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Leases Current and Noncurrent Lease Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease, liability, current $ 1,068 $ 1,048
Operating lease, liability, noncurrent 2,601 3,454
Operating lease, liabilities $ 3,669 $ 4,502