Commitments and Contingencies - Right Of Use Asset and Lease Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease, right of use asset	$ 16,090	$ 11,195
Lease liabilities	1,243	1,023
Lease liabilities, non-current	16,443	11,533
Operating Lease, Liability	$ 17,686	$ 12,556