XML 78 R64.htm IDEA: XBRL DOCUMENT v3.20.4
Commitment and Contingencies - Additional Information (Details) - USD ($)
 1 Months Ended 12 Months Ended
Jan. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2019
Loss Contingencies [Line Items]        
Per incident policy limit   $ 100,000    
Quota share of tenant liability insurance provided, percent   100.00%    
Estimate of possible loss     $ 4,300,000  
Loss contingency accrual   $ 4,300,000    
Subsequent event        
Loss Contingencies [Line Items]        
Ultimate settlement amount $ 4,300,000      
Other current liabilities        
Loss Contingencies [Line Items]        
Liability for reported claims and claims incurred but not reported   1,500,000   $ 1,800,000
Other current assets        
Loss Contingencies [Line Items]        
Deposits held with a third party related to insurance services collateral   $ 2,700,000   $ 1,300,000