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Operating Leases - Operating Leases Amount Recognized (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Operating Leases, Rent Expense $ 437 $ 615
Long Term Operating Lease [Member]    
Operating Leases, Rent Expense 388 443
Short Term Operating Lease [Member]    
Operating Leases, Rent Expense $ 49 $ 172