Leases - Summary of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Lease Cost
Operating lease cost	$ 3,586	$ 1,915	$ 7,465	$ 5,715
Finance lease cost:
Amortization of right-of-use assets	776	734	2,283	2,050
Interest on lease liabilities	376	380	1,120	1,135
Variable lease cost	1,601	1,342	4,427	4,058
Total lease costs	$ 6,339	$ 4,371	$ 15,295	$ 12,958
Weighted Average Remaining Lease Term
Operating leases	13 years 4 months 24 days	9 years 3 months 18 days	13 years 4 months 24 days	9 years 3 months 18 days
Finance leases	12 years 6 months	13 years 8 months 12 days	12 years 6 months	13 years 8 months 12 days
Weighted Average Discount Rate
Operating leases	4.94%	6.16%	4.94%	6.16%
Finance leases	5.31%	5.36%	5.31%	5.36%