Leases - Right-of-Use Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Jan. 01, 2020
Leases [Abstract]
Right of use asset in other non-current assets	$ 7,846	$ 316	$ 550
Other current liabilities	1,146	254
Other non-current liabilities	7,565	72
Total lease liability	$ 8,711	$ 326	$ 560