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Leases - Narrative (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Lessee, Lease, Description [Line Items]      
Renewal term (in years)   3 years  
Right of use asset $ 13,044   $ 8,246
Lease liability $ 14,676    
McCook      
Lessee, Lease, Description [Line Items]      
Right of use asset   $ 5,300  
Lease liability   $ 5,300