XML 162 R87.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Debt - Retail Property Term Loan (Details) - Retail Property Term Loan
Mar. 29, 2019
USD ($)
retail_property
Dec. 31, 2019
Debt Instrument [Line Items]    
Retail properties with mortgage liens | retail_property 21  
Term Loan    
Debt Instrument [Line Items]    
Debt instrument, face amount | $ $ 45,000,000.0  
Debt covenant, loan-to-appraisal value of portfolio properties, ratio 75.00%  
Debt covenant, minimum annual debt yield 9.00%  
Effective percentage   3.80%
Debt instrument, term 20 years  
Term Loan | London Interbank Offered Rate (LIBOR)    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.50%