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Leases - Additional information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Sep. 30, 2019
Sep. 30, 2019
Lessee, Lease, Description [Line Items]        
Operating lease option to extend 10 years   10 years 10 years
Finance lease option to extend 10 years   10 years 10 years
Assets recorded under finance leases $ 500,000 $ 600,000 $ 500,000 $ 500,000
Accumulated depreciation associated with finance leases $ 200,000 $ 200,000 $ 25,530 $ 76,019
Minimum        
Lessee, Lease, Description [Line Items]        
Remaining lease terms, operating 1 month   1 month 1 month
Remaining lease terms, finance 1 month   1 month 1 month
Maximum        
Lessee, Lease, Description [Line Items]        
Remaining lease terms, operating 5 years   5 years 5 years
Remaining lease terms, finance 5 years   5 years 5 years