Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Operating lease cost	$ 952	$ 1,335	$ 3,301	$ 4,024
Short-term lease cost	382	252	1,146	752
Total net lease cost	$ 1,334	$ 1,587	$ 4,447	$ 4,776