Leases - Summary of Rent 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 costs	$ 8,557	$ 9,605	$ 26,004	$ 28,375
Short-term lease costs	91	276	327	1,149
Variable lease costs	13	1	32	2
Total rent expense	$ 8,661	$ 9,882	$ 26,363	$ 29,526