note | Harbor Pointe Associates, LLC | Notes Payable, Other Payables | Guarantor Subsidiaries | Grove Economic Development Authority        
Loss Contingencies [Line Items]        
Interest Rate       14.00%
Northeast        
Loss Contingencies [Line Items]        
Percentage accounted by properties of its annualized base rent   61.00%    
Mid Atlantic        
Loss Contingencies [Line Items]        
Percentage accounted by properties of its annualized base rent   35.00%    
Southeast        
Loss Contingencies [Line Items]        
Percentage accounted by properties of its annualized base rent   4.00%