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Leases - Schedule of Operating Lease Right-of-use Assets and Liabilities (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease right-of-use assets, Beginning $ 2,101  
Amortization of operating lease right-of-use assets (173) $ (291)
Addition of operating lease right-of -use asset 71  
Write-off of right-of-use asset due to headquarters lease termination (1,913)  
Write-off of right-of-use asset related to other lease terminations (50)  
Operating lease right-of-use assets, Ending 36 2,101
Operating lease liabilities, Beginning 3,300  
Principal payments on operating lease liabilities (165)  
Addition of operating lease liability 71  
Write-off of lease liability related to headquarters lease termination (3,135)  
Write-off of lease liability related to other lease terminations (35)  
Operating lease liabilities, Ending 36 3,300
Less non-current portion (2,891)
Current portion $ 36 $ 409