Leases - Lease, Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Leases [Abstract]
Operating lease expense	$ 212	$ 148	$ 427	$ 301
Short-term lease expense	11	15	25	27
Variable lease expense	1	4	2	7
Other	3	5	6	6
Total lease expense	$ 227	$ 172	$ 460	$ 341