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Leases - Narrative (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
USD ($)
Sep. 30, 2019
USD ($)
Sep. 30, 2020
USD ($)
contract
Sep. 30, 2019
USD ($)
Lessee, Lease, Description [Line Items]        
Lease expense $ 137 $ 137 $ 412 $ 412
Cash paid for amounts included in measurement of lease liabilities for operating leases     $ 390 $ 375
Minimum        
Lessee, Lease, Description [Line Items]        
Renewal term 3 years   3 years  
Maximum        
Lessee, Lease, Description [Line Items]        
Renewal term 5 years   5 years  
Land        
Lessee, Lease, Description [Line Items]        
Number of contracts | contract     6