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Leases - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 21 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
Leases [Line Items]              
Lessor, operating lease options to renew     true        
Operating lease expense $ 2,009 $ 755 $ 6,877 $ 3,057      
Lease receivable 10,558   10,558   $ 10,558 $ 11,045 $ 33,500
Real estate income 2,815 $ 2,883 8,374 $ 8,514      
Elma, Building              
Leases [Line Items]              
Lease receivable $ 10,558   10,558   $ 10,558    
Real estate income     2,077        
Olympia Building              
Leases [Line Items]              
Real estate income     $ 6,297        
Minimum              
Leases [Line Items]              
Lessee incremental borrowing rate percentage         10.25%    
Maximum              
Leases [Line Items]              
Lessee incremental borrowing rate percentage         17.00%