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Commitments - Additional Information (Details)
Sep. 30, 2020
Dec. 31, 2019
Jun. 30, 2018
Leases      
Leases, term of contract (in years)     5 years
Finance Lease, Liability, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilities us-gaap:OtherLiabilities  
Interest rate (as a percent) 7.60%    
Minimum      
Leases      
Leases, term of contract (in years) 1 year    
Maximum      
Leases      
Leases, term of contract (in years) 5 years