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Impact of COVID-19 (Details)
$ in Millions
 3 Months Ended 9 Months Ended 11 Months Ended
Dec. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Jan. 31, 2021
tenant
Subsequent Event [Line Items]      
Percent of tenants reopened (more than) 98.00% 98.00%  
Rent billings collected (as a percent) 95.00% 92.00%  
Amount of rent deferred | $ $ 6.1 $ 6.1  
Subsequent Event      
Subsequent Event [Line Items]      
Rent deferral agreement, number of tenants | tenant     375